High Voltage Forum

General Chat => General Chat => Topic started by: Mads Barnkob on November 01, 2017, 03:54:57 PM

Title: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on November 01, 2017, 03:54:57 PM
Welcome  :)

This sticky thread is for all new members to post a short notice about themselves, reasons for joining, dreams on what to learn or help others with, tell a little about your life, job and hobbies. It is a good place to break the ice and make your first post on HVF.net

Please do include links to your website, facebook page, youtube channel or other palces where people can follow your HV activities.

Existing members can greet and ask questions.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on November 01, 2017, 07:48:04 PM
I might aswell start with myself :)

My name is Mads, I live in Odense, Denmark with my girlfriend and our 4 year old daughter.

I work with industrial automation, PLC programming, offshore safety systems and do commissioning travel to customers.

I have been working with electronics and high voltage since 2008, started from scratch with a educational background as electrician.

I run my electronics blog and documentation website www.kaizerpowerelectronics.dk and has a website about insect macro photography at www.disorder.dk/dyr/ and another website about weissbier and port wine at www.disorder.dk

Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Zbig on January 24, 2018, 09:52:09 PM
Hello,
It seems that I'm the second member  :) - or nobody follows forum rulses  ;)
Anyway, My name is Zbigniew or Zbig for short.  I live in Warsaw, Poland with my family. I'm  newbie in Tesla Coil area, but quite experienced electronic engineer and programmer (PC and embedded systems - AVR and ARM).
I've  discovered Tesla coils recently and make some experiments with it, so eventually I;ve found this forum and decided to share my experiments with other enthusiasts.

Zbig.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: DaiKen on January 25, 2018, 10:13:07 AM
Hi all,

My name is Ton DaiKen Akveld, I am from The Netherlands and I have been interested in Tesla coils for quite some time. Decennia ago I studied electronics, medcine and spent most of my working life in IT management. Nowadays I am a zen teacher and just bought a small musical Tesla coil (see attached), which started my appetite to (finally) start building one myself. Currently I am reading a lot on the subject and found the book 'The ULTIMATE Tesla Coil Design and Construction Guide' by Mitch Tilbury which I bought years ago. Hope to learn from and contribute to this forum a lot!

Kind regards,

Ton DaiKen
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on January 25, 2018, 06:38:10 PM
Welcome both Zbig and Ton :)

Thumbs up for spending a few minutes on a introduction, I hope you will study hard, read a lot and ask some good questions so we can crack our brains together :)

Ton, the book you are referring to is about spark gap tesla coils SGTC and that can not be audio modulated like the onetesla kit that you have, that type is called a DRSSTC and I have a unfinished guide on designing such, sorry but it is a long work to write all that: http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/

I also have a few calculators to aid instead of the spreadsheets: http://kaizerpowerelectronics.dk/calculators/mmc-calculator/ and the rest at http://kaizerpowerelectronics.dk/calculators/
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: DaiKen on January 25, 2018, 09:11:31 PM
Thanks for your reply, Mads.
I am aware of the difference between the sg- and (musical) drsstc's. When I bought the book several years ago, not much was known about the dssstc's (to me at least) and I like the math in the book.
I already took a look at your guide and am very pleased with it, so I hope you keep up the good work!

Kind regards.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Laci on January 27, 2018, 09:40:42 PM
I think it's my turn :)
Hello everybody!
I'm not really a new member,just forgot to reply here.Anyways here I am,a 15 years old hungarian boy from Romania.I live in a village with my parents and my brother.I'm learning mathematics and c++ programming in high school.Please excuse if my english is bad,or I say/said something incorrect :)

I'm addicted to elecronics probably since I got electicuted when I was 3 :) I started experimenting with mechanical electric systems,like electromagnets,solenoids and motors.About one and a half year ago I joined to the world of high voltage.The first failed attempts of a sleyer exciter just made more determined to get to a higher level.Over time I spent more and more time with electronics,mainly with tesla coils.
In december,2016 a slayer exciter tesla coil was completed,which produced 2-3cm arcs.I was really happy with it,but other coils on the internet motivated me to make something more mindblowing.This is my actual dream:to make a dual resonant solid state tesla coil!
Sadly,things are going hard,I have very small knowledge about electrical circuits and my experiments usually fail.A pile of semiconductors,like BJTs,MOSFETs,IGBTs,other ICs,a MP4 player and my phone's motherboard give up to work while experimenting.I choose the hard way...
But not just bad things happened.I learnt a lot and had some succesfull projects,which I'm really proud of.

The reason why I registrated here is to ask for help at various problems and to help other people to avoid the same mistaked which I did.


  I wish you all the best!
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: oneKone on January 29, 2018, 03:07:35 AM
Wow.. I can't believe I missed this thread!

I'm Chris from Perth, Australia. For as long as I remembered I've always been fascinated with computers, electronics and mechanics. I've been working as a cnc machinist for 10+ years now. I've designed and built two four stroke engines, built a few gaming PC's but the one thing that always pulls me back in are Tesla coils!

The first one I built had about 10mm discharge.... Small but it was a start! Since then I've learnt quite a bit but have much more to learn. I'm learning quite a bit from this forum, hopefully oneday I'll be able to give sound advice to newcomers of Tesla coils.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Giuliocassano97 on January 31, 2018, 02:19:42 PM
Hello everybody!
My name is Giulio Cassano, from Italy, and I am new in this forum from two days ago under suggestion of Mads, thank you Mads!
 I've finished the school one year ago and now I work as a electrician, I hope is momentaneus job because I want to find the way for me.
Always attracted by electronics, robotics, mechanics and everything that is scientific, I've built a lots of device and I have a good quality to make it work with " poors man" material :')
I don't remember when I discovered tesla coils but it was love at first seen! And I Starts to build prototype with empirical methods and now I have a moderate knowledge about tesla coil but I hope to understand the most possible about it.
Between my hobbies there are also motors..
I'm a superbike freestyle stuntman and motocross rider and I like build off roads prototype cars and Go-Karts, I'll be happy to show it to you if you want :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: TDAF on February 10, 2018, 07:38:00 AM
Hello!!
My name's Anurag
I'm 14 years old
I've built an SSTC and am on my way to building a DRSSTC soon
i've registered on this forum to help me troubleshoot my DRSSTC and gain some help with the other projects i take on in the future
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: AndreiRS on February 12, 2018, 11:52:35 PM
Hi, my name is Andrei. I have been searching about the topics you talk on this forum for some time. Since I was 16 years old maybe, now 28. But I don't work with hv. It was very good that I found this forum on google. Nice forum name by the way, it is the first thing I typed, "high voltage forum". :D Maybe sometimes I will use some weird word in some wrong place, by accident, that is because english is not my first language.

