Author Topic: Teardown of General Electrics 3 Million Volt Lightning Laboratory  (Read 1722 times)

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Jeff Behary from the http://www.electrotherapymuseum.com/ is on a insane quest to teardown and save the old General Electric 3MV Test Laboratory, that features a 3 stage transformer stepup assembly into a huge Marx generator.

With Jeff's permission I am reposting selected pictures from his daily uploads as they make progress. Please consider helping Jeff by giving him a small donation (thread here: https://highvoltageforum.net/index.php?topic=2349.msg17196;topicseen#new ) to support opening a museum with this equipment in it!

Jeff's own words about this project:
Quote
As most of you know, I'm in the middle of a gigantic rescue mission saving General Electric's last standing high voltage research laboratory.  It was started in 1928 and was completed in 1949.  The apparatus inside weigh over 150,000 pounds and I am transporting it all to Florida to launch my museum into something official and of epic proportions.  I'm working with the best attorney in S FL to form the corporation and 501(c)3 nonprofit status, and have invested a lot of money upfront into this project personally to make it happen.  If anyone can spare a few dollars it would be greatly appreciated...
This history is priceless on many levels, and marked an epoch in high voltage engineering and testing... it was the foremost research bringing us an understanding of how to protect the entire electrical grid from lightning strikes, lightning interference, and safety - and was the leading catalyst of EMP (Electro-Magnetic Pulse) research that was later used by our military. 
The scope of this equipment - which is still perfectly viable and able to be put into use again - ranges from material testing to defense work.  The library, which I rescued in hundreds of trash bags, contains thousands of books and research papers that were never formally published:  On many levels, this was history worth going out of my way to help save. 
Fortunately the owner of the land has generously agreed to donate it for a tax write-off for his company, but even accepting the items for free is an expense task with regard to the logistics of everything.  Just off-loading this gear takes a 20-ton crane rental...  For an idea of scope and size, I will post some additional photos in the comments. 
Thank you for your support.

Pictures from the first visit on January 14th 2023


























« Last Edit: February 06, 2023, 11:01:42 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #1 on: February 06, 2023, 08:46:52 PM »
February 3rd 2023

Quote
Most of the building is gone but here is what is packed so far!  Time to fire up the crane and head to the HV lab! This section of building is missing most of the building... and wow. There must have been 100 rack cabinets filled with giant variacs. It was unreal...emphasis on the "was" part.

To understand WAS, check out the last picture of a metal pile :(















« Last Edit: February 06, 2023, 09:17:56 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #2 on: February 06, 2023, 08:48:18 PM »
Ca 250 pound spark gap adjustment with 2 belts over 80 ft long each...













« Last Edit: February 06, 2023, 09:18:14 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #3 on: February 06, 2023, 08:52:03 PM »
The motor generator is in the next room and outputs of xfmrs have heavy coupled windings on the HV leg to power the next... so toroid is half of 350kV and lower HV terminal is half of 350kV-2300V and the other half is grounded to each case, floating in 2 and 3...

they don't make resistors like they used to! Half inch bolts to wire these in place! 66" long mounted to 2" diameter bakelite tubes with 1/4" walls...









« Last Edit: February 06, 2023, 09:18:27 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #4 on: February 06, 2023, 08:56:53 PM »
Slowly dismantling a 4 pole 600A 3500V knife switch...!  2 million watts!














+

The moveable spark gap - 3/4" wall bakelite tubing on a bearing of glass marbles









« Last Edit: February 06, 2023, 09:19:45 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #5 on: February 06, 2023, 09:06:04 PM »
First two capacitor banks down... 400 pounds each without insulators

Note the capacitors can all be remotely shorted via the belt assembly that also adjusts the spark gaps! Very ingenious.

















« Last Edit: February 06, 2023, 09:20:05 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #6 on: February 06, 2023, 09:07:56 PM »
February 4th 2023

Beginning of another day disassembling













« Last Edit: February 06, 2023, 09:20:31 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #7 on: February 06, 2023, 09:11:25 PM »
Finish disassembling impulse generator tomorrow, some more photos of the dark room, some fuse panels, and the modern 13200V-2300V 1000kVA dry type transformer used to power the cascade transformers post rotary generator days...

20 turns per layer 48 layers = 960 turns S:P ratio 5.5 so secondary must have 174.5 turns for the 2300V winding.























« Last Edit: February 06, 2023, 09:21:12 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #8 on: February 06, 2023, 09:13:43 PM »
Packing up the Easter eggs and one of many 13800V 1200A disconnects nearby....















