Author Topic: Next Gen DRSSTC  (Read 41785 times)

Offline acobaugh

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Re: Next Gen DRSSTC
« Reply #140 on: April 02, 2021, 08:03:40 PM »
Still no luck. New programmer works. Built a binary from the latest master, and no matter what I try, both the fibernet and a plain usb-uart converter fail to talk to the serial output. I can see bits being passed with the convert, but it's unintelligible.

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #141 on: April 02, 2021, 10:18:24 PM »
With min enabled you cannot use a normal Terminal, you need Teslaterm. It's a binary protocol. If you want to use a normal Terminal you need to switch off min save and restart. Then you should get a CLI with a usb serial cable.

With fibernet... You have a DHCP running? We have a fallback to a static IP but it can take some time.

« Last Edit: April 02, 2021, 10:27:26 PM by Netzpfuscher »

Offline TMaxElectronics

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Re: Next Gen DRSSTC
« Reply #142 on: April 03, 2021, 01:41:31 AM »
The fibernet will not initialize networking until it got its setup data from the UD3, so if there is no serial comms for whatever reason it will not even try to get an IP. Does the fibernet LED still remain solid red?
If the red LED goes out it means it got its setup data, once the blue LED is on it got an IP from the DHCP server. whenever there's comms with the UD3 it will flash the green LED and network stuff should flash the blue one if I remember correctly.

It also has the segger find protocol implemented so you can get its IP without needing to do a scan. The client is on this website (teslaterm has one built in too if you go to the IP box of the connect dialog, delete everything and press arrow down on your keyboard) https://www.segger.com/products/connectivity/emnet/technology/find-protocol/

Did you check the alarms on the UD3 with the cli on the USB port? The fibernet pushes some initialisation messages there

Offline acobaugh

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Re: Next Gen DRSSTC
« Reply #143 on: April 03, 2021, 02:48:13 AM »
Figured it out. I have the wrong XTAL. The BOM was generated from the Altium project, which calls out a 16MHz crystal (ABM8G-16.000MHZ-18-D2Y-T3). The project was configured to use a 24MHz XTAL. Changed that to 16MHz, and I'm off to the races. How critical is the XTAL frequency to the timing of other functions?

I guess that explains all the unusual behavior I've been seeing!

Next issue: my local dhcp server made a DHCPOFFER of 192.168.0.199, but the fibernet configured itself with 192.168.0.100. There was no DHCPACK. I can use .100 to talk to it just fine, so I can carry on with my testing. Maybe there's something it doesn't like about the response from dnsmaq?

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #144 on: April 03, 2021, 08:04:49 AM »
The 16Mhz shouldn't be an issue, the PLL locks to 64Mhz if you set the XTAL to 16Mhz in Psoc Creator. But then you need to make it every time I change something on this file in the GIT. A much better solution is to just remove the XTAL from the board. The firmware starts on the internal oscillator and try to start the XTAL, which fails and stays on the internal oscillator. The accuracy from the crystal isn't needed. The clock to the PC is synced with a PLL and can compensate for that. With the dev board version of the UD3 there is also no crystal.

The IP problem...
You can logon to the fibernet through the UD3. Just type "debug fn", then you get the CLI in the fibernet. To exit just press CTRL+C, to exit top or iotop in the fibernet just press "q".
"ifconfig" gives you some ip infos or let you set a ip (You loose connection with setting the IP over a IP connection ;) ) If you connect over USB to the UD3 you can see the DHCP messages from the fibernet without the problem of loosing the connection.

The ifconfig settings are not saved yet. I think we can make a config file on the SD card later.


« Last Edit: April 03, 2021, 08:07:38 AM by Netzpfuscher »

Offline Kevindk9

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Re: Next Gen DRSSTC
« Reply #145 on: October 21, 2021, 12:54:21 AM »
I built profdc9's SMD version for the dev kit, as you can see there were a few mistakes with the PCB I didn't notice until I received the board.. KiCad got the pinout wrong for the gate drive mosfets so I had to airwire them :'(


Anyway very long story short I got the driver working! I am unsure if i am using it right though, there is not much documentation for the interface.

There was also a lot of timing warnings when i built and programmed the board. Do i need an external crystal for this board? I also moved the gate drive pins around to fit the dev board layout. And is the correct order to build the "UARTldr_QFN", then program the board, then build the "UD3_QFN" and program the board?