I tried to build a small Tesla coil some years ago, it didn't work. I was using a flyback with low power as primary transformer. Some weeks ago I put together a hv transformer, calculated to put out 13.8kV @ 100mA. The winding has a lot of resistance, so with no load, it may hit 14kV and a bit more. Then of course I decided to build a new Tesla coil. It already worked, very weak. I will get into details on another topic. Thank you.

For some reason my internet provider won't allow me to enter this site. So I'm using the mobile service, hope they fix it soon. When I call them, they know nothing.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on February 13, 2018, 08:16:52 AM
Welcome Giulio, Anurag and Andrei.

I am looking forward to see your projects and help you along the way building/troubleshooting it.

Good that you found a way to the forum Andrei, hopefully you get it fixed with your ISP, don't worry too much about your English, it seems fine for discussing technical issues :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: the_anomaly on April 01, 2018, 02:50:16 PM
Hello all,

I've been a 4hv member since.. 04? Figured I would venture to this forum to see whats new.  I studied electrical engineering in college, then went to work for a medical device manufacturer designing buck converters and digital circuits.  Done a lot of microprocessor design and written a lot of firmware and some computer software. 

I got into electronics when my dad showed me a magazine article of building an electric fence.  Been hooked ever since.  Played with HV and coil guns for a number of years.  Now trying to start my own business off an energy storage idea.  I look forward to contributing, learning, and helping others learn.

-Nick
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on April 03, 2018, 07:47:27 PM
Hello all,

I've been a 4hv member since.. 04? Figured I would venture to this forum to see whats new.  I studied electrical engineering in college, then went to work for a medical device manufacturer designing buck converters and digital circuits.  Done a lot of microprocessor design and written a lot of firmware and some computer software. 

I got into electronics when my dad showed me a magazine article of building an electric fence.  Been hooked ever since.  Played with HV and coil guns for a number of years.  Now trying to start my own business off an energy storage idea.  I look forward to contributing, learning, and helping others learn.

-Nick

Welcome Nick!

Always nice to see some electrical engineers that also has electronics as a hobby, there is fewer of you than there used to be.

I know you can not write much about your business development and products, but please do share if you have good information that would not endanger your own future sales :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: StaticBuildup on April 16, 2018, 01:13:04 AM
Hi everyone,
I'm Lucia from London, UK.
I am an electronics hobbyist with an interest in static electricity, sparks, plasma and music-related projects. Recent projects include a static detector and musical neon oscillator. I would like to make a Tesla coil, but they look quite difficult.
I hope I can learn from this forum, and help others to learn.  :)

Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Paultesla on April 19, 2018, 09:45:21 PM
Hi All,

I've been into electronics for over 35 years and I'm an RF design engineer. It is my passion, being a career and a hobby.

I tinker with high power high voltage Tesla coils for fun. I've been on 4HV for quite a long time, and been into Tesla coils for about 15 years.

House moves and other pressures have limited how much time I have been able to put into the hobby, but I am hoping to get back to my DRSSTC conversion of my 14" coil.

I'm from the UK.

Cheers,

Paul.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Nijin on May 05, 2018, 02:03:25 PM
Hi everyone,

My name is Alexandre, i'm a french student in Electrical Engineering. I began to build tesla coil last year with a first SGTC then i upgrade it in DRSSTC mode. I have geat projects with tesla coil, my school (INSA LYON) ask me to promote it in differents science events near Lyon :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Andy Kay on May 05, 2018, 08:45:52 PM
Hi guys, my name is Andy Kay and I'm from England. I had an interest in electronics from an early age, and after attending university I started work in the industrial electronics field, moving on to telecommunications, and quickly found myself in software development. I'm now retired and revisiting the electronics scene. High voltage has caught my interest, Tesla coils, voltage multipliers, Jacob's ladders, etc. and I'd like to learn more about this stuff. Hoping this is the place to find instruction and inspiration.

Edit (9-May-2018):
I've been here a little while now and I've enjoyed reading the posts. I had tried to sign up to 4HV but got no response, so very happy to have found this site. Just want to say a big thank you to Mads.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on May 07, 2018, 01:08:22 PM
Welcome Lucia, we will help you to build a Tesla coil is some weeks/months time, just get an idea of your budget, topology and what tools you have available.

Welcome Paul, good to see some experienced people still building, really looking forward to hear more about your large DRSSTC conversion project!

Welcome Alexandre, please do show your coils and share video/pictures from your performances.

Welcome Andy, I look forward to see what project you will start out with and I hope I can help you on the way :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Felix Bieri on September 20, 2018, 07:42:41 PM
Greetings everyone

My name's Felix, I'm an electronics engineering student in Switzerland. I began building Coils in my apprenticeship and have built my first SGTC with around 300kV output (30cm sparks). Afterwards I immediately started building my DRSSTC which is nearly tripple the size of my SGTC. Well, long story short.... I'm currently stuck caus it won't work, so thats why i'm here :o
I worked with my coils for around 3 years now.

Great to meet you guys  ;D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: NEYi on September 29, 2018, 05:12:46 PM
Hail fellows, I'm new here. ;D

Well, little about myself – I'm a 24 y.o. dude, living in Ukraine and doing electronics for hobby. Got special passion for HV stuff.
Already got plenty of cool projects, bot they're mostly known only in my region, I rarely appear on foreign forums.

Well, I hope you'll be interested, I'll tell about some of them in the topics. :)
-Eugene.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: alan sailer on September 29, 2018, 06:03:08 PM
Good to see you.

I'm more of a lurker than a poster but I hope you get some good exposure on this site.

Cheers.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: NEYi on September 29, 2018, 07:12:18 PM
Good to see you.
Oh, hi Alan – I know this good fellow. :D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: futurist on September 30, 2018, 03:33:49 PM
Welcome NEYi!
I think I saw few of your videos on youtube about CPLD DRSSTC drivers and bluetooth interrupter. Did you design them? There is not much info about them in English and I'd love to hear some details
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on October 01, 2018, 09:58:13 AM
Welcome Felix and Eugene :)

Please do also share your youtube channels and such if you have it, I got so many subscriptions that I am not always sure if I have all the interesting channels added :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: sjsimmo on November 20, 2018, 02:52:27 AM
Hi everybody!

I am 17 years old, and have taken an interest in the electronics hobby since I was about 6. I am from Australia, and have just completed year 11. I have previously built a small SSTC, and am now working on my first DRSSTC. I've joined the forum primarily to seek advice on the DRSSTC (not going quite to plan at this stage...  :P), but I also hope to stay around, and help others.   :)

I look forward to getting to know you all.