« Last Edit: February 06, 2023, 09:22:06 PM by Mads Barnkob »
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #9 on: February 06, 2023, 09:17:02 PM »
coupling capacitors and spark gap adjustment....





























https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #10 on: February 06, 2023, 09:27:37 PM »
Its DOWN!  Ca. 20,000 pounds!  Tomorrow we wrap up packing and disassemble the 1 meter sphere gap voltmeter...



















https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #11 on: February 06, 2023, 09:29:13 PM »
February 6th 2023

















https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline MRMILSTAR

  • High Voltage Senior
  • *****
  • Posts: 517
  • Karma: +18/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #12 on: February 06, 2023, 09:57:44 PM »
Wow! So many goodies! I wonder if he has any plans to re-erect this monster? If so, where? It just makes me sick to see that pile of scrap. One wonders what good stuff is in that pile.
Steve White
Cedar Rapids, Iowa
Retired electrical engineer

Offline Avenger

  • High Voltage Enthusiast
  • *
  • Posts: 19
  • Karma: +3/-0
    • View Profile
    • Mr Flybacker
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #13 on: February 07, 2023, 02:33:52 PM »
Epic! Marx was carefully dismantled, the parts are in good condition. In Russia, a similar high voltage laboratory in Saint Petersburg was simply broken to hell.
« Last Edit: February 07, 2023, 06:14:53 PM by Avenger »
All ingenious is simple

Offline TizianoBll

  • High Voltage Enthusiast
  • *
  • Posts: 11
  • Karma: +0/-0
    • View Profile
    • My Website
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #14 on: February 07, 2023, 04:50:10 PM »
That's a lot of work!

Thanks for all the photos!

Offline rikkitikkitavi

  • High Voltage Technician
  • ***
  • Posts: 122
  • Karma: +2/-0
    • View Profile
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #15 on: February 07, 2023, 05:15:53 PM »
Oh.My.Gosh.
All those Variacs. Mr Variacs heart bleeds.
 I have to arrange Google Pay for donation.
« Last Edit: February 07, 2023, 05:17:56 PM by rikkitikkitavi »
A man can not have too many variacs

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2220
  • Karma: +68/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #16 on: February 07, 2023, 09:14:32 PM »
Epic! Marx was carefully dismantled, the parts are in good condition. In Russia, a similar high voltage laboratory in Saint Petersburg was simply broken to hell.

Was it this one? https://highvoltageforum.net/index.php?topic=555.0
https://kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics
https://www.youtube.com/KaizerPowerElectronicsDk60/join - Please consider supporting the forum, websites and youtube channel!

Offline Avenger

  • High Voltage Enthusiast
  • *
  • Posts: 19
  • Karma: +3/-0
    • View Profile
    • Mr Flybacker
All ingenious is simple

Offline abstruse1

  • High Voltage Technician
  • ***
  • Posts: 131
  • Karma: +1/-0
    • View Profile
Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #18 on: March 06, 2023, 03:41:52 PM »
A suggestion:  give memorabilia items for contributions in different amounts, e.g. some small nameplate for $50, insulator for $100, etc.

I would contribute!
Abstruse1
   Been working with electricity for 60 years and still getting a tingle!

High Voltage Forum

Re: Teardown of General Electrics 3 Million Volt Lightning Laboratory
« Reply #18 on: March 06, 2023, 03:41:52 PM »

 


