Oops, this thing won't work for long, don't build something like this. These IGBT modules are not suitable for DC loads, because they are built from many small IGBT chips that heat up unevenly and die from thermal runaway.
I know this video is old (stumbled upon it now). This is exactly what I built 20 years ago with a trash bin 200A IGBT module. An op amp, small DC power supply, fan, large heatsink and reverse protection diode on input. I still have it on my shelf. I haven't tested its max current capability (only 10A meter on it). The problem with IGBTs is that they are built for switching. Linear operation is another matter and IGBT SOA is really crap in linear. You won't even find SOA curves for linear operation in data sheets for IGBTs (true also for most Mosfets). There is really no other way to find out than set a voltage, turn up current until it explodes, rinse and repeat for all voltages. It doesn't help to monitor temperature. Due to the way IGBTs are built, in linear operation they will develop local hotspots and might blow up before reaching the stated max safe temperature. If someone wonders about this, search for a research paper "How to Make Linear Mode Work". There is a reason all linear power supplies use (old) BJTs (and for large currents, you need lots of them in parallel).
omg... i have 3 of those igbt's and never knew what they were. my friend that used to work on electric forklifts gave them to me years ago, I'm kinda new in electronics and there are no numbers on them other than 200A made in Italy... lol now I'm going to make one like yours only try it bigger....Thanks
For a given operating envelope of an electronic load, it is possible to devise a set of load resistors that will limit the linear device dissipation to a given value. Of course the resistors cost money, so if you don’t have a big stash of power resistors, it’d be cheaper to just use lots of BJts or mosfets instead and keep it well derated.
Wow. Very nice and simple build. I really like how you have all your stuff sorted and can go directly after the parts you need. Keep making these wonderful videos.
Ever try West Mountain Radio's Computerized Battery Analyzer? I used one recently and it's a very nice, $200ish 150W electronic load (or $930 for 550W). It's constant current by default but the extended software means it can be e.g. pulsed or act as a constant resistance or constant power load.
As a start, you can this this board and replace the mosfet with a IGBT. In my case it works fine. www.ebay.com/itm/DC-1V-100V-Constant-Current-Source-Electronic-Load-Board-50W-Max-6A-Power-Tester/291765610890?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
yeez how much current could a module like that pull at around 3 volts, what's the resistance like? Im trying to build lithium battery tester, I would want to achieve 60A at least, but 200A for peak testing would be awesome lol.
Hi, how could this be coupled to a micro controller and display, so to be able to measure a lead acid battery capacity ? What should the micro-controller monitor (voltage across shunt ?) or something else ? could you please help with how to easily drive this via micro controller (independently powered is okay too). Thanks in Advance. As always appreciate the work you put into your videos.
I have read, that because in these bricks multiple chips are in parallel, linear operation is difficult because a chip that gets warmer than the rest gets more current and gets even warmer and eventually dies. Is that only a theoretical problem or did you really have to take precautions for that?
Good point! MOSFETs have a positive temperature coefficient, so they balance themselves. If the semiconductors in one of these bricks are BJTs and there are only 3 terminals, I have to rely on the manufacturer to take care of the balancing. Only if there are multiple exposed bases I would consider doing the load balancing myself.
helou. I have fz800r33kl2c igbt transistor. Can you help me to build regulation driver for 0 to 20A load . what IC is in your schema and rezistors. Thank you
No PWM, it's really just the op-amp doing whatever it can to equalize its inputs. On + input I give it a voltage between 0 and 60 mV that is adjustable with the potentiometer and the - input is connected to the current shunt which happens to be 60 mV shunt. The op amp will increase its output voltage which in turn lowers the IGBT resistance until + and - are equal.
Whoops, sorry :) Just scrolled through the video, liked the idea of high power DC load (currently only have eBay 60W one), but hoped there would be a diagram in the description of the video. Sorry for the bother.
Water cooled power devices..( NOTE..DISTILLED WATER ONLY!! ) are necessary in cooling devices that just large heat sinks & cooling fans are woefully inadequate . These have very large power losses due to their high load current capabilities.. Load current in terms of thousands of Amps ..and device power losses in hundreds to thousands of watts in range.... Usually these are individually mounted on copper fin types of heatsinks that have a plumbing system for the water flow... The distilled water is processed through a filtration plant and cooled through water cooling towers.. Being pure distilled water it is a perfect insulator and although all devices may be @ high potential difference w.r.t. each other....the same water is circulated through all of them.
Oops, this thing won't work for long, don't build something like this. These IGBT modules are not suitable for DC loads, because they are built from many small IGBT chips that heat up unevenly and die from thermal runaway.
wait You commented it after 7 years DAMN man that is RESPECT
So show us a better diy version
Mosfet instead of the IGBT?