- sjsimmo
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on November 20, 2018, 08:34:59 PM
Hi everybody!

I am 17 years old, and have taken an interest in the electronics hobby since I was about 6. I am from Australia, and have just completed year 11. I have previously built a small SSTC, and am now working on my first DRSSTC. I've joined the forum primarily to seek advice on the DRSSTC (not going quite to plan at this stage...  :P), but I also hope to stay around, and help others.   :)

I look forward to getting to know you all.

- sjsimmo

Welcome to HVF :)

We will soon get you going with that DRSSTC and please do make a thread about your SSTC if you want to show it off, looks like its built on top of a PC power supply?
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: sjsimmo on November 20, 2018, 09:56:15 PM
Thanks for the reply!


I'll probably make a thread for it some time. The box is actually made from 1.5mm thick aluminium sheet :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: DashApple on December 14, 2018, 10:21:25 PM
Hey Everyone .

I'm from the Uk  , I have been interested in electronics and HV for a while now Have done a few small VTTCs and SSTCs and other bits a peices . I try and collect HV transofmers mostly .

I look foward to reading the threads on here and seeing what people do and hopfuly oneday making a small DRSSTC .
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: NordicGaben on December 16, 2018, 06:13:54 PM
Hello everybody, greetings from Iceland.

My name is Gabríel Snær, Translates to Gabriel Snow. I am 21 years old, I am a electrician, electronics technician, and currently a student and teacher teaching digital electroncis and theory of electricity. I have interests in far too many fields. The Tesla coil has captivated me since I first saw highvoltagefeathers Tesla coil play sail many years back. I attempted to build a SSTC a year and a half ago but It was my finals project so I had a deadline, I go it runnig int time but it was poorly optimized and tuned.

I want to make another DRSSTC that is audio modulated, I am learning the physics behind the Tesla coil deeper. I came to this forum to learn and see how others are making their Telsa coil, I currently plan on replicating a supported DRSSTC and interrutper and in building learn from it to hopefully design my own customized one. I have made many projects over the years, I have sadly never documented them. This year I plan on starting a YouTube channel where I build projects and then later upload a video that goes over the theory involved in the project, be it physics or programming.

I am really impressed by the number of people that are active on this forum. Currently the best sounding coils I know of are Highvoltagefeathers, Eric Goodchilds and Fabrício H. Franzolis's coil which I think are based on Steve Wards DRSSTC.5, correct me if I'm wrong. If you guys have any info on that I would love to set up a correspondence or thread to discuss and piece the build together  ;D

Hope to use this forum a lot.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on December 16, 2018, 07:48:55 PM
Welcome both Dash and Gabriel

You have come to right the place for seeking out help on building a DRSSTC and if you want to discuss or get feedback on your previous projects just give it a god on making a thread about them, there is always something to learn from both SSTC/VTTC construction that can be taken into the DRSSTC realm

I look forward to write and read with you :)
Title: 迎词、来
Post by: black.yang on January 06, 2019, 08:20:21 AM
Hi, everyone.           
I am a 24-year-old Tesla coil hobbyist from Wuhan, China.
My job is Chip Technology Support Engineer.   
       
I have 11 years of Tesla Coil hobby experience.           
The first Tesla coil was made by winding the coil with a mineral water bottle. The arc was only 2 cm. ;D           
At present, I have done DRSSTC, QCWDRSSTC and some CLASSE design experience.     
     
 I just finished the design of "Yunbao" jump pulse driver the year before last, see it           
https://4hv.org/e107_plugins/forum/forum_viewtopic.php?id=179388 (https://4hv.org/e107_plugins/forum/forum_viewtopic.php?id=179388)
This is part of my work page.
https://i.youku.com/i/UMTEyMDQ1MzYw/videos?spm=a2hzp.8244740.0.0 (https://i.youku.com/i/UMTEyMDQ1MzYw/videos?spm=a2hzp.8244740.0.0)

‘Yunbao’pulse skipping driver

Recently, I am developing UD3.3A for full digital signal input phase shifting.


At present, I am completing the work of writing the hardware logic of the phase shifting part of the alternating hard switch bridge arm.
Hope to share with you more! Thank you!  :D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on January 07, 2019, 06:48:06 AM
Hi black.yang and welcome to HVF

Impressive coils, outstanding work on the digital driver and great to have someone on the forum that understands Chinese, as you could see in the aliexpress driver thread, we do have a hard time when all we have available is google translate and sometimes a lot of text comes on pictures.

Please do make a thread or two to show some of your best coils, I took a look at your youku account (Chinese pendant to youtube?) and you have a good variety of work there.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: black.yang on January 10, 2019, 02:11:58 AM
Hi black.yang and welcome to HVF

Impressive coils, outstanding work on the digital driver and great to have someone on the forum that understands Chinese, as you could see in the aliexpress driver thread, we do have a hard time when all we have available is google translate and sometimes a lot of text comes on pictures.

Please do make a thread or two to show some of your best coils, I took a look at your youku account (Chinese pendant to youtube?) and you have a good variety of work there.
Thanks for your warm welcome.
I think I may be able to help translate the Chinese I can, even though I sometimes rely on Google.;D
In the future, I will gradually update my work in the forum posts.
Title: Re: 迎词、来
Post by: profdc9 on January 10, 2019, 06:56:59 PM
I too made a pulse skip driver, based on analog hardware (the UD 2.7c).

If you have been able to get sword-like sparks, or even some interesting results using pulse skip behavior, please share it.

The driver I designed is at

https://github.com/profdc9/DRSSTC-PCB-Pack/tree/master/ud29

And the thread where I show the waveforms and results is

https://highvoltageforum.net/index.php?topic=346.0

Thanks for any experience you can shared about your pulse skip driver behavior.

Dan

Hi, everyone.           
I am a 24-year-old Tesla coil hobbyist from Wuhan, China.
My job is Chip Technology Support Engineer.   
       
I have 11 years of Tesla Coil hobby experience.           
The first Tesla coil was made by winding the coil with a mineral water bottle. The arc was only 2 cm. ;D           
At present, I have done DRSSTC, QCWDRSSTC and some CLASSE design experience.     
     
 I just finished the design of "Yunbao" jump pulse driver the year before last, see it           
https://4hv.org/e107_plugins/forum/forum_viewtopic.php?id=179388 (https://4hv.org/e107_plugins/forum/forum_viewtopic.php?id=179388)
This is part of my work page.
https://i.youku.com/i/UMTEyMDQ1MzYw/videos?spm=a2hzp.8244740.0.0 (https://i.youku.com/i/UMTEyMDQ1MzYw/videos?spm=a2hzp.8244740.0.0)

‘Yunbao’pulse skipping driver

Recently, I am developing UD3.3A for full digital signal input phase shifting.


