Author Topic: Anyone know of a good variable driver?  (Read 2474 times)

Offline FPS

  • High Voltage Enthusiast
  • *
  • Posts: 45
  • Karma: +0/-0
    • View Profile
Anyone know of a good variable driver?
« on: February 04, 2024, 12:56:52 AM »
Maybe it just is too hard to do but does a good flyback driver that has variable frequency and duty exist? from what I've seen they all break down at higher frequencies going from a nice square wave to an awful slope l\l\l\l\l\l\ at the trailing edge.

I've tested dimmers, and the expensive variable frequency "0.01-1.5MHz" PWM from RMCybernetics but it craps itself and cannot maintain anything that looks like a square wave beyond 1kHz.  Its writeup is good https://www.rmcybernetics.com/shop/cyber-circuits/pulse-generators/pulse-modulator-ocxi but really doesn't deliver, its decent for ignition coils though.

This is the only other one I've found with both variable freq. and duty. https://www.elecbee.com/en-31968-YF-22-PWM-Dimming-Speed-Controller-Module-Frequency-Duty-Ratio-Pulse-Adjustable-Square-Wave-Rectangu?search=frequency I've ordered but isn't here yet.

I've tried this one, ZK-PP2K PWM https://www.ebay.com.au/itm/403032556643 it's an extremely weak driver.

I've also tried switching a mosfet with a signal generator, it works but is weak.

Any schematics or modules with variable freq.?

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2290
  • Karma: +73/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Anyone know of a good variable driver?
« Reply #1 on: February 04, 2024, 08:04:36 PM »
"Good" depends on your use-case. I designed and a flyback driver with a 38 kHz to 150 kHz range, based on TL494: https://kaizerpowerelectronics.dk/high-voltage/tl494-flyback-driver/
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 FPS

  • High Voltage Enthusiast
  • *
  • Posts: 45
  • Karma: +0/-0
    • View Profile
Re: Anyone know of a good variable driver?
« Reply #2 on: February 04, 2024, 08:56:14 PM »
Thankyou Mads, it seems to perform well. So its a 12v driver that switches rectified mains like the RMcybernetics one above but looks to actually give a square wave.

What limited its lowest frequency to 38kHz? Is it a huge leap to get that down to 10kHz or so?

Offline Mads Barnkob

  • Administrator
  • Executive Board Member
  • *****
  • Posts: 2290
  • Karma: +73/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Anyone know of a good variable driver?
« Reply #3 on: February 04, 2024, 09:16:25 PM »
I seem to recall that it was a trade-off between bandwidth and duty-cycle, but I honestly don't remember.

I did also make a TL494 calculator that would fit perfect for your design questions :) https://kaizerpowerelectronics.dk/calculators/tl494-calculator/
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 FPS

  • High Voltage Enthusiast
  • *
  • Posts: 45
  • Karma: +0/-0
    • View Profile
Re: Anyone know of a good variable driver?
« Reply #4 on: February 07, 2024, 08:17:37 AM »
For arguments sake, if you could have a "universal driver" would you prefer a variable square wave +10/0, an alternating square +10/-10, or a sinusoidal wave? or other?

I've noticed some square waves perform very well like dimmers, and some not at all or extremely weakly like motor speed controllers. I've tried numerous types and I'm not sure why.
« Last Edit: February 07, 2024, 08:23:53 AM by FPS »

Offline NyaaX_X

  • High Voltage Technician
  • ***
  • Posts: 124
  • Karma: +2/-0
    • View Profile
Re: Anyone know of a good variable driver?
« Reply #5 on: February 07, 2024, 04:48:02 PM »
It may not good enough -- A comparator schmitt oscillator with triangle wave - voltage level dutycycle controller like this --


That is from Electroboom's article https://www.electroboom.com/?p=575.
And you can try other faster comparator, and simulate them on the SPICE software first to check the waveform.
« Last Edit: February 07, 2024, 04:50:36 PM by NyaaX_X »

Offline FPS

  • High Voltage Enthusiast
  • *
  • Posts: 45
  • Karma: +0/-0
    • View Profile
Re: Anyone know of a good variable driver?
« Reply #6 on: February 28, 2024, 03:24:45 PM »
This is the only other one I've found with both variable freq. and duty. https://www.elecbee.com/en-31968-YF-22-PWM-Dimming-Speed-Controller-Module-Frequency-Duty-Ratio-Pulse-Adjustable-Square-Wave-Rectangu?search=frequency I've ordered but isn't here yet.

The above didn't work, set to 16kHz 50% it was a weak driver that quickly went up in a puff of smoke.

Offline FPS

  • High Voltage Enthusiast
  • *
  • Posts: 45
  • Karma: +0/-0
    • View Profile
Re: Anyone know of a good variable driver?
« Reply #7 on: March 12, 2024, 06:54:50 PM »

/>
This is a mosfet driven from a signal generator which seems to work quite well, at least for ignition coils.

I have an older version schematic as attached, but am wondering what the improvements in the video one are? I see a capacitor has been added but where and for what purpose?.


