Author Topic: Voltage Multipliers keep destroying drivers  (Read 1275 times)

Offline Andy Kay

  • High Voltage Enthusiast
  • *
  • Posts: 15
  • Karma: +0/-0
    • View Profile
Voltage Multipliers keep destroying drivers
« on: June 06, 2018, 08:13:56 PM »
I've been playing with Cockcroft Walton and Marx configurations, and I've been running them from a 12V car battery in order to avoid getting high voltage spikes on my mains electrical system. I've used various kinds of devices for stepping up the 12V to provide a feed for the multiplier, such as CCFL inverters, ionizer circuits, and SS Tesla coil drivers, and every time the system works for a short time before the drive stage for the transformer primary coil burns out. Is there a standard way of dealing with this problem?

Offline FilipŠebík

  • High Voltage Enthusiast
  • *
  • Posts: 34
  • Karma: +1/-0
    • View Profile
Re: Voltage Multipliers keep destroying drivers
« Reply #1 on: June 07, 2018, 04:43:07 PM »
Limit current or use 1:1 transformer as a protection for HV spikeback (if that's a thing, duh)

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1159
  • Karma: +17/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Voltage Multipliers keep destroying drivers
« Reply #2 on: June 08, 2018, 09:14:22 AM »
It sounds like you have problems with either inductive kickback/EMF, lack coupling capacitor on the primary side of the transformer to avoid DC offset or you are saturating the transformer from high load and got no protection in the driver against transformer saturation.
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline MRMILSTAR

  • High Voltage Experimenter
  • **
  • Posts: 84
  • Karma: +3/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: Voltage Multipliers keep destroying drivers
« Reply #3 on: June 15, 2019, 05:19:35 PM »
I built one of those Chinese 20-stage Marx generators that you see on E-Bay and was experiencing a similar problem. It would occasionally blow the ZVS driver which was driving the flyback transformer. The problem stumped me for a while. Then one day I noticed that when it fired I could see a dim arc jumping across the resistor isolating the flyback coil from the Marx generator first stage. Some of the discharge energy was feeding back into the flyback coil which then fed back into the ZVS driver. I replaced the 2 resistors with higher voltage units and the problem was solved. You have to check those Chinese designs.
« Last Edit: June 16, 2019, 05:25:09 PM by MRMILSTAR »

Offline MRMILSTAR

  • High Voltage Experimenter
  • **
  • Posts: 84
  • Karma: +3/-0
  • Cedar Rapids, Iowa
    • View Profile
Re: Voltage Multipliers keep destroying drivers
« Reply #4 on: September 10, 2019, 10:02:25 PM »
One potential fix is to place a suitably-rated varistor across the transformer primary.

Offline johnf

  • High Voltage Enthusiast
  • *
  • Posts: 26
  • Karma: +0/-0
    • View Profile
Re: Voltage Multipliers keep destroying drivers
« Reply #5 on: October 10, 2019, 08:40:40 AM »
hopefully your transformer has an electrostatic shield between primary and secondary to cancel capacitive coupling primary to secondary especially important if you have flashovers as you will impinge your output voltage as a pulse into your primary circuit
then TVS diodes acroos the drive devices set just below their max voltage and tvs 20 volt diodes gate to source / base to emitter

ignore the above and keep feeding the silicon gods your expensive sacrifices

High Voltage Forum

Re: Voltage Multipliers keep destroying drivers
« Reply #5 on: October 10, 2019, 08:40:40 AM »

 


* Recent Topics and Posts

post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
davekni
Today at 06:26:58 AM
post Re: Measuring permanent magnets
[Electronic circuits]
klugesmith
Today at 03:02:45 AM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
babass
November 16, 2019, 09:20:41 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
Mads Barnkob
November 16, 2019, 08:03:58 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
babass
November 16, 2019, 07:27:30 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
davekni
November 16, 2019, 06:55:16 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
thedoc298
November 16, 2019, 05:19:05 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
babass
November 16, 2019, 01:33:17 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
davekni
November 16, 2019, 04:56:44 AM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
davekni
November 16, 2019, 04:13:35 AM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
babass
November 16, 2019, 01:21:10 AM
post Re: coil Tesla in the space
[Dual Resonant Solid State Tesla coils]
Alexis
November 15, 2019, 08:14:00 PM
post Re: coil Tesla in the space
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
November 15, 2019, 05:40:33 PM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
jturnerkc
November 15, 2019, 03:59:48 PM
post coil Tesla in the space
[Dual Resonant Solid State Tesla coils]
Alexis
November 15, 2019, 03:35:38 PM
post Re: SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
davekni
November 15, 2019, 05:18:19 AM
post SSTC low voltage at gate transformer and heating drivers
[Solid state Tesla coils]
babass
November 14, 2019, 05:40:58 PM
post Re: Welcome new members, come say hello and tell a little about yourself :)
[General chatting]
babass
November 14, 2019, 05:13:01 PM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
T3sl4co1l
November 14, 2019, 01:50:30 PM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
Uspring
November 14, 2019, 11:45:15 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
davekni
November 14, 2019, 05:35:19 AM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
davekni
November 14, 2019, 05:25:57 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
davekni
November 14, 2019, 04:49:57 AM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
davekni
November 14, 2019, 04:32:50 AM
post Re: How to measure voltage output of AC flyback transformer
[Transformer (ferrite core)]
profdc9
November 13, 2019, 06:00:58 PM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
profdc9
November 13, 2019, 05:51:27 PM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
Mads Barnkob
November 13, 2019, 05:04:30 PM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
jturnerkc
November 13, 2019, 03:57:53 PM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
bozidar
November 13, 2019, 09:08:45 AM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
shrad
November 13, 2019, 08:24:10 AM
post Re: New to tesla coils, some questions before I start building a SSTC
[Solid state Tesla coils]
Weston
November 13, 2019, 07:06:38 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
davekni
November 13, 2019, 06:36:57 AM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
davekni
November 13, 2019, 06:01:47 AM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
davekni
November 13, 2019, 05:40:55 AM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
klugesmith
November 13, 2019, 01:27:42 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
bozidar
November 13, 2019, 12:35:34 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
dexter
November 12, 2019, 11:08:44 PM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
jturnerkc
November 12, 2019, 09:20:34 PM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
profdc9
November 12, 2019, 08:24:38 PM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
johnf
November 12, 2019, 07:51:45 PM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
Weston
November 12, 2019, 07:39:00 PM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
bozidar
November 12, 2019, 06:44:36 PM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
jturnerkc
November 12, 2019, 02:49:05 PM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
Uspring
November 12, 2019, 02:21:38 PM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
shrad
November 12, 2019, 08:38:39 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
davekni
November 12, 2019, 06:20:41 AM
post Re: Royer oscillator (ZVS) driven Jacob's ladder, E80 core transformer
[Transformer (ferrite core)]
davekni
November 12, 2019, 06:02:30 AM
post Re: SGTC MK1 - An Accomplishment in Progress
[Spark gap Tesla coils]
davekni
November 12, 2019, 05:25:20 AM
post Re: IR wavelength in photoelectric smoke detectors?
[Light, lasers and optics]
davekni
November 12, 2019, 05:06:51 AM
post Re: New to tesla coils, some questions before I start building a SSTC
[Solid state Tesla coils]
Blin
November 11, 2019, 10:52:29 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