At present, I am completing the work of writing the hardware logic of the phase shifting part of the alternating hard switch bridge arm.
Hope to share with you more! Thank you!  :D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Experimentonomen on March 17, 2019, 09:13:47 PM
Hello!

Experimentonomen here, i used to be registered over on 4hv.org but eventually forgot about the site when life called, and now the login seems disabled, so i found my way here through the irc channel.

Since then i've had a few jobs, moved to an apartment, got a cat and bought a truck which im currently sinking most money into repairing things that has broke since buying it around a year ago.

As i had a day job consisting of taking apart all kinds of electronics for the past 4-5 years i kinda lost interest in the hobby at home, but now as that workplace shut down last year and i now work as a driver instead, im starting to think of projects to do again.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Bambinz on March 18, 2019, 11:29:02 AM
Hi all,
I am a 27-year-old  from Switzerland.  I speak italian therefore excuse me for my english  ;D

I'am at my first experience in a tesla-coil design  ;D

Thanks in advance for your time and help :)

Bambinz
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on March 19, 2019, 12:20:34 PM
Hi Experimentonomen and Bambinz, welcome to HVF.

Experimentonomen, it has been many years since you were last on IRC and it was good to see you active again, got any projects on your mind?

Bambinz, your english is more than good enough for getting your message across, do not worry too much about that. When you make a thread about your design/work, please just include as many details, written in text and pictures of the things in question, makes it much easier to help you :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Experimentonomen on March 19, 2019, 01:32:32 PM
Latest project thoughts i've had have been getting back into the induction heater project, various audio amplifier projects, both tube and ss ones. And maybe some smallish sstc. I just need to get a lab desk setup at home again as i moved that off to a location that i ended up never going to.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: DICKEYBIRD on March 30, 2019, 02:08:58 PM
Happy Saturday gents!  I joined this morning and posted a question about an induction heater PS.

I am 71 years old and  live in Collierville, TN USA.  I'm not very knowledgeable in the electronics field but am fascinated with what you guys do and love reading about your many projects! I am a hobby machinist and lifelong tinkerer with a teeny bit of knowledge about a lot of different things.

Cheers! :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: AndreiRS on April 06, 2019, 02:31:54 AM
Welcome DICKEYBIRD. ;D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: shrad on June 19, 2019, 09:35:52 AM
Hi all, this is shrad, migrated from 4hv to here since the place was not alive anymore...

To introduce myself a bit in this new place, I'm an IT guy, electronics guy since the young age, I have had enthusiasm for high voltage for many years, I'm a science enthusiast and self learned in many subjects like lasers, spectroscopy, valve amplifiers, etc...

I'm interested in all technical aspects of all domains, active in local associations and launched some local things like a collective vegetable garden and a repair café in my village

Last but not least, currently workin at a major grid management company in Brussels as a contractor, which is somewhat related to the interest I have in HV :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on June 19, 2019, 10:49:45 AM
Hi Shrad and welcome to HVF

Got any high voltage projects going on for the hobby or professionally?
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: johnf on June 20, 2019, 03:50:56 AM
Hi Guys /Gals
My name is John I'm 63 and live in New Zealand
I work in high voltage high current and high Vacuum as a day Job
\https://www.gns.cri.nz/Home/Our-Science/Energy-Futures/Advanced-Materials
I've been an amateur radio buff for 43 years ZL2TUD (look me up on QRZ.com)
before my present Job I was chief enegineer at an RF company making VHF/UHF equipment that was sold around the world http://www.exicom.co.nz/

 ;D
PS I'll get round to an avatar shortly
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: shrad on June 20, 2019, 08:57:42 AM
Hi Shrad and welcome to HVF

Got any high voltage projects going on for the hobby or professionally?

Not for the moment, except maybe some tube amplifiers which are waiting to be designed and built (some GU50 would be glad to go out of their box)

Right now I'm distilling ideas on a guitar amp based on a mosfet follower with high amplitude preamp to experiment on a more qualitative approach of guitar amps
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Coupling on June 22, 2019, 11:10:02 PM
Hello everyone. I've been doing electronics on and off for about 10 years. I've been in the power supply industry for 5 years now.

I made a small solid state tesla coil in college in 2010. Ever since then I've been trying to design something new, but could never keep up with Steve Ward and everyone else- especially on such a low budget. Between that and life taking me through many twists and turns, I never really got anything else done.

Now that I have worked a few power electronics jobs, including high voltage and radar, and my life has stabilized, I'm ready to get back into it! The catch is that I don't have much time, but I have a pretty good budget. Not to mention, I'm actually knowledgeable about the stuff, now!

My first goal is to make a handheld lightning gun, like Steve Ward's. I can't wait to post my progress here.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Twospoons on June 23, 2019, 01:17:50 AM
Hi there. I'm another shiftee from 4HV.org.  Came looking for a more active forum.
I've been a professional electronics engineer for over 30 years now, but I've been messing with electronics since I was about 8. I'm also interested in physics and chemistry, PC gaming, gardening and sea fishing from my kayak.
I live in New Zealand with my wife, two daughters, three cats,  two rabbits, 7 frogs, and however many wild ducks my daughter is feeding at present.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Patrick on June 23, 2019, 10:07:04 AM
4hv.org forever !!!  >:(
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Jeff B on June 23, 2019, 05:52:56 PM
Hi All,

So I am Jeff and I live near to Bristol in the UK.

I have always been interested in electronics but decided to go for Chemical Engineering as a career, now I try to keep the hobby going with a handful of projects.

I found this forum while looking for info to help with my 2500w induction heater project - lava maker as my 6 year old son calls it!

I have attached a picture of my latest induction heater setup, this used 8 off 750W 12V server PSU (2 in parallel and 4 series) to give a de-rated 3kW unit operating in 12, 24, 36 and 48V increments. The first unit with 4 PSU in series needed to be de-rated and didn't survive!

I also included a solid state relay for simple on/off control, 50A RCD for over current and a bunch of 4mm RC bullet connectors and 10AWG silicone cable.

Looking forward to many interesting discussion.

Jeff B
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Patrick on June 24, 2019, 12:47:16 AM
Hi All,

Looking forward to many interesting discussion.

Jeff B

nice work. and you have a real time power meter too.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on June 25, 2019, 11:45:11 AM
Welcome to all new members on HVF, good to see you pop inhere and give a word or two about yourself.

@Johnf, I hope we get a share of your huge experience, that is a serious business end you are in where high voltage/current/frequency is actual in commercial use.