* Recent Topics and Posts

post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
Today at 04:02:35 PM
post New user hoping not to destroy too many IGBTs in 2024
[General Chat]
ae7b
Today at 06:53:52 AM
post Re: Smoothing capacitor questions on UD 2.7C
[Beginners]
Keybored
Today at 12:25:37 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
davekni
December 09, 2023, 09:47:04 PM
post Re: Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
davekni
December 09, 2023, 09:03:11 PM
post Re: Basement Laboratory Renovation
[Laboratories, Equipment and Tools]
Mads Barnkob
December 09, 2023, 09:36:26 AM
post Re: Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
Lucasww
December 09, 2023, 08:57:15 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
bobfrancis1980
December 09, 2023, 04:01:59 AM
post Re: Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
davekni
December 09, 2023, 02:11:48 AM
post Re: Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
Lucasww
December 09, 2023, 01:25:03 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
davekni
December 09, 2023, 12:51:37 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
bobfrancis1980
December 08, 2023, 10:38:26 PM
post Re: GDT magnetizing current
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
December 08, 2023, 09:53:45 PM
post Re: Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
davekni
December 08, 2023, 08:55:43 PM
post Re: Smoothing capacitor questions on UD 2.7C
[Beginners]
davekni
December 08, 2023, 08:23:56 PM
post GDT magnetizing current
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
December 08, 2023, 06:58:25 AM
post Re: Smoothing capacitor questions on UD 2.7C
[Beginners]
Keybored
December 08, 2023, 01:51:32 AM
post Small SSTC killing gate drivers
[Solid State Tesla Coils (SSTC)]
Lucasww
December 07, 2023, 11:34:00 PM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
davekni
December 07, 2023, 04:18:45 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
bobfrancis1980
December 07, 2023, 01:13:07 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
bobfrancis1980
December 07, 2023, 12:14:38 AM
post Smoothing capacitor questions on UD 2.7C
[Beginners]
Keybored
December 06, 2023, 11:42:18 PM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
Twospoons
December 06, 2023, 10:45:55 PM
post Re: P5104 40kV 20MHz probes
[General Chat]
Mads Barnkob
December 06, 2023, 06:59:10 PM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
December 06, 2023, 06:14:30 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
davekni
December 06, 2023, 06:00:58 AM
post Re: Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
davekni
December 06, 2023, 05:57:09 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
December 06, 2023, 04:57:17 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
davekni
December 06, 2023, 04:31:42 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
December 06, 2023, 03:55:04 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
davekni
December 06, 2023, 03:31:04 AM
post Has anyone tried using series IGBT to control Marx gen firing rate?
[Voltage Multipliers]
bobfrancis1980
December 06, 2023, 12:46:43 AM
post Re: Is the UD2.7C under voltage lock out basically worthless?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
December 05, 2023, 10:15:22 PM
post Re: Is the UD2.7C under voltage lock out basically worthless?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
futurist
December 05, 2023, 02:28:17 PM
post Re: 2 Layer primary coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
December 05, 2023, 09:28:30 AM
post 2 Layer primary coil
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
December 05, 2023, 05:26:18 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
December 04, 2023, 05:06:19 AM
post Re: diy High voltage ignition coil
[Transformer (Ferrite Core)]
tazea
December 03, 2023, 11:14:29 PM
post Re: Segmented Primary Coil
[Spark Gap Tesla Coils (SGTC)]
Hysteresis
December 03, 2023, 02:29:50 PM
post Re: Primary to secondary arc flashover, how close can you keep the secondary?
[Solid State Tesla Coils (SSTC)]
nzoomed
December 03, 2023, 10:24:06 AM
post Re: P5104 40kV 20MHz probes
[General Chat]
FPS
December 03, 2023, 07:45:42 AM
post Re: diy High voltage ignition coil
[Transformer (Ferrite Core)]
ZakW
December 03, 2023, 07:19:21 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
December 03, 2023, 06:50:36 AM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
December 03, 2023, 03:31:21 AM
post Re: diy High voltage ignition coil
[Transformer (Ferrite Core)]
davekni
December 03, 2023, 02:44:37 AM
post Re: Segmented Primary Coil
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
December 02, 2023, 09:36:17 PM
post Re: Segmented Primary Coil
[Spark Gap Tesla Coils (SGTC)]
Mads Barnkob
December 02, 2023, 08:58:37 PM
post Re: P5104 40kV 20MHz probes
[General Chat]
Mads Barnkob
December 02, 2023, 08:55:59 PM
post Segmented Primary Coil
[Spark Gap Tesla Coils (SGTC)]
tbbrune
December 02, 2023, 08:32:47 PM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
davekni
December 02, 2023, 07:28:16 PM
post Re: P5104 40kV 20MHz probes
[General Chat]
alan sailer
December 02, 2023, 07:13:21 PM
post Chain reactions
[High Speed Filming]
haversin
December 02, 2023, 06:20:03 PM
post Re: Try to build the 4MHz ClassE SSTC
[Solid State Tesla Coils (SSTC)]
NyaaX_X
December 02, 2023, 11:44:34 AM
post P5104 40kV 20MHz probes
[General Chat]
FPS
December 02, 2023, 10:15:01 AM