As you can see in the photo im using a USB to TTL converter to connect to my laptop. I see the default baud rate set to 460800 but it looks like my computers USB can output a max of 128000. Do I change it in the PSoC creator to match my USB port?

I connect to Teslaterm in serial(simple) with 460800 baud, then change it to serial(MIN). I connect my coil with a low voltage on the bus and type in "Tune Prim" to run the tuning and get the suggested resonant frequency. I then change the start frequency to that frequency with 3 start cycles.  I turn "TR mode on" and adjust the on time and frequency which works fine. But when I try to play MIDI files it sounds bad and a lot of files that work on other members coils don't sound right. 

As im typing this i realize that it might be the UVLO triggering, im powering it at 17v because the on board regulators get way too hot at 24v im afraid they will die.  Could this be the problem, or is it a serial issue, or a problem with the midi files?  But i see in PSoC creator the UVLO doesn't have anything there so maybe thats not it.


Also what's the difference between UD3 node and Teslaterm? What is UD3 node for? only if you want to connect over ethernet? Do i need it to play SID music files? When i try running UD3-node.exe from https://github.com/malte0811/Teslaterm/releases/tag/v0.0.2  i get this error message.

 I also see this version of UD3 node from https://github.com/Netzpfuscher/UD3-node but i don't know what to do with those files, so i will stick with using Teslaterm on malte0811's github.

Sorry for all the questions and for rambling on, I want to get everything working and make sure im doing it right so i can write step by step instructions instructions for the wiki how to get it to work.
« Last Edit: October 21, 2021, 12:57:38 AM by Kevindk9 »

Offline Intra

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Re: Next Gen DRSSTC
« Reply #146 on: October 21, 2021, 01:27:29 PM »
There was also a lot of timing warnings when i built and programmed the board.
Not sure you can ignore this exactly warnings but I got a bunch warning with my setup and seems to it's okay. Try to skip it.

Do i need an external crystal for this board?
No.

Is the correct order to build the "UARTldr_QFN", then program the board, then build the "UD3_QFN" and program the board?
Yes. I built all then from PSoC Programmer upload "UARTldr_QFN" then upload "UD3_QFN".

As you can see in the photo im using a USB to TTL converter to connect to my laptop. I see the default baud rate set to 460800 but it looks like my computers USB can output a max of 128000. Do I change it in the PSoC creator to match my USB port?
Not sure I'm right person to answer on that, but I bet for no. What laptop model do you use?

im powering it at 17v because the on board regulators get way too hot at 24v im afraid they will die.  Could this be the problem
Yes. You should use 24v and some way cold down your board regulators or use another way to deliver regulated power to board. SMD regulators on high load without decent cooling system is in risk of overheating and damaging. For SMD there is a special boards classified as "one-sided aluminum PCB", which capable to be screwed up to heatsink it's aluminium side and pass heat to heatsink through the board's holes under component if maked, but this profdc9's SMD version did not made for that boards. So regulators and if will be high load on gate transistor then the gate transistors too should not be in SMD and should be in TO-220 or something and should be screwed up on decent size heatsinks through aluminium nitride ceramic substrate with Arctic MX-5 or another.

Do i need it to play SID music files?
I used Teslaterm to play SID files. If I remember right then you need drag and drop the SID file to Teslaterm to play it in SID mode and enable SID mode in Teslaterm


When i try running UD3-node.exe from https://github.com/malte0811/Teslaterm/releases/tag/v0.0.2  i get this error message.
I also see this version of UD3 node from https://github.com/Netzpfuscher/UD3-node but i don't know what to do with those files, so i will stick with using Teslaterm on malte0811's github.
Try this build https://drive.google.com/file/d/1pMMMhAq4u94cykIYivyjZuGO93iYG1C2/view

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #147 on: October 22, 2021, 07:03:26 AM »
Anyway very long story short I got the driver working! I am unsure if i am using it right though, there is not much documentation for the interface.

Cool  8)

There was also a lot of timing warnings when i built and programmed the board. Do i need an external crystal for this board? I also moved the gate drive pins around to fit the dev board layout. And is the correct order to build the "UARTldr_QFN", then program the board, then build the "UD3_QFN" and program the board?


Yes, all correct. You don't need a crystal.

As you can see in the photo im using a USB to TTL converter to connect to my laptop. I see the default baud rate set to 460800 but it looks like my computers USB can output a max of 128000. Do I change it in the PSoC creator to match my USB port?