@Coupling, A portable handheld QCW is no easy task, looking forward to see how you execute that project!

@Twospoons, do you have any projects going on that we will get to see?

@Jeff B, the induction heater threads have really taken off with experiments with the, now so cheap, Chinese units, so good to see another chime in with more experience on using these.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Twospoons on June 27, 2019, 01:34:01 AM
My current project list isn't terribly exciting : High CRI LED lighting for my wife's art studio, a tube phono preamp so I can hear all my old vinyl, and some improvements to my 3d printer.
I suppose I should dig out my half-built VTTC and finish that off. Its been gathering dust for far too long.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: klugesmith on July 15, 2019, 07:33:30 AM
Hi.  My real name is Rich. Grew up and have lived most of my life around San Francisco Bay, California.  Have used the name klugesmith at the 4hv.org forum for about 1000 posts over 10 years, and on ebay long before that. Day jobs in recent decades have been about time-domain electronic instruments and serial data communication.  Now 500 mV is a "large" digital voltage swing, and 10 ps errors get attention in meetings.

High voltage (where electricity can go outside the wires without help) is a hobby, along with mechanical and optical tinkering etc.  Especially when there are teaching opportunities.  I hope this forum will be an inspiration to do more making.
Title: Re: Welcome new members, come say hello and tell a little about yourself :
Post by: ElectroXa on July 20, 2019, 09:45:42 PM
Hello everybody,

I'm a French electronics hobbyist, and I'm in the last year of high school.
I fell into electronics when I was 9 years old, assembling Velleman kits and tearing down broken appliances for the components.

I joined this forum to discuss about HV and electronics

I'm interested in HV, radio frequency, power electronics and classic electronics.

ElectroXa
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on July 27, 2019, 08:29:13 PM
Welcome both klugesmith and ElextroXa, it is good to see that we still have the old-timers and experienced coming along with relatively young people to the electronics hobby!

Looking forward to see your projects or questions :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Grzegorz2121 on August 21, 2019, 01:10:06 AM
Hi. Im a 19 years old guy interested in nearly everything technical or scientific.
I was thinking about building my first SSTC for a long while. Now I managed to buy most of the components that i need.
All my project began with a thought of reconstructing a interesting machine from scratch in the simplest form possible.
Thanks to that and years of failing my way to working solutions i have gained tons of experience.
One of my first HV projects was a push-pull TV trafo plasma speaker. It still works and I'm still impressed it didn't blew up.
I will talk about my creations in the dedicated topics.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on August 22, 2019, 09:13:44 PM
Welcome Grzegorz

Where are you from? Are you currently studying anything electronics related or is it a hobby?

Looking forward to see your projects :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Seb555 on August 25, 2019, 01:17:41 AM
Hi folks!  ;)
My name is Sebastian and I live in Massachusetts in the US. I'm 17 and have been into engineering and science my whole life. I can't believe how many other high schoolers are on this forum! (I thought I was alone. lol) In terms of my hobby, I've started doing electronics projects about a year ago and discovered the world of HV by accident because I was reading about spark gap radio and then somehow found out about SGTCs. Since I don't have a flyback, I decided to make a SSTC instead. Last week I finally got it working! (though it's poorly optimized). My goal is to turn my tesla coil into a guitar amplifier by pulse width modulating the interrupter signal with audio.

Thanks for the welcome!  ;D
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: DForte on August 25, 2019, 07:52:06 PM
Me! I'm fascinated with Tesla, as I'm sure we all are. I don't just want to build a better Tesla Coil but to continue his research and use the tech in all aspects of life.

I am 37 as of this writing, 2019, live in Florida with my Wife and am a computer programmer.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: freq_out on September 11, 2019, 05:40:14 PM
Hello All,

My name is Brian. I am some kind of software / hardware developer (IoT stuff mostly) from Wisconsin. I have a two-year degree in Electrical Engineering Technology from a local technical college. I have been interested in high voltage since I was a kid, and have made a marginally successful spark-gap Tesla coil with hopes to complete many more projects in the future with the help of this amazing forum.

Nice to meet you!
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: coilinator on September 11, 2019, 07:54:30 PM
Hi High-Voltage Members !

My name is Andi and I was born in Germany, 1994. Did my technical college some years ago and works now as an 5-Axis CNC machinist. I love working with metal but I saved the electronic stuff for my hobby wich I began about the age of 14 I think.
But this was not that easy, there´ve been the WWW but was way to young to use it properly and it was not as good as it is now ^^ So I had to read books or ask my grad dad who also did electronics but real old school (he´s born 1935) but so I learned by heart. As I get older and also the Internet began to developed, it was very simple to do researches about circuits, parts and these things ! And some time I saw something super strange, looked like a piece of pipe with a large metal ring on  top that produces loud, long arcs - some people call it teslacoil ... xDD

Over the years I builded nearly any kind of TC, startet with an regular SGTC, VTTC, SSTC, OLTC, DRSSTC (I+II) and now I´m currently building my first QCW-DRSSTC !  But of course also just started with the little Ignition coils- flybacks NE555 circuits and so on, just step after step. Some times the circuits won´t work and that made me very unhappy but if they do it has allway been the greatest !

Longe time I looked for a place where the people just do the same things, where I can ask my questions and also may give answers to others - so this Forum makes a good impression to me  :D

I wish you an nice day !


Andi

Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: MRMILSTAR on September 11, 2019, 09:00:31 PM
Some how I missed this thread when I registered. Better late than never!

My name is Steve White. I live in Cedar Rapids, Iowa. I am 66 years old. I am a retired electrical engineer with a MSEE (Master of Science in Electrical Engineering) degree. My working life has been in the aerospace industry.  My primary area of work involved the design and implementation of communications equipment for HF, UHF, VHF, and SATCOM. I was mostly concerned with the implementation of RF modems using real-time DSP software and hardware. I also spent some time designing infrared systems.

High voltage is one of many hobbies that I have including astronomy, cars, motorcycles, machining, computers, and hiking. I have my own metal lathe, turret mill, and metal-cutting band saw. They are all manual, not CNC.

I built my first tesla coil, a small VTTC, when I was 16. I have currently built:

1. A small 6L6-based VTTC putting out 0.5" discharges
2. A 8.6" pig-powered RSGTC drawing 6.5 KVA putting out 9-foot streamers
3. An 833A-based VTTC putting out 20 inch streamers in interrupter mode
4. A 20-stage Marx generator capable of 12" sparks
5. A pulsed power generator for coin shrinking, can crushing, and disk launching

My current project is a disk launcher attachment for my pulsed power generator. After that my next project will be a large Cockroft-Walton voltage multiplier.