High Voltage Forum

Re: Anyone know of a good variable driver?
« Reply #7 on: March 12, 2024, 06:54:50 PM »

 


* Recent Topics and Posts

post Re: Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
MRMILSTAR
Today at 05:22:43 AM
post Re: Want to build HV HF oscilloscope probe.
[Electronic Circuits]
Twospoons
Today at 05:08:46 AM
post Re: Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
davekni
Today at 04:49:16 AM
post Re: Ring Launcher AC vs DC?
[Induction Launchers, Coil Guns and Rails guns]
FPS
Today at 03:55:37 AM
post Re: Want to build HV HF oscilloscope probe.
[Electronic Circuits]
klugesmith
Today at 02:48:22 AM
post Re: Want to build HV HF oscilloscope probe.
[Electronic Circuits]
Domo
Today at 02:05:05 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
Today at 01:43:10 AM
post Re: Want to build HV HF oscilloscope probe.
[Electronic Circuits]
Twospoons
May 18, 2024, 11:30:11 PM
post Re: Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
MRMILSTAR
May 18, 2024, 10:10:56 PM
post Want to build HV HF oscilloscope probe.
[Electronic Circuits]
Domo
May 18, 2024, 09:46:17 PM
post Re: Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
davekni
May 18, 2024, 08:05:36 PM
post Re: Help an EE student
[General Chat]
Twospoons
May 18, 2024, 05:59:21 AM
post Re: What capacitor configuration to explode foil?
[Capacitor Banks]
MRMILSTAR
May 18, 2024, 05:44:41 AM
post Re: RDRSSTC - Project Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
ZakW
May 18, 2024, 01:55:42 AM
post Re: What capacitor configuration to explode foil?
[Capacitor Banks]
klugesmith
May 17, 2024, 11:49:33 PM
post Re: Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
MRMILSTAR
May 17, 2024, 10:18:46 PM
post Pulse Power High Current Discharges from 3 Phase PFC Capacitors
[Capacitor Banks]
Mads Barnkob
May 17, 2024, 07:24:22 PM
post Re: What capacitor configuration to explode foil?
[Capacitor Banks]
Mads Barnkob
May 17, 2024, 07:14:35 PM
post Re: Help an EE student
[General Chat]
Mads Barnkob
May 17, 2024, 08:35:38 AM
post Re: Help an EE student
[General Chat]
MRMILSTAR
May 17, 2024, 05:34:10 AM
post Re: colored 50 Ohm coax
[General Chat]
Da_Stier
May 16, 2024, 10:53:53 PM
post Re: Help an EE student
[General Chat]
Michelle_
May 16, 2024, 10:37:50 PM
post Re: Help an EE student
[General Chat]
davekni
May 16, 2024, 10:29:30 PM
post Re: Help an EE student
[General Chat]
klugesmith
May 16, 2024, 08:26:41 PM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
davekni
May 16, 2024, 06:54:05 PM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
NyaaX_X
May 16, 2024, 05:04:41 PM
post Re: Tesla Synth Player for Syntherrupter
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
AntoineRcbs
May 16, 2024, 12:13:47 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
Domo
May 16, 2024, 06:58:12 AM
post Re: New EE student asks about Cutting-Edge fields
[General Chat]
davekni
May 16, 2024, 06:47:09 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
NyaaX_X
May 16, 2024, 06:00:49 AM
post Re: New EE student asks about Cutting-Edge fields
[General Chat]
Twospoons
May 16, 2024, 05:45:08 AM
post Re: New EE student asks about Cutting-Edge fields
[General Chat]
davekni
May 16, 2024, 05:03:41 AM
post Re: DRSSTC grounding issues
[Dual Resonant Solid State Tesla coils (DRSSTC)]
davekni
May 16, 2024, 04:58:40 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
davekni
May 16, 2024, 04:36:40 AM
post Re: colored 50 Ohm coax
[General Chat]
klugesmith
May 16, 2024, 12:28:27 AM
post Re: Watercooling
[Dual Resonant Solid State Tesla coils (DRSSTC)]
acobaugh
May 15, 2024, 11:13:48 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
klugesmith
May 15, 2024, 10:58:05 PM
post colored 50 Ohm coax
[General Chat]
Da_Stier
May 15, 2024, 08:31:48 PM
post Re: DRSSTC grounding issues
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Mads Barnkob
May 15, 2024, 07:56:38 PM
post Re: DRSSTC grounding issues
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
May 15, 2024, 06:29:59 PM
post Re: Watercooling
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Felix B.
May 15, 2024, 04:04:14 PM
post Re: Schmitt trigger schematic question
[Electronic Circuits]
Michelle_
May 15, 2024, 03:32:57 PM
post DRSSTC grounding issues
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Felix B.
May 15, 2024, 03:07:39 PM
post New EE student asks about Cutting-Edge fields
[General Chat]
samsonwilliams
May 15, 2024, 05:50:59 AM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
Domo
May 15, 2024, 05:38:14 AM
post Re: Schmitt trigger schematic question
[Electronic Circuits]
Benjamin Lockhart
May 15, 2024, 04:58:02 AM
post Re: Big Coil Build Log
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
May 15, 2024, 04:34:49 AM
post Re: Watercooling
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
May 15, 2024, 04:30:18 AM
post Re: Watercooling
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
May 15, 2024, 04:00:55 AM
