Author Topic: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge  (Read 91 times)

Offline L_Mangold

  • High Voltage Enthusiast
  • *
  • Posts: 5
  • Karma: +0/-0
    • View Profile
Hello everyone,

I wanted to get a few other peoples' input on probing techniques for troubleshooting (DR)SSTC H-bridge circuitry. Currently, I have been using a used analogue CRT scope from Tektronics for probing pretty much everything from my driver to the actual power side of the coil(s) that I've been working on. The benefit of the analogue scope has included being able to see very short/transient spikes, as well as the fact that it has an add feature that allows for differential (I believe) measurements. I've been able to tune my primary, probe current waveforms, and even turn phase lead on the driver, but I've been nervous about taking any measurements when powering the bridge via mains. I just bought a Hantek digital storage scope, and an additional 1-100X probe so my old scope will now be my back-up one and provide an additional 2 channels in case I need more than 2 for one test.

My question is simply to inquire as to how everyone else probes their bridge; particularly probing the high side IGBT's and tuning phase lead, and whether or not you use a high voltage differential probe.

Thank you kindly in advance!

Offline Mads Barnkob

  • Administrator
  • High Voltage Senior
  • *****
  • Posts: 989
  • Karma: +15/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
« Reply #1 on: May 15, 2019, 10:08:11 AM »
I use my DSO1054z with a range of different Pearson current monitors and a Tektronix P5100 differential probe for up to 1100V isolated measurements. I also have a 2ch Tektronix A6909 isolator for up to 600V.

I try to follow the guide on measurements found here: https://highvoltageforum.net/index.php?topic=2.0

Quote
Guides and tutorials
https://highvoltageforum.net/index.php?topic=111.0 - Tektronix 30-page guide to do CORRECT measurements on SMPS and Inverters
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Teravolt

  • High Voltage Experimenter
  • **
  • Posts: 92
  • Karma: +1/-0
    • View Profile
Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
« Reply #2 on: May 20, 2019, 06:33:49 PM »
invest in a isolation transformer so you can connect your scope common to your power sources common. reserch so you understand what you doing. I just use a dual winding 120 to 120 transformer. it does not have to be a expensive topaz transformer just something to seperate your mains refrance to ground. if you have 220 the same applies. it will be cheaper than a diferencial probe

Offline Mads Barnkob

  • Administrator
  • High Voltage Senior
  • *****
  • Posts: 989
  • Karma: +15/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
« Reply #3 on: May 21, 2019, 09:51:27 PM »
Dave from EEVblog made a video long ago on oscilloscope grounding

http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

High Voltage Forum

Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
« Reply #3 on: May 21, 2019, 09:51:27 PM »

 


* Recent Topics and Posts

post Easy access to optimal resonance frequency but the benefit is quite small
[Dual Resonant Solid State Tesla coils]
VNTC
May 21, 2019, 11:35:57 PM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
Mads Barnkob
May 21, 2019, 09:59:54 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Mads Barnkob
May 21, 2019, 09:51:27 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
T3sl4co1l
May 21, 2019, 09:49:03 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 21, 2019, 09:02:10 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 08:59:57 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 21, 2019, 08:28:43 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 21, 2019, 08:22:28 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 06:21:37 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 21, 2019, 06:12:55 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
profdc9
May 21, 2019, 04:06:38 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 03:56:56 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 21, 2019, 03:46:56 PM
post Re: DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
profdc9
May 21, 2019, 02:32:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 21, 2019, 06:12:18 AM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
profdc9
May 20, 2019, 11:30:34 PM
post DRSSTC design questions + project progress
[Dual Resonant Solid State Tesla coils]
Vaclav
May 20, 2019, 06:38:54 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Teravolt
May 20, 2019, 06:33:49 PM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 20, 2019, 02:27:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
May 20, 2019, 02:57:46 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
T3sl4co1l
May 20, 2019, 01:06:27 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 19, 2019, 09:14:59 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 19, 2019, 06:40:41 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
flyrod
May 19, 2019, 04:04:12 PM
post Re: Offgrid 48V solar to 24V battery setup
[Electronic circuits]
Mads Barnkob
May 19, 2019, 11:24:46 AM
post Re: ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
flyrod
May 19, 2019, 03:22:54 AM
post Re: Are bleeder resistors necessary if I can easily discharge my capacitor?
[Spark gap Tesla coils]
profdc9
May 19, 2019, 03:18:52 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 18, 2019, 10:48:59 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 18, 2019, 04:19:11 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
May 17, 2019, 10:57:17 PM
post Are bleeder resistors necessary if I can easily discharge my capacitor?
[Spark gap Tesla coils]
jpb133
May 17, 2019, 09:41:56 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Uspring
May 17, 2019, 12:41:17 PM
post ZVS Mazzilli circ with active gate driver - what causes ringing?
[Electronic circuits]
82026
May 16, 2019, 04:15:58 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Fumeaux
May 16, 2019, 02:19:39 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 16, 2019, 01:50:44 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Uspring
May 16, 2019, 12:17:01 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Fumeaux
May 16, 2019, 08:45:15 AM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 15, 2019, 11:49:59 PM
post Re: Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Hydron
May 15, 2019, 10:51:33 PM
post Identification of unknown embedded computer, help needed.
[Computers, Microcontrollers, Programmable Logic, Interfaces and Displays]
Mads Barnkob
May 15, 2019, 09:35:41 PM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Golddustpeak
May 15, 2019, 05:07:20 PM
post Re: Mounting LCD CFL's around DRSSTC?
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 15, 2019, 12:46:33 PM
post Re: General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
Mads Barnkob
May 15, 2019, 10:08:11 AM
post Re: Is one of these good?
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
May 15, 2019, 10:04:59 AM
post General Oscilloscope Probing Techniques for (DR)SSTC h-bridge
[Beginners]
L_Mangold
May 15, 2019, 12:42:46 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
May 14, 2019, 11:28:43 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
badpeter
May 14, 2019, 09:58:28 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
May 14, 2019, 08:35:28 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
badpeter
May 14, 2019, 07:41:48 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
hightemp1
May 14, 2019, 06:05:25 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