Author Topic: Welcome new members, come say hello and tell a little about yourself :)  (Read 6587 times)

Offline coilinator

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Re: Welcome new members, come say hello and tell a little about yourself :)
« Reply #60 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


Offline MRMILSTAR

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Re: Welcome new members, come say hello and tell a little about yourself :)
« Reply #61 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.
« Last Edit: September 11, 2019, 09:13:36 PM by MRMILSTAR »

Offline davekni

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Re: Welcome new members, come say hello and tell a little about yourself :)
« Reply #62 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
David Knierim

High Voltage Forum

Re: Welcome new members, come say hello and tell a little about yourself :)
« Reply #62 on: September 17, 2019, 06:48:38 AM »

 


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