post Re: Watercooling
[Dual Resonant Solid State Tesla coils (DRSSTC)]
flyingperson23
May 15, 2024, 03:21:51 AM
post Re: Schmitt trigger schematic question
[Electronic Circuits]
Michelle_
May 14, 2024, 11:12:22 PM
post Re: Schmitt trigger schematic question
[Electronic Circuits]
Benjamin Lockhart
May 14, 2024, 11:00:00 PM
post Schmitt trigger schematic question
[Electronic Circuits]
Michelle_
May 14, 2024, 09:45:38 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
klugesmith
May 14, 2024, 09:02:28 PM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
May 14, 2024, 05:55:24 AM
post Re: Weird AC/DC mini SSTC build review
[Solid State Tesla Coils (SSTC)]
Michelle_
May 14, 2024, 05:44:12 AM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
MRMILSTAR
May 14, 2024, 05:11:54 AM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
alan sailer
May 13, 2024, 11:44:56 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
Domo
May 13, 2024, 10:28:34 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
alan sailer
May 13, 2024, 10:20:19 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
Domo
May 13, 2024, 09:27:58 PM
post Re: Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
alan sailer
May 13, 2024, 09:06:59 PM
post Help with primary voltages of unknown transformer
[Transformer (Ferrite Core)]
Domo
May 13, 2024, 08:43:49 PM
post Re: Benjamin's DRSSTC 2 in progress
[Dual Resonant Solid State Tesla coils (DRSSTC)]
Benjamin Lockhart
May 13, 2024, 07:25:29 PM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
OmGigaTron
May 13, 2024, 06:50:59 PM
post Re: Weird AC/DC mini SSTC build review
[Solid State Tesla Coils (SSTC)]
Michelle_
May 13, 2024, 03:47:08 PM
post Re: Small-ish 3D printed SGTC via cheap ZVS flyback build, humbly asking a couple ?s
[Spark Gap Tesla Coils (SGTC)]
Michelle_
May 13, 2024, 03:42:58 PM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
NyaaX_X
May 13, 2024, 07:09:16 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
davekni
May 13, 2024, 05:02:46 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
NyaaX_X
May 13, 2024, 02:25:25 AM
post Re: Plasma Torid - Class E Self Resonant Dual/Stereo - Plasma Torid Build
[Dual Resonant Solid State Tesla coils (DRSSTC)]
alan sailer
May 13, 2024, 01:39:11 AM
post Re: Plasma Toroid
[Solid State Tesla Coils (SSTC)]
alan sailer
May 13, 2024, 01:33:21 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
davekni
May 12, 2024, 10:56:53 PM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
NyaaX_X
May 12, 2024, 05:10:40 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 12, 2024, 04:24:44 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
alan sailer
May 12, 2024, 04:10:54 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 12, 2024, 04:04:11 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
hal7rr
May 12, 2024, 03:56:57 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 12, 2024, 03:46:45 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
hal7rr
May 12, 2024, 02:59:16 PM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
Michelle_
May 12, 2024, 02:51:27 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 12, 2024, 02:49:42 PM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
ZakW
May 12, 2024, 08:34:39 AM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
ZakW
May 12, 2024, 08:30:29 AM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 12, 2024, 02:35:17 AM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
alan sailer
May 12, 2024, 02:07:32 AM
post Re: Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
Michelle_
May 11, 2024, 09:55:59 PM
post Re: Help with LabCoatz's Staccato QCW DRSSTC
[Beginners]
NyaaX_X
May 11, 2024, 06:16:22 PM
post Help with LabCoatz's Staccato QCW DRSSTC Tesla Coil
[Beginners]
hal7rr
May 11, 2024, 05:24:34 PM
post Re: Type 77 Metglas Laced Ferrite Core
[General Chat]
NyaaX_X
May 11, 2024, 10:39:24 AM
post Re: Type 77 Metglas Laced Ferrite Core
[General Chat]
Mads Barnkob
May 11, 2024, 07:02:20 AM
post Re: Aluminum electrolytic capacitor ripple current issue
[Beginners]
NyaaX_X
May 11, 2024, 06:40:50 AM
post Type 77 Metglas Laced Ferrite Core
[General Chat]
paulp1776
May 11, 2024, 06:23:59 AM
post Re: Weird AC/DC mini SSTC build review
[Solid State Tesla Coils (SSTC)]
Michelle_
May 11, 2024, 05:27:22 AM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
alan sailer
May 11, 2024, 01:37:37 AM
post Re: designing and building electron gun help!
[General Chat]
Twospoons
May 11, 2024, 12:10:44 AM
post designing and building electron gun help!
[General Chat]
Luca c.
May 10, 2024, 09:38:05 PM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
Michelle_
May 10, 2024, 09:24:21 PM
post Re: Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
alan sailer
May 10, 2024, 08:43:11 PM
post Quick question about steve ward mini SST5 resonant frequency
[Solid State Tesla Coils (SSTC)]
Michelle_
May 10, 2024, 08:33:47 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