You can change the baudrate with Teslaterm in settings. But 460800 is standard for all UD3 also for the Fibernet, its fast enough. You get no benefit of turning it up.

I connect to Teslaterm in serial(simple) with 460800 baud, then change it to serial(MIN). I connect my coil with a low voltage on the bus and type in "Tune Prim" to run the tuning and get the suggested resonant frequency. I then change the start frequency to that frequency with 3 start cycles.  I turn "TR mode on" and adjust the on time and frequency which works fine. But when I try to play MIDI files it sounds bad and a lot of files that work on other members coils don't sound right. 

Have you tested with a coil or a speaker on TP6? A speaker will not sound right on current modulation for debugging with a speaker it needs to be set to ontime modulation ("vol_mod"). For the coil, there is another parameter (you also can use ontime modulation on a coil) Whats the maximum current of your coil? There is a min current parameter, it's used for volume modulation "min_tr_current" maybe set it to a lower value. "set min_tr_current 50" It means that a playing note with low volume still produces a output of 50A (for linearization).

As im typing this i realize that it might be the UVLO triggering, im powering it at 17v because the on board regulators get way too hot at 24v im afraid they will die.  Could this be the problem, or is it a serial issue, or a problem with the midi files?  But i see in PSoC creator the UVLO doesn't have anything there so maybe thats not it.


You cannot set the UVLO in software it is simply a digital pin, you need to modify the external voltage divider. You can check if it was UVLO, with "alarms get" if there is a UVLO event in the alarm monitor or display the signal state with "signals". I bet it is the problem. No one has a problem with MIDI.

Also what's the difference between UD3 node and Teslaterm? What is UD3 node for? only if you want to connect over ethernet? Do i need it to play SID music files? When i try running UD3-node.exe from https://github.com/malte0811/Teslaterm/releases/tag/v0.0.2  i get this error message.

 I also see this version of UD3 node from https://github.com/Netzpfuscher/UD3-node but i don't know what to do with those files, so i will stick with using Teslaterm on malte0811's github.

If you use a new version of Teslaterm and Node... There is no difference in function. The node version is simply for a headless device like a Raspberry in the coil. The UI can then accessed with Chrome from another computer.

Please use only this: https://github.com/Netzpfuscher/Teslaterm/tree/new_versions
Binarys: https://github.com/Netzpfuscher/Teslaterm/actions/runs/1221655930

Other versions are not really supported anymore.

Sorry for all the questions and for rambling on, I want to get everything working and make sure im doing it right so i can write step by step instructions instructions for the wiki how to get it to work.

That would be great :)

Oh and please give me your complete changed pinout, then I put it into github. That makes updates easier. Now I put together the VMS branch, it is a super big improvement over the old MIDI synthesizer. But the master branch is also working. But it doesn't support drums and other instruments in MIDI mode.

If you want to try (I added the pinout of the screenshot):
https://github.com/Netzpfuscher/UD3/tree/vms_dev

The instrument file (you need actual Teslaterm: https://github.com/Netzpfuscher/Teslaterm/actions/runs/1221655930) just pull the file into the scope on teslaterm to flash it into the UD3:
https://github.com/TMaxElectronics/MidiStick_Firmware/releases/download/V2.0/VMS.example.mcf

If you update the UD3 over psoc creator the instruments are deleted you need to reflash the mcf file. If you update over bootloader it is preserved.
« Last Edit: October 22, 2021, 07:41:54 AM by Netzpfuscher »

Offline Kevindk9

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Re: Next Gen DRSSTC
« Reply #148 on: November 16, 2021, 01:16:07 AM »
Hey Netzpfuscher and Intra thanks for all the help, I think I've got everything working pretty good!

Camels_Run.sid - https://i.imgur.com/tz1zx1n.mp4

Here im trying the QCW function with a 15ms burst - https://i.imgur.com/LzcDnUn.mp4

This is the coil accidently going CW when I issued  "set synth 3" - https://i.imgur.com/v4iRskI.mp4

The pinout for the VMS-DEV branch is now correct for the dev board, so you don't need to change anything.  And here is a link to the fixed board at EasyEDA with an up to date BOM. https://easyeda.com/editor#id=0fd4d406188442ae8a9967b1bb865cb6|bf5b447561684507937553f8265b6cd4

I have a few small things im still working on, I want to include an ESP8266 or 32 on the board, i bought some modules but cant figure out how to interface with them.  I should choose MIN over UDP, correct? And i shouldn't need to modify any code?