post Re: Problem with output with fullbridge sstc
[Solid State Tesla Coils (SSTC)]
Benjamin_collier
December 02, 2023, 01:19:40 AM
post diy High voltage ignition coil
[Transformer (Ferrite Core)]
tazea
December 01, 2023, 10:45:25 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
December 01, 2023, 08:48:38 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
December 01, 2023, 02:03:32 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
December 01, 2023, 06:14:43 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
December 01, 2023, 05:07:24 AM
post Re: Simple problem with JavaTC + Best connectors for quick swapping IGBTS
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
December 01, 2023, 02:07:41 AM
post Re: Simple problem with JavaTC + Best connectors for quick swapping IGBTS
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ZakW
December 01, 2023, 02:00:20 AM
post Re: Is the UD2.7C under voltage lock out basically worthless?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
December 01, 2023, 12:20:38 AM
post Is the UD2.7C under voltage lock out basically worthless?
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
November 30, 2023, 11:14:16 PM
post Re: Simple problem with JavaTC + Best connectors for quick swapping IGBTS
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 30, 2023, 10:05:26 PM
post Re: Feedback current transformer doesn't work
[Solid State Tesla Coils (SSTC)]
davekni
November 30, 2023, 10:02:33 PM
post Simple problem with JavaTC + Best connectors for quick swapping IGBTS
[Dual Resonant Solid State Tesla coils (DRSSTC)]
yourboi
November 30, 2023, 09:23:53 PM
post Re: Feedback current transformer doesn't work
[Solid State Tesla Coils (SSTC)]
TiagoBS
November 30, 2023, 07:38:21 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
November 30, 2023, 06:10:34 PM
post Re: Primary to secondary arc flashover, how close can you keep the secondary?
[Solid State Tesla Coils (SSTC)]
Benjamin Lockhart
November 30, 2023, 06:21:15 AM
post Re: Primary to secondary arc flashover, how close can you keep the secondary?
[Solid State Tesla Coils (SSTC)]
davekni
November 30, 2023, 06:01:17 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 30, 2023, 05:50:53 AM
post Re: Feedback current transformer doesn't work
[Solid State Tesla Coils (SSTC)]
davekni
November 30, 2023, 05:34:32 AM
post Small Coil Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
November 30, 2023, 02:23:01 AM
post Re: GU-81 vs. GU-81M
[Vacuum Tube Tesla Coils (VTTC)]
thehay95
November 30, 2023, 12:40:36 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
thedoc298
November 30, 2023, 12:38:37 AM
post Primary to secondary arc flashover, how close can you keep the secondary?
[Solid State Tesla Coils (SSTC)]
nzoomed
November 30, 2023, 12:26:10 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
November 30, 2023, 12:03:30 AM
post Re: Feedback current transformer doesn't work
[Solid State Tesla Coils (SSTC)]
TiagoBS
November 29, 2023, 08:12:27 PM
post Re: Benjamin's DRSSTC3
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 29, 2023, 06:32:03 AM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
November 27, 2023, 03:12:43 PM
post Benjamin's DRSSTC3
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
November 27, 2023, 09:07:43 AM
post Re: Feedback on new freewheeling driver schematic
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 27, 2023, 12:27:13 AM
post Re: Feedback on new freewheeling driver schematic
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FilipŠebík
November 26, 2023, 11:18:29 PM
post First part of my bipolar Tesla coil project and future improvements
[Spark Gap Tesla Coils (SGTC)]
MechatEng2023
November 26, 2023, 10:07:55 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 26, 2023, 09:57:50 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
November 26, 2023, 08:04:56 PM
post Re: Choosing a Capacitor for a 30hz Marx generator
[Voltage Multipliers]
bobfrancis1980
November 26, 2023, 07:53:47 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
thedoc298
November 26, 2023, 05:14:20 AM
post Re: WTS/WTT: T520-2 - Micrometals core, MO, USA
[Sell / Buy / Trade]
davekni
November 25, 2023, 08:04:05 PM
post Re: Single Photon Dual Slit Demonstartion
[Detection, Counting and Measurements]
alan sailer
November 25, 2023, 07:16:02 PM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils (DRSSTC)]
coilerer
November 25, 2023, 01:05:56 PM
post Re: WTS/WTT: T520-2 - Micrometals core, MO, USA
[Sell / Buy / Trade]
coilerer
November 25, 2023, 01:02:05 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
November 25, 2023, 04:29:13 AM
post Re: Choosing a Capacitor for a 30hz Marx generator
[Voltage Multipliers]
davekni
November 25, 2023, 04:15:02 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic Circuits]
klugesmith
November 24, 2023, 11:57:26 PM
post Re: Single Photon Dual Slit Demonstartion
[Detection, Counting and Measurements]
klugesmith
November 24, 2023, 11:26:58 PM
post Re: DRSSTC low power testing killing IGBTs
[Dual Resonant Solid State Tesla coils (DRSSTC)]
FonziDaytona
November 24, 2023, 11:26:04 PM
post Re: Choosing a Capacitor for a 30hz Marx generator
[Voltage Multipliers]
bobfrancis1980
November 24, 2023, 10:08:43 PM
post ABB DCS400 - 900A / 522kW DC Motor Drive Teardown
[Electronic Circuits]
Mads Barnkob
November 24, 2023, 07:33:46 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 
SimplePortal 2.3.6 © 2008-2014, SimplePortal