I came here primarily because 4hv.org is broken or at least the attachment functions are broken.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: davekni on September 17, 2019, 06:48:38 AM
Just created an account yesterday, so here's my (David Knierim) intro:

So wonderful finding a forum restricted to real science!  A huge "thank you" to moderators!  The only other forum I've posted to is the Soap_Bubble_Wiki.  (That's another fun hubby.)  I'm just a 62 year old kid :)  My passion is getting kids interested in science - where my volunteering time is focused.

A few of my larger projects:
    Coin shrinker - my first high-power project.  Played with launching aluminum disks too.
    Synchronous rotary spark gap Tesla coil, 3kW.  (Initially used array of 48 TRIACs instead of spark gap - lasted for 3 or 4 sparks.)
    Continuous single-resonant 2.5kW coil using two separate H-Bridges from two isolated 120V line cords, transformed to 2kV, then added.  Makes short thick arcs (~40cm) that work really well for coloring with metal-salt-solution breakout points and for making thin steel and aluminum wire into sparklers.
    DRSSTC using 40 TO247 IGBTs (10 parallel for each switch), 2600A peak current (should handle 3500A later), 300V bus for now (450V in the future - only brief tests there), 3kW average (10kW eventually).  Barely running in time for showing 9 days ago at our local Maker Faire.  I've designed and built all circuitry, except for a last-minute MIDI interpreter kit to add live keyboard music.
    With my son Abe, a supersonic ping pong ball launcher.  We now have the Guinness record, making holes through 3/4" plywood.
    440kV Marx generator that fires up to 120 times per second.  Plays tunes at a very-low register.  6kW average input power.
    Magnetic levitation, both AC induction of aluminum plates and permanent magnet levitation of spinning tops (7" float height - perhaps a record).

I spend as much or more time with smaller projects suitable to bring to kid's functions, such as an AC-induction penny launcher/sorter, showing that newer pennies with zinc inside don't conduct as well, so don't go as high.

For work, I'm an engineer at Xerox.  It's a blessing to get paid to have fun designing and inventing!

Joined here to both learn and hopefully contribute information too.  Thank you to Mads Barnkob for pointing me to the coupling factor etc. calculator.  Would have saved me writing my own if I'd known about that a year ago.  Been enjoying learning about vacuum potting too.

My youtube channel is "davekni":  https://www.youtube.com/channel/UCFic36uGWH-Rfsorg4TQhSQ
I've posted videos of several of my newer projects there.  All my uploaded content is of my science projects.

David Knierim, Wilsonville, Oregon, USA
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: rustedone on October 08, 2019, 05:06:38 PM
hello everyone.
my name is mahdi. not that is important  ;)  I'm a beginner . and I would love to learn everything about electronics .
my reason for joining is obviously to learn more and exchange the little information i have for now. and mostly for industrial propose.
 I'm working on making a induction forge. for while ... there are two stage that i need to work one .1: power supply and inverter .
I picked a circuit for each one ... but i reaaalllly wish to talk about it with more experienced people... so lets get a long. :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: babass on November 14, 2019, 05:13:01 PM
Hi High voltage members !
I'm babass, 21 years old French guy who wants to make a SSTC with a full H-Bridge IGBT, but has some problems with that I'll explain in another topic. That's will be my first tesla coil.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: AstRii on December 06, 2019, 01:27:03 AM
Hello,
My name is Mark i'm from Czech Republic, i am 20 years old and my dream is to build a large DRSSTC to produce 4m+ streamers. I'm pretty much a beginner in electronics but a fast learner ;) :D I've been into electronics for a year now all thanks to cool projects like Tesla coils, Marxs Generators, Coil Guns etc... It's fun for me to do high voltage / high current projects, it's always interesting and educating :D I'm studying Czech Technical University in Prague although i'm more focused on building my tesla coil instead of studying :D Right now i'm developing my first DRSSTC, it's a TO247 IGBT full bridge FGY75N60, the coil is about 60cm tall and once i'll get a 1 meter streamer out of it i will start building my DRSSTC II which will be my large IGBT brick DRSSTC. I'm really thankfull to youtubers like ElectroBOOM, GreatScott and people like Mads, Fabricio Franzoli and Kizmox for sharing their Tesla Coils on Youtube, thanks to you guys i'm interested in electronics even more and i think it's a privilege to understand how DRSSTC works, so.. Thank you! :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: dj.cosmo.esq on December 26, 2019, 03:43:12 PM
Greetings earthlings, my name is Courtney but everyone calls me Cosmo. I'm male 39 from southern California. I'm addicted to the wonderful smell of ozone. I've been building coils for 10 years or so. Mostly SGTCs and a couple of SSTCs and I recently bit of more than I can chew. I decided go balls out ¯\_(ツ)_/¯ and make a DRSSTC. For a while I've followed the work of many like the Steve's (Ward n  Conner) and more recently Mads n loneoceans... I went with an 8in form with 29awg. It's around 2140ish turns and I'm driving 1mbi600px-140 bricks in a half bridge. My first DRSSTC I try driving bricks (stupid I know) but I got a "signal generator assisted" first light but I need to figure out this feedback phenomenon before I blow these bricks up! ಠ_ಠ
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on December 27, 2019, 12:28:25 PM
It almost feels a bit late to welcome Dave, I feel like he have been here for so long, due to his awesome replies and great effort to help people :)

Mahdi and Babass, I look forward to see your projects and how we can help you succeed.

Mark and Courtney, you have come to the right place. Taking on a DRSSTC is quite a mouthful if it includes learning all the basic high frequency high voltage stuff as well, but we are all at your service. I look forward to see you present your projects in details with pictures and asking to good questions about how stuff works!

Welcome all to HVF!
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: John123 on December 27, 2019, 12:55:34 PM
I often potter about with electronics and like a bit of the old high voltage stuff, but at the same time I'll often not do anything of the sort for months and even years on end. It's like a hobby I can fall back on.

I do like fixing stuff around the house and for friends and family however, saves a bit of landfill.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: soviet_lynx on January 03, 2020, 09:19:09 AM
Hello, I'm a Tesla coil enthusiast from Lanzhou, China. I like electric arc.
My video home page:
https://space.bilibili.com/314951

Some of my works:
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Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: milkman2046 on January 03, 2020, 09:57:54 AM
Hello, I'm from Jilin, China. I'm a high voltage fan. I like Tesla coil very much.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on January 03, 2020, 10:26:54 AM
Hello, I'm a Tesla coil enthusiast from Lanzhou, China. I like electric arc.