I cant get the pulse width longer than 400us in TR mode. I've tried editing the range in psoc creator, and some of the GUI files for TeslaTerm, nothing seems to work and i don't know where to look.  Another suggestion i have is a "one shot" button for TR and QCW mode.

And finally, for tuning, I run "tune_Prim" and i get a graph. Say my secondary resonance is 55khz, I should try to get my primary resonance in the graph at ~50khz? Then have the auto tune start at 56khz?

Thanks again!

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #149 on: November 16, 2021, 07:09:35 AM »
Camels_Run.sid - https://i.imgur.com/tz1zx1n.mp4

Here im trying the QCW function with a 15ms burst - https://i.imgur.com/LzcDnUn.mp4

Cool, good progress

This is the coil accidently going CW when I issued  "set synth 3" - https://i.imgur.com/v4iRskI.mp4

Oh, yes there was something. Check the newest commit (I also switched VMS_Dev to master) I disabled QCW synth for now. With the VMS it was intended to make the QCW MIDI synth also block based configurable but I had not time to do it yet. So I disabled the QCW synth for safety reasons now.

I have a few small things im still working on, I want to include an ESP8266 or 32 on the board, i bought some modules but cant figure out how to interface with them.  I should choose MIN over UDP, correct? And i shouldn't need to modify any code?

Not right... The ESP32 project is obsolete and not working anymore. https://github.com/TMaxElectronics/UD3-Fibernet-Firmware <--Essentially we need to port this or port it in parts. MIN UDP is very simple, you get a UDP packet from teslaterm and you can put it 1:1 to the UART on the ESP. For receiving you need to implement parts of the MIN UART receive function to detect frame start and end (you can take a look at the fibernet code) und put a MIN frame 1:1 in a UDP packet and send it to Teslaterm.

I cant get the pulse width longer than 400us in TR mode. I've tried editing the range in psoc creator, and some of the GUI files for TeslaTerm, nothing seems to work and i don't know where to look.  Another suggestion i have is a "one shot" button for TR and QCW mode.

The 400us is only a limit in Teslaterm. The UD3 allows 10000us have you set "max_tr_pw" also to a higher value? For the Teslaterm slider I need to take a look in the code. As workaround you can set a higher pw directly in the console with "set pw 1000" or so

And finally, for tuning, I run "tune_Prim" and i get a graph. Say my secondary resonance is 55khz, I should try to get my primary resonance in the graph at ~50khz? Then have the auto tune start at 56khz?
If you run tune prim you get the primary resonance frequency. For best results you should remove the secondary and make a run at low voltage (like 60V or so) to change the frequency you only can change the tap on the primary. There is no way to change the frequency in software.


Offline dbach

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Re: Next Gen DRSSTC
« Reply #150 on: November 21, 2021, 06:16:06 PM »
Hello,
Quote
The UD3s are playing the frames by the timecode. To get it over multiple control computers working the master sends his time to all slaves every 500ms. The slaves are calculating a offset (which get smoothed to get rid of latency jitter) to their time and are sending the corrected time to their UD3 which is syncing to this time (the master time). I need to measure the timing differences but it sounds good.

I had some confusion over this, is there one master computer using the others as slaves, and then each slave is paired with a ud3? Or is one computer with a master ud3 using the others as salves (with the other computers being used as aux USB ports?)

Thanks so much! The ud3 looks amazing




Offline Intra

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Re: Next Gen DRSSTC
« Reply #151 on: November 24, 2021, 02:32:28 PM »
With the VMS it was intended to make the QCW MIDI synth also block based configurable but I had not time to do it yet. So I disabled the QCW synth for safety reasons now.
Which commit is last safe for using QCW synth? This one? https://github.com/Netzpfuscher/UD3/commit/cd4d18a4d5818ee01e0f0742d89642772fda708a

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #152 on: November 25, 2021, 07:09:29 AM »
Hello,
Quote
The UD3s are playing the frames by the timecode. To get it over multiple control computers working the master sends his time to all slaves every 500ms. The slaves are calculating a offset (which get smoothed to get rid of latency jitter) to their time and are sending the corrected time to their UD3 which is syncing to this time (the master time). I need to measure the timing differences but it sounds good.

