Author Topic: Cannot directly coupled to GDT even with symmetrical polarity square signal  (Read 165 times)

Offline VNTC

  • High Voltage Enthusiast
  • *
  • Posts: 47
  • Karma: +0/-0
    • View Profile
I focused on design electrical circuit that could create the burst pulses length look like ideal square wave as figure1 (Marty’s image, no ripple wave).

I spend a lot of time to exclude the ripples of GDT signals after try, try, but the result was a disastrous failure, but somehow managed to catch it a part.
What is a disastrous failure? Fist,I try to make a circuit can generate square wave symmetrical and try to coupling direct to GDT but cannot and several driver chip UCC37321 fail.
I am exasperated, so I run simulation to find out the reason.(image2)

The result of simulation shows that voltage wave look very good

but current is deviation to one side of polarities (image3) and seriously in the long duration signals (image4)


Then I must be used capacitor 1uf for DC cut (image 5) switchU1 start burst lengthU3 stop burst length, U2 switch simulate UCC37321 pull to GND. These switches simulate driver chips working in interrupt mode.
Right after the capacitor the ripples appear by 2 parts: front ripple and rear ripple they have the periods 160us . They created by capacitor 1.5uf and inductance 440uH.in serial circuit. (image5) reduce ripple circuit coupled.(parameter from my real circuit with the coil 5turns on ferrit core 5mmx12mm cross section)

Solution to reduce part 1 of ripple is rather simple the amplitude limiter used zener diode can gives good effect to do that (image6) reduce ripple circuit coupled, front ripple was almost excluded

Part2 of the ripple I not yet find out the way to reduce it. In practice it do not causes the bad effect to run Tesla coil.

« Last Edit: June 05, 2019, 03:15:28 PM by VNTC »

High Voltage Forum


 


* Recent Topics and Posts

post Re: Large Ferrite Core with IGBT-Brick Driver
[Transformer (ferrite core)]
ElectroXa
Today at 08:32:56 PM
post X-ray measurement
[X-ray]
AlexanderHun
Today at 05:39:23 PM
post Re: Weller PU81 station mod for DSX80 desoldering handle
[Electronic circuits]
rafscipio
Today at 12:54:48 PM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
Phoenix
Today at 07:37:55 AM
post Re: Large Ferrite Core with IGBT-Brick Driver
[Transformer (ferrite core)]
Phoenix
Today at 06:43:39 AM
post Re: Problems with my first DRSSTC
[Dual Resonant Solid State Tesla coils]
davekni
Today at 01:45:37 AM
post Re: Breakout rod material and size vs streamer resuls
[Dual Resonant Solid State Tesla coils]
davekni
Today at 12:18:00 AM
post Re: My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
davekni
September 22, 2019, 10:16:26 PM
post Re: My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
AstRii
September 22, 2019, 05:40:52 PM
post Re: My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
davekni
September 22, 2019, 06:43:46 AM
post Re: My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
AstRii
September 22, 2019, 12:36:23 AM
post Re: My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
Hydron
September 22, 2019, 12:03:43 AM
post My DRSSTC does not want to resonate at correct frequency
[Dual Resonant Solid State Tesla coils]
AstRii
September 21, 2019, 09:01:48 PM
post Re: The new toy
[Laboratories ]
DashApple
September 21, 2019, 05:54:03 PM
post Re: The new toy
[Laboratories ]
MRMILSTAR
September 21, 2019, 05:38:14 PM
post Re: The new toy
[Laboratories ]
DashApple
September 21, 2019, 04:55:44 PM
post Re: The new toy
[Laboratories ]
MRMILSTAR
September 21, 2019, 04:03:48 PM
post Re: The new toy
[Laboratories ]
T3sl4co1l
September 21, 2019, 03:57:22 PM
post Re: The new toy
[Laboratories ]
Hydron
September 21, 2019, 09:15:47 AM
post Re: The new toy
[Laboratories ]
Hydron
September 21, 2019, 09:11:18 AM
post Re: The new toy
[Laboratories ]
AlexanderHun
September 21, 2019, 09:08:50 AM
post Re: The new toy
[Laboratories ]
AlexanderHun
September 21, 2019, 08:59:41 AM
post Re: Blast from the past!
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Hydron
September 20, 2019, 11:32:35 PM
post Re: Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Hydron
September 20, 2019, 11:28:05 PM
post Re: The new toy
[Laboratories ]
Hydron
September 20, 2019, 11:20:21 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
Hydron
September 20, 2019, 11:10:54 PM
post Re: The new toy
[Laboratories ]
AlexanderHun
September 20, 2019, 09:49:00 PM
post Re: The new toy
[Laboratories ]
DashApple
September 20, 2019, 08:17:36 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
September 20, 2019, 08:06:32 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 20, 2019, 05:43:13 PM
post Re: Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Twospoons
September 20, 2019, 01:32:30 PM
post Re: Adventures in induction heating
[Electronic circuits]
Coyote
September 20, 2019, 10:56:19 AM
post Re: Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
kamelryttarn
September 20, 2019, 10:02:28 AM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
davekni
September 20, 2019, 07:05:19 AM
post Re: Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Hydron
September 19, 2019, 11:16:21 PM
post Re: The new toy
[Laboratories ]
AlexanderHun
September 19, 2019, 09:49:30 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
September 19, 2019, 09:49:15 PM
post Re: The new toy
[Laboratories ]
Mads Barnkob
September 19, 2019, 09:13:29 PM
post Re: Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
September 19, 2019, 09:08:20 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 19, 2019, 07:16:20 PM
post Help choosing a Hantek USB oscilloscope
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
kamelryttarn
September 19, 2019, 04:19:58 PM
post The new toy
[Laboratories ]
AlexanderHun
September 19, 2019, 09:01:46 AM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 18, 2019, 07:27:46 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 18, 2019, 06:56:20 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 18, 2019, 05:08:06 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
September 18, 2019, 01:35:58 PM
post Re: CM300 coil build questions
[Dual Resonant Solid State Tesla coils]
acobaugh
September 18, 2019, 05:54:23 AM
post Re: Blast from the past!
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
klugesmith
September 18, 2019, 05:05:55 AM
post Re: UD2.7 Gate Signals
[Dual Resonant Solid State Tesla coils]
coilinator
September 17, 2019, 08:24:59 PM
post Re: Blast from the past!
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
MRMILSTAR
September 17, 2019, 08:19:45 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