Welcome both new members from China

Could you please make a topic in the Tesla coil section with more details of this coil? It looks huge, I hope it is not just the angle of the picture ;)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: soviet_lynx on January 03, 2020, 02:15:45 PM
This DRSSTC is 5 meters high. The diameter of grading ring is 1.5m. The resonance current of primary circuit is 2.5kA. The Electric arc is 5 meters.
 [ Invalid Attachment ]
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: SteveN87 on January 05, 2020, 02:25:20 PM
Hi, I'm Steve from the UK - a semi-retired electronic/software engineer and a long-time reader of 4hv. I decided to join HVF after reading through the "Transformer (ferrite core)" section, where (as a flyback enthusiast) I found many relevant discussions.

I'm current resurrecting a MOSFET ignition coil driver I used in the 90s - updating it with an IGBT and a better clamp. Will post the circuit if it turns out to be any good.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Nicko on January 14, 2020, 10:50:54 PM
Nick from the UK here - I just checked "the other place" after a long time away to find it moribund, so ended up here!

My degree is in EE and physics, but I only briefly worked as a design engineer before moving into the finance industry, firstly by doing security, then running a financial software house, and latterly overseas in very hot countries.

I've always maintained a decent lab at home in the UK, and have just rebuilt it (it was in an old mid-Victorian building, and the floor collapsed) - there's a bit about the old setup and some of my HV-related projects on "the other place". We did a few of the UK Teslathons and similar stuff, but not for a long time.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mysteriousduck on January 18, 2020, 05:19:49 AM
Howdy Yall!

My name is Mike and I'm from Texas. I've always had a fascination with electricity and have built a few induction heating prototypes for loosening stuck bolts, case hardening head bolts, and heat treating exhaust valves. About a decade ago, I built a spark-gap tesla coil from patent drawings and that got me set on a path. Recently, I've been working to build a higher-power induction heater capable of smelting and zone-refining. My degree is in architecture, and I am a year and half from obtaining my license. I love finding new ways to bring technology into my work, and I'm excited to see all of the amazing work members here have done!

Cheers,

Mike
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: rvpilot on January 19, 2020, 02:00:30 AM
Hello everyone. I'm a retired electrical and mechanical engineer in North Carolina. I have a machine shop and electronics lab at home and love to build all things electrical and mechanical. I haven't had a chance to do too much while building a career and family but nowadays I homeschool my high-school age son who also loves to tinker. I came across this sight because I started doing research into an induction heater. My son takes machining classes at the local community college and his instructor was trying to find an alternate way of heating up his CNC tool holders, rather than purchasing a very expensive induction heating system from the manufacturer (when the tool holders are heated, the hole in the tip expands, the tool bit is placed in and the holder cools down to shrink-fit the part in place).  Anyway, that's how I came here and I'm sure I'll find some very useful information.

But now that I've perused the sight a bit I see a lot more interesting topics I'd like to delve into later. I look forward to chatting with y'all and hope I can be of help to some.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: HVZapp on January 20, 2020, 10:23:03 AM
Hello everybody.
As you know, I am new here.(obviously)
I am currently(hah), living in Japan and I LOVE high voltage experiments, especially tesla coils and voltage multipliers.
I am on the way to building 2 tesla coils, one SSTC and a Spark Gap Tesla gun. Although I have quite a history of failed experiments, I just hope it works.
See you guys whenever.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: HiVi on March 06, 2020, 06:36:02 PM
Hello everybody,

I come from Slovenia. I am an automotive engineer, studied mechanical engineering in field of mechatronics.
Highly interested in HV and lasers, came here from other forums in search of active communities.
I have some experience in ionothrusters, laser projectors, made and programmed quite few circuitboards and MCUs.
Hope we will enjoy our stay here together.

Best regards,
Borut
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: curtislemay on March 27, 2020, 06:30:47 AM
Hello! I've wanted to build a tesla coil since 10th grade, but haven't ever actually done it. I've finally started taking intro EE classes in college, and I'm starting to understand enough about coils to actually try building them. I built a Slayer-Exciter that got a 2cm spark, but I'd like to eventually build a musical DRSSTC.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: prabhatkumar on March 27, 2020, 08:25:16 PM
Hello there everyone !! I am prabhat and I come from India. I am a first year electronics engineering student who has great interest in this field but I know very little . I am trying to learn a lot of things from places like YouTube and Google and also tried building some small projects . I have had built a small 100 watt induction heater which works quite well. The latest one being the sstc 3 from kaizer site itself. And i have opened 2 threads regarding the same out of which one is completely resolved . I had passion for this field for a long time but due to lack of theory knowledge in this field I get stuck many a times and thats when I need this forum's members help. My best wishes with everyone during this covid  -19 outbreak
 Stay safe !!
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: robg on April 26, 2020, 12:37:25 AM
Hello - my name is Rob. I've been designing custom analog bipolar and CMOS integrated circuits for 28 years. I've done chips for everything from military to toy trains to medical equipment. DC to GHz. I now live in Montana (USA) and work as a consultant. 

 The high voltage world is a total departure for me. None of my chips have ever exceed 500 mW. Most are less than 1 mW.  I have very little experience with power electronics like IGBTs or even discrete components. 
 
Four years ago my son, who was 13 at the time, saw Electroboom's Tesla Coil and wanted to build his own. While we could duplicate Medhi's poor results, we wanted more. My son actually gave a lot of good ideas that advanced us to where  we got much stronger arcs but had a problem blowing up transistors.  As an aside, it turns out that you can be a very well respected electrical engineer for nearly thirty years, but if you smoke up the house *just once* your wife makes you work with a fire extinguisher by your side. I tell her I now put fuses in all power lines, but she is still tense when I'm working on this. 

Covid-19 has given me time to resurrect the project. Although I do now have a single transistor design that can produce 10" arcs reliably, I still blow a lot up trying to improve the performance. I wish I learned about TVS diodes before last week and saved a lot of transistors...