I had some confusion over this, is there one master computer using the others as slaves, and then each slave is paired with a ud3? Or is one computer with a master ud3 using the others as salves (with the other computers being used as aux USB ports?)

Thanks so much! The ud3 looks amazing

Problem is, that I hadn't time to implement it in the new Teslaterm version.

-One UD3 is connected to one instance of Teslaterm it syncs its time with a PLL to the computer time
-One Master Teslaterm syncs the time to all slave Teslaterms
-The Master Teslaterm plays the SID and taggs the frames with time and transmit it to slaves.

Quote
Which commit is last safe for using QCW synth? This one? https://github.com/Netzpfuscher/UD3/commit/cd4d18a4d5818ee01e0f0742d89642772fda708a

Seems so. All before VMS I think.


Offline Intra

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Re: Next Gen DRSSTC
« Reply #153 on: November 26, 2021, 03:52:08 PM »
Quote
Which commit is last safe for using QCW synth? This one? https://github.com/Netzpfuscher/UD3/commit/cd4d18a4d5818ee01e0f0742d89642772fda708a

Seems so. All before VMS I think.

Wouldn't it be inconvenient if I bother you to help with build errors for a QFN project from a commit https://github.com/Netzpfuscher/UD3/commit/cd4d18a4d5818ee01e0f0742d89642772fda708a ?

Offline Netzpfuscher

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Re: Next Gen DRSSTC
« Reply #154 on: November 29, 2021, 12:15:12 PM »

Offline Intra

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Re: Next Gen DRSSTC
« Reply #155 on: November 29, 2021, 03:15:23 PM »

 


