Author Topic: Why only one flip flop for ZCS-OCD triggering?  (Read 340 times)

Offline Overlordcheese

  • High Voltage Enthusiast
  • *
  • Posts: 8
  • Karma: +0/-0
    • View Profile
Why only one flip flop for ZCS-OCD triggering?
« on: June 27, 2022, 08:31:45 PM »
Hello! I was recently looking at the UD2.7c, as is my daily practice. I always lived the implementation of a flip flop to make it so that in the event of an over current, UVLO, or the pulse has ended, that ZCS is ensured… but that flip flop only changes state when the ultrafast comparator changes from negative to positive, so only half of the ZCS events are detected. Why don’t we invert this signal, do the same thing we did with the other flip flop, and feed both flip flop’s output into an AND gate.
if this sounds stupid, am sorry, but I’ve been thinking on it for a while

Offline davekni

  • Executive Board Member
  • *******
  • Posts: 2004
  • Karma: +103/-1
  • Physicist, engineer (electronic), and hobbiest
    • View Profile
Re: Why only one flip flop for ZCS-OCD triggering?
« Reply #1 on: June 28, 2022, 05:09:25 AM »
Quote
if this sounds stupid, am sorry, but I’ve been thinking on it for a while
No, definitely not stupid.  Adds a little bit of complexity in order to gain half-cycle-faster response to over-current.  My DRSSTC checks OCD on both edges much like you suggest.
David Knierim

Offline Manz

  • High Voltage Enthusiast
  • *
  • Posts: 5
  • Karma: +2/-0
    • View Profile
Re: Why only one flip flop for ZCS-OCD triggering?
« Reply #2 on: October 12, 2022, 12:06:27 PM »
This is exactly what i did with my driver. It uses 2 flip flops to detect ZVS on rising and falling edges of the clock. I think it's not really necessary but I really like it, the big advantage in my opinion is the greater control over the ontime when playing MIDI in particular when songs have a progressive ontime it sounds very good.
I'm going to make a thread about my coil, if you are interested I can show some details of the driver :)

High Voltage Forum

Re: Why only one flip flop for ZCS-OCD triggering?
« Reply #2 on: October 12, 2022, 12:06:27 PM »

 