 [ Invalid Attachment ]
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: johnf on April 26, 2020, 09:04:42 AM
Welcome Prabhat
as an engineer hopeful you have much to learn
you learn from your own mistakes ie working out what went wrong and doing it again with that mistake fixed and now looking for the next one.
you do learn a little from others mistakes, but your own are where the most learning comes from
Go out and experiment if you do not understand why it went wrong document fully and put it up here on this site, --the brains trust is sure to help

enjoy
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Rowdy on May 24, 2020, 02:33:55 PM
Hello all, well I just read thru all the "Welcome new members " posts and have now understood why 4hv hasn't
replied to my registration, a few of them are here!! 8) To start with, I am 56 yo service tech for Phenix Technologies in Maryland. We manufacture High Voltage, High Current, High Power test equipment and components. Started learning about electronics about 9 yrs old, spent a lot of time at Radio Shack and reading their books, then more formal study in high school. Went into the military and got more formal study at TOFTOY
at Redstone Arsenal Huntsville, AL. My MOS was 27E, TOW/Dragon missile guidance technician. After military
I went to College and got my Associate Degree in electronics. My passion is HV and working on a frankenstein
SSTC that is mix of Steve Wards SSTC-5 and a few others. As I mentioned I am a service tech, I travel a great
deal around the world, and COVID has put that to a halt. So lots of time to get frankenstein spitting lots of PD  ;D. I hope to learn more from you guys and contribute to this forum. It's great to be here!
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on May 24, 2020, 08:16:40 PM
Hello all, well I just read thru all the "Welcome new members " posts and have now understood why 4hv hasn't
replied to my registration, a few of them are here!! 8) To start with, I am 56 yo service tech for Phenix Technologies in Maryland. We manufacture High Voltage, High Current, High Power test equipment and components. Started learning about electronics about 9 yrs old, spent a lot of time at Radio Shack and reading their books, then more formal study in high school. Went into the military and got more formal study at TOFTOY
at Redstone Arsenal Huntsville, AL. My MOS was 27E, TOW/Dragon missile guidance technician. After military
I went to College and got my Associate Degree in electronics. My passion is HV and working on a frankenstein
SSTC that is mix of Steve Wards SSTC-5 and a few others. As I mentioned I am a service tech, I travel a great
deal around the world, and COVID has put that to a halt. So lots of time to get frankenstein spitting lots of PD  ;D. I hope to learn more from you guys and contribute to this forum. It's great to be here!

Hi Rowdy and welcome to HVF!

Great resume and I hope you will feel welcome and get all the help you need, looking forward to see a project thread about your SSTC.

Phenix seems to be in a great variance of fields, any specific you work in as service technician?

I would like one of these, if you happen to have one at work that is just collecting dust and is to be thrown out :D https://www.phenixtech.com/Files/Admin/PDF/40302_Ultra_HV_DC_Test_Systems.pdf
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Rowdy on May 24, 2020, 10:39:45 PM
Hey Mads, LOL no we do not have one of those in the scrap pile, customers tend to have those fixed. Lots of money in one of those units. Actually I service and calibrate everything we make.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Morvandium on July 08, 2020, 09:33:35 PM
I'm Rob Kellner (you'll see my full name in my documentation if I post projects/schematics), but online prefer Morvandium.  I started taking apart electronics  around age 5.  My last formal education in electronics was 20 years ago.  I'm a bit of a jack of all trades/renaissance man -- I enjoy learning to solve new problems far more than perfecting my skills solving variations of the same problem.

A couple years ago I started Lichtenberg wood burning, and was disturbed by the horribly unsafe practices/equipment setups most burners used -- including stories of deaths.  That led me to building safer equipment, including a high voltage power supply (+2kVAC/-2kVAC/+2kVDC/-2kVDC outputs).

Many burners don't understand basic concepts of electricity, and couldn't explain, in physics terms, WHY they did what they did.  I looked to other high voltage communities for the theory/design -- something I enjoy even more than constructing a project.  I realized, while revising my power supply design (when adding the -4kV/4kV/ -8kVDC/8kVDC/ -12kVDC/12kvDC rails), a Tesla coil wasn't TOO much more work.  That led me here.

I enjoy the challenge of building using primarily scrapped or used parts, and the occasional liquidation/discontinued parts sale--though not to the point of idiocy or sacrificing safety.  I prefer durable, versatile and robust equipment.  Before I build a coil, I'm planning a variable-speed RSG, for use with both Lichtenberg wood burning (to make various rate pulsed DC to study effects on wood burn patterns), and later on for a TC.  I'm still deciding which approach I'll take for a tank capacitor/MMC, but realizing I might have to put some real money in there.  Since the TC will be more demanding on the tank, that's what I'll design for.

When it comes to SSTCs, I appreciate the circuitry and design far more than construction.  I do love poring over the schematics and love the near-perfect resonance they can achieve.  There's something primal about a cracking rotary spark gap that I enjoy, like a hammer on hot iron.  In my mind, SSTCs are to RSGTCs what giraffes are to rhinoceroses.  ;D

I also program in several languages and have an education in computer science, though I'm a bit rusty.  I love understanding things through the lens of physics, though I have to admit, as I was teaching myself about the physics of inductors and transformers, I realized I don't seem to learn as fast as I did 20 years ago.  I think I might be getting old, lol.

I've also done residential electrical and a little home automation work.  I'm an avid fan of quality documentation--I have a degree in English--though sometimes I have trouble staying concise.  See the last 6 paragraphs as an example.
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: friday on July 27, 2020, 05:17:49 AM
I tried to log onto 4hv but couldnt happen, I tried change pass word arghh got a new connection so old email has gone,
anyway Im here , Paris form NZ

see familiar names on here
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Mads Barnkob on July 27, 2020, 10:24:34 AM
I tried to log onto 4hv but couldnt happen, I tried change pass word arghh got a new connection so old email has gone,
anyway Im here , Paris form NZ

see familiar names on here

Welcome to HVF!

You will see that many users known from 4hv is also here on HVF, the high voltage community is not bigger than that :)
Title: Re: Welcome new members, come say hello and tell a little about yourself :)
Post by: Halfcorp on July 28, 2020, 01:14:38 PM
Greetings all!

I'm an electrical & electronic engineering and computer science student from the UK. I have been fascinated with electronics/engineering and creating things from a very early age, and started my high voltage endeavors in 2013 by building Jacobs ladders and Tesla coils. Since then I've spent the vast majority of my free time on all kinds of project's including lasers, hydrogen generators, flyback drivers, Marx generators, high current metal melting transformers, Fusor's, an electric foundry and have built 3 Tesla coils to date. In recent years, I have gravitates a lot more towards microprocessors, digital systems and both high and low level programming. A lot of my projects these days revolve around Arduino's, embedded systems and servers. I suppose my career path right now is headed towards processor micro-architecture and design, as I am currently on my second of three internships with Arm and have always had a deep interest in computer engineering. However, I will definitely continue my interest in power electronics in my spare time; I am currently building my first DRSSTC right now  ;). I knew our HV community was small, so I am thrilled to see a new forum bursting with activity all these years later with more and more people getting into the subject!  :)

I document most of my projects on my YouTube and my blog linked here, but I haven't had time yet to update them with some of my older and my most recent experiments:

YouTube Channel - https://www.youtube.com/channel/UCbYNLXCvqlCoLev-WvJ37oQ
Blog - http://halflife390science.blogspot.com/

I look forward to seeing you all around the forum  :)
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