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post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
plasma
November 28, 2021, 05:32:16 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 28, 2021, 04:28:33 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ItsChloeUwU
November 28, 2021, 02:19:00 AM
post Re: Where to buy DIY or home made capacitor book(s)?
[Capacitor Banks]
huntergroundmind
November 28, 2021, 01:58:12 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 28, 2021, 12:53:27 AM
post Re: Driverless SSTC
[Solid State Tesla Coils (SSTC)]
davekni
November 28, 2021, 12:32:09 AM
post Re: Help on my "first" SSTC (LabCoatz SSTC 2.0)- Popping transistors
[Solid State Tesla Coils (SSTC)]
davekni
November 28, 2021, 12:16:04 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ItsChloeUwU
November 27, 2021, 11:42:08 PM
post Re: Hi! 811 A tesa coil
[Vacuum Tube Tesla Coils (VTTC)]
304er
November 27, 2021, 11:32:12 PM
post Re: Hi! 811 A tesa coil
[Vacuum Tube Tesla Coils (VTTC)]
jpvvv123
November 27, 2021, 11:09:43 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
paulj
November 27, 2021, 10:06:41 PM
post Re: SG3525 push pull snubber calculation
[Transformer (Ferrite Core)]
PowerTech
November 27, 2021, 09:40:34 PM
post Re: SG3525 push pull snubber calculation
[Transformer (Ferrite Core)]
davekni
November 27, 2021, 08:51:05 PM
post Re: Infrastructure and Architecture
[General Chat]
Da_Stier
November 27, 2021, 08:09:50 PM
post Re: SG3525 push pull snubber calculation
[Transformer (Ferrite Core)]
PowerTech
November 27, 2021, 06:00:42 PM
post Re: Someone built Big TC
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
November 27, 2021, 05:04:46 PM
post Re: Someone built Big TC
[Spark Gap Tesla Coils (SGTC)]
304er
November 27, 2021, 04:45:14 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General Chat]
Mads Barnkob
November 27, 2021, 07:59:37 AM
post Re: Contest of motor slowness, or lowness of voltage?
[Science, Research and News In Other Fields Than Electronics]
Mads Barnkob
November 27, 2021, 07:52:59 AM
post Re: FPS1000HD unboxing and first impression
[High Speed Filming]
Mads Barnkob
November 27, 2021, 07:51:01 AM
post Re: Help on my "first" SSTC (LabCoatz SSTC 2.0)- Popping transistors
[Solid State Tesla Coils (SSTC)]
Mads Barnkob
November 27, 2021, 07:47:23 AM
post Re: Infrastructure and Architecture
[General Chat]
Mads Barnkob
November 27, 2021, 07:37:57 AM
post Re: Someone built Big TC
[Spark Gap Tesla Coils (SGTC)]
Mads Barnkob
November 27, 2021, 07:21:43 AM
post Re: BrOdin coil - High power Big sparks!
[Dual Resonant Solid State Tesla coils (DRSSTC)]
patracy
November 27, 2021, 06:06:59 AM
post Re: Someone built Big TC
[Spark Gap Tesla Coils (SGTC)]
304er
November 27, 2021, 05:27:27 AM
post Re: Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
304er
November 27, 2021, 03:19:55 AM
post Re: Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
304er
November 27, 2021, 02:31:46 AM
post Re: Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
304er
November 27, 2021, 02:22:20 AM
post Driverless SSTC
[Solid State Tesla Coils (SSTC)]
bismallah
November 26, 2021, 11:59:27 PM
post Infrastructure and Architecture
[General Chat]
Da_Stier
November 26, 2021, 11:27:47 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
klugesmith
November 26, 2021, 11:17:55 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
November 26, 2021, 08:24:39 PM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 26, 2021, 07:48:07 PM
post Help on my "first" SSTC (LabCoatz SSTC 2.0)- Popping transistors
[Solid State Tesla Coils (SSTC)]
TiagoBS
November 26, 2021, 07:44:25 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
davekni
November 26, 2021, 06:58:16 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
plasma
November 26, 2021, 05:40:37 PM
post Re: "Exploding" water
[Capacitor Banks]
MRMILSTAR
November 26, 2021, 04:39:07 PM
post Re: Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
November 26, 2021, 04:31:20 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Intra
November 26, 2021, 03:52:08 PM
post Re: "Exploding" water
[Capacitor Banks]
johnf
November 26, 2021, 09:17:07 AM
post Re: Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
paulj
November 26, 2021, 08:45:34 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ItsChloeUwU
November 26, 2021, 06:31:56 AM
post Kind of old single piece of glass plate capacitor
[Spark Gap Tesla Coils (SGTC)]
304er
November 26, 2021, 05:59:58 AM
post Re: FPS1000HD unboxing and first impression
[High Speed Filming]
Kamui
November 26, 2021, 05:12:14 AM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
304er
November 26, 2021, 05:07:10 AM
post Please Help Me Find Datasheed Of IGBT
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ItsChloeUwU
November 26, 2021, 04:08:22 AM
post Re: Contest of motor slowness, or lowness of voltage?
[Science, Research and News In Other Fields Than Electronics]
davekni
November 25, 2021, 07:35:57 PM
post Re: 13.56MHz ISM frequency HFSSTC (or perhaps HFDRSSTC)
[Solid State Tesla Coils (SSTC)]
davekni
November 25, 2021, 07:28:52 PM
post Re: Practical limitations in size for Marx or CW
[Voltage Multipliers]
davekni
November 25, 2021, 07:22:32 PM
post Re: "Exploding" water
[Capacitor Banks]
304er
November 25, 2021, 07:01:03 PM
post Practical limitations in size for Marx or CW
[Voltage Multipliers]
abstruse1
November 25, 2021, 05:58:34 PM
post Gas Discharge Tubes for Marx Generator?
[Voltage Multipliers]
abstruse1
November 25, 2021, 05:55:53 PM
post Contest of motor slowness, or lowness of voltage?
[Science, Research and News In Other Fields Than Electronics]
klugesmith
November 25, 2021, 05:50:35 PM
post "Exploding" water
[Capacitor Banks]
MRMILSTAR
November 25, 2021, 04:48:10 PM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
paulj
November 25, 2021, 10:52:44 AM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Netzpfuscher
November 25, 2021, 07:09:29 AM
post Re: 13.56MHz ISM frequency HFSSTC (or perhaps HFDRSSTC)
[Solid State Tesla Coils (SSTC)]
Steve Ward
November 25, 2021, 06:58:56 AM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
davekni
November 25, 2021, 05:51:03 AM
post Re: Some Starting Questions About My New DRSSTC ???
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 25, 2021, 05:13:17 AM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
MRMILSTAR
November 25, 2021, 04:50:11 AM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
davekni
November 25, 2021, 02:25:10 AM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
304er
November 25, 2021, 12:42:59 AM
post Re: 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
klugesmith
November 24, 2021, 11:03:52 PM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
MRMILSTAR
November 24, 2021, 10:00:47 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Intra
November 24, 2021, 02:32:28 PM
post 60hz synchronous motor on 50hz?
[Spark Gap Tesla Coils (SGTC)]
paulj
November 24, 2021, 08:28:50 AM

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