* Recent Topics and Posts

post Re: improving zvs driver
[General Chat]
davekni
Today at 03:42:13 AM
post Re: MidiStick V2.0: Next gen tesla coil interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
TMaxElectronics
Today at 01:01:56 AM
post Re: improving zvs driver
[General Chat]
x-rayLamp
Today at 12:04:20 AM
post Re: ud 2.7c poped caps
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 29, 2023, 07:15:43 PM
post Re: ud 2.7c poped caps
[Dual Resonant Solid State Tesla coils (DRSSTC)]
costas_p
January 29, 2023, 06:13:45 PM
post Re: ud 2.7c poped caps
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mike
January 29, 2023, 05:53:11 PM
post Please, help me (financially) build a DRSSTC
[Crowdfunding]
Pavol
January 29, 2023, 03:02:55 PM
post ud 2.7c poped caps
[Dual Resonant Solid State Tesla coils (DRSSTC)]
costas_p
January 29, 2023, 02:04:59 PM
post Showa SP-103 Standalone Xray Head Teardown
[Transformer (Iron Core)]
Mads Barnkob
January 29, 2023, 01:04:56 PM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
davekni
January 29, 2023, 04:24:43 AM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
ZakW
January 29, 2023, 12:54:13 AM
post Re: Welding a MOT
[Transformer (Iron Core)]
Alberto
January 28, 2023, 11:47:22 PM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
ZakW
January 28, 2023, 11:34:58 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Mads Barnkob
January 28, 2023, 10:14:54 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Alberto
January 28, 2023, 04:53:39 PM
post Re: improving zvs driver
[General Chat]
davekni
January 28, 2023, 04:59:05 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 28, 2023, 04:44:51 AM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
davekni
January 28, 2023, 04:35:22 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 28, 2023, 03:29:09 AM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
ZakW
January 27, 2023, 11:15:03 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Mads Barnkob
January 27, 2023, 08:43:51 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Alberto
January 27, 2023, 08:17:06 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Mads Barnkob
January 27, 2023, 08:07:12 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Alberto
January 27, 2023, 01:30:02 PM
post Re: improving zvs driver
[General Chat]
x-rayLamp
January 27, 2023, 01:01:01 PM
post Re: Phase lead problems on ud2.7c
[Dual Resonant Solid State Tesla coils (DRSSTC)]
vince1
January 27, 2023, 12:49:46 PM
post Re: Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
davekni
January 27, 2023, 06:07:49 AM
post Re: Phase lead problems on ud2.7c
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 27, 2023, 05:22:46 AM
post Re: Welding a MOT
[Transformer (Iron Core)]
davekni
January 27, 2023, 05:10:14 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 27, 2023, 05:05:40 AM
post Re: improving zvs driver
[General Chat]
davekni
January 27, 2023, 04:44:24 AM
post Phase lead problems on ud2.7c
[Dual Resonant Solid State Tesla coils (DRSSTC)]
vince1
January 27, 2023, 01:26:20 AM
post Re: improving zvs driver
[General Chat]
x-rayLamp
January 26, 2023, 08:13:24 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 26, 2023, 12:02:14 PM
post Re: Welding a MOT
[Transformer (Iron Core)]
Alberto
January 26, 2023, 12:01:48 PM
post Re: Ramped SSTC - Power Supply Issues
[Solid State Tesla Coils (SSTC)]
ZakW
January 26, 2023, 05:35:32 AM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
MRMILSTAR
January 26, 2023, 04:55:24 AM
post Re: improving zvs driver
[General Chat]
davekni
January 26, 2023, 04:14:49 AM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
davekni
January 26, 2023, 03:57:19 AM
post Re: Welding a MOT
[Transformer (Iron Core)]
davekni
January 26, 2023, 03:42:01 AM
post Re: Welding a MOT
[Transformer (Iron Core)]
Da_Stier
January 25, 2023, 10:21:43 PM
post Welding a MOT
[Transformer (Iron Core)]
Alberto
January 25, 2023, 09:37:27 PM
post Re: My completed 14-stage Cockroft-Walton voltage multiplier
[Voltage Multipliers]
MRMILSTAR
January 25, 2023, 09:36:22 PM
post Re: improving zvs driver
[General Chat]
SteveN87
January 25, 2023, 08:35:49 PM
post improving zvs driver
[General Chat]
x-rayLamp
January 25, 2023, 04:32:37 PM
post Re: MidiStick V2.0: Next gen tesla coil interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
nzoomed
January 25, 2023, 08:27:01 AM
post Re: Ramped SSTC - Power Supply Issues
[Solid State Tesla Coils (SSTC)]
davekni
January 25, 2023, 04:08:42 AM
post Re: Ramped SSTC - Power Supply Issues
[Solid State Tesla Coils (SSTC)]
ZakW
January 24, 2023, 06:37:39 PM
post Re: Ramped SSTC - Power Supply Issues
[Solid State Tesla Coils (SSTC)]
davekni
January 24, 2023, 05:21:49 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
davekni
January 24, 2023, 04:41:01 AM
post Ramped SSTC - Power Supply Question + General Improvements
[Solid State Tesla Coils (SSTC)]
ZakW
January 23, 2023, 10:48:17 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
rikkitikkitavi
January 23, 2023, 10:23:54 PM
post Re: 160mm DRSSTC project
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mathieu thm
January 23, 2023, 07:21:10 PM
post Re: 160mm DRSSTC project
[Dual Resonant Solid State Tesla coils (DRSSTC)]
futurist
January 23, 2023, 06:21:07 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
Mads Barnkob
January 23, 2023, 01:23:41 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 22, 2023, 07:17:25 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 22, 2023, 12:53:01 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 22, 2023, 06:21:40 AM
post Re: Creating arcs off my variac lol, popped my igbts
[Transformer (Iron Core)]
klugesmith
January 22, 2023, 04:45:46 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 21, 2023, 11:47:55 PM
post [WTS] (free except shipping) 115V 3600RPM sync. motor
[Sell / Buy / Trade]
davekni
January 21, 2023, 08:50:05 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 21, 2023, 08:19:31 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 21, 2023, 03:01:21 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 21, 2023, 05:44:15 AM
post Re: Creating arcs off my variac lol, popped my igbts
[Transformer (Iron Core)]
Avenger
January 21, 2023, 04:44:09 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 20, 2023, 10:52:40 PM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 20, 2023, 06:20:32 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 20, 2023, 06:03:20 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 20, 2023, 04:49:50 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
davekni
January 20, 2023, 04:19:23 AM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
Rafft
January 20, 2023, 03:12:39 AM
post Re: MidiStick V2.0: Next gen tesla coil interrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
TMaxElectronics
January 19, 2023, 11:39:37 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 19, 2023, 10:54:51 PM
post Re: 160mm DRSSTC project
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mathieu thm
January 19, 2023, 09:19:19 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
Mads Barnkob
January 19, 2023, 08:33:18 PM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 19, 2023, 03:48:02 PM
post Re: First test of the SSTC
[Solid State Tesla Coils (SSTC)]
LoOdaK
January 19, 2023, 11:09:39 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 19, 2023, 04:30:49 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
klugesmith
January 19, 2023, 03:10:56 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
Mads Barnkob
January 18, 2023, 08:23:57 PM
post Re: Creating arcs off my variac lol, popped my igbts
[Transformer (Iron Core)]
Mads Barnkob
January 18, 2023, 08:13:28 PM
post Re: 160mm DRSSTC project
[Dual Resonant Solid State Tesla coils (DRSSTC)]
dbach
January 18, 2023, 05:56:11 PM
post Creating arcs off my variac lol, popped my igbts
[Transformer (Iron Core)]
breezetix
January 18, 2023, 08:24:15 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 18, 2023, 06:40:30 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 18, 2023, 06:29:45 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 18, 2023, 04:56:33 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 18, 2023, 04:39:55 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
davekni
January 18, 2023, 04:27:49 AM
post Re: 160mm DRSSTC project
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mathieu thm
January 17, 2023, 11:16:00 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
rikkitikkitavi
January 17, 2023, 09:37:16 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
klugesmith
January 17, 2023, 05:38:24 PM
post Re: I need a review of my circuit. Polarities specifically
[Electronic Circuits]
RoamingD
January 17, 2023, 03:35:47 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
rikkitikkitavi
January 17, 2023, 12:43:26 PM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
klugesmith
January 17, 2023, 07:51:05 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 17, 2023, 07:02:37 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
Twospoons
January 17, 2023, 05:41:59 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
January 17, 2023, 05:41:38 AM
post Re: QCW questions
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Rafft
January 17, 2023, 05:06:24 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
davekni
January 17, 2023, 05:04:21 AM
post Re: 8 kW Induction Cooktop Teardown and Reverse engineering
[Electronic Circuits]
klugesmith
January 17, 2023, 04:41:26 AM

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