I know this video is old (stumbled upon it now). This is exactly what I built 20 years ago with a trash bin 200A IGBT module. An op amp, small DC power supply, fan, large heatsink and reverse protection diode on input. I still have it on my shelf. I haven't tested its max current capability (only 10A meter on it). The problem with IGBTs is that they are built for switching. Linear operation is another matter and IGBT SOA is really crap in linear. You won't even find SOA curves for linear operation in data sheets for IGBTs (true also for most Mosfets). There is really no other way to find out than set a voltage, turn up current until it explodes, rinse and repeat for all voltages. It doesn't help to monitor temperature. Due to the way IGBTs are built, in linear operation they will develop local hotspots and might blow up before reaching the stated max safe temperature. If someone wonders about this, search for a research paper "How to Make Linear Mode Work". There is a reason all linear power supplies use (old) BJTs (and for large currents, you need lots of them in parallel).
Всегда приятно иметь дело с умным человеком.
"These panel meters... are too crappy". Man you crack me up
I envy your stock of used parts. Wish I had access to a salvage company for recycling.
1959Berre what you need?
@@gweliver IGBT modules and aluminum
this is one of my favorite videos of you
omg... i have 3 of those igbt's and never knew what they were. my friend that used to work on electric forklifts gave them to me years ago, I'm kinda new in electronics and there are no numbers on them other than 200A made in Italy... lol now I'm going to make one like yours only try it bigger....Thanks
i like you always unexcitedly voice over very much :-) great project by the way!
+Mike Herbst Thanks! Most successful TH-cam videos have a lot of thumping dubstep music and yelling people though, maybe I'll try that next time :)
Marco Reps ... and smoke, flame and a hint of staged failure. Great video. I'm tempted to order the parts or a kit shortly. (Fixed a typo)
A box of incandescent bulbs are a good rough load, use a transistor for fine adjustment for thermal compensation. Super simple, easy to see load ;)
Great weekend project. Great done, from start to finish.
You have so much space! Its a dream. I wish I had the room to collect so much stuff!
Makes metal chips on carpet, "Fire in the hole" and click here to skip the 10 mins test! The wonders of editing or not in some cases! Pretty Awesome!
Your channel is different from others... It's unique, i like it!
For a given operating envelope of an electronic load, it is possible to devise a set of load resistors that will limit the linear device dissipation to a given value. Of course the resistors cost money, so if you don’t have a big stash of power resistors, it’d be cheaper to just use lots of BJts or mosfets instead and keep it well derated.
4:26 Silent Shout. Nice. Very nice.
4:16 … I imagined that with the Batman (The TV Series) transition melody played on that drill there…
I love the way you edit these- funny, informative, and unique. Keep it up!
Those are really nice aluminium extrusions!
You and The Post Apocalyptic Inventor should do a video together!
Perfect for those cold German nights.
This is great! Way better than my 'toaster' loads using heavy gauge 'vape' wire....
Who the fu@k dislikes this? Your channel is a goldmine. Great video, thank you!
Beautyful yet simple! Great weekend project.
Wow. Very nice and simple build. I really like how you have all your stuff sorted and can go directly after the parts you need. Keep making these wonderful videos.
I re-purpose old test equipment cases for my projects, Wish I had the machining capibility you have!
Ever try West Mountain Radio's Computerized Battery Analyzer? I used one recently and it's a very nice, $200ish 150W electronic load (or $930 for 550W). It's constant current by default but the extended software means it can be e.g. pulsed or act as a constant resistance or constant power load.
it's interesting though little frustrating, would you mind taking few minutes more for posting schematic and parts list please ?
he will not do that....
As a start, you can this this board and replace the mosfet with a IGBT. In my case it works fine.
www.ebay.com/itm/DC-1V-100V-Constant-Current-Source-Electronic-Load-Board-50W-Max-6A-Power-Tester/291765610890?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
Damn those diodes in PowerPAK are ridiculous.
Great video. Always refreshing to see a project from you. Cheers!
It is an art film. Likely to go for the golden bear!
6:40 that camera perspective makes the 1054z look even tinier than it actually is:)
This is scary, it was like watching Aliens.
like your videos very much! please continue this unique way
Hi
I have 6 of these IGBTs burning a hole in my parts box. Thanks for giving me a use for one of them. What IC did you use to drive it.
Cheers Dave.
General purpose Op-Amp
MG100Q1JS40
have maximum 340W power dissipation calculate from datasheet for 90C to Tcase according to Junction-to-Case thermal resistance
yeez how much current could a module like that pull at around 3 volts, what's the resistance like? Im trying to build lithium battery tester, I would want to achieve 60A at least, but 200A for peak testing would be awesome lol.
Good work Marco. I like it.
Hi, how could this be coupled to a micro controller and display, so to be able to measure a lead acid battery capacity ? What should the micro-controller monitor (voltage across shunt ?) or something else ? could you please help with how to easily drive this via micro controller (independently powered is okay too). Thanks in Advance. As always appreciate the work you put into your videos.
Glad I caught this video, Excellent job! 😂
Can you please send to me the link of the transistor that you used and the map of wire it with the other equipment numbers to control it
Watching this video again I always wondered, how the hell do you get all this stuff?
The Goldilocks load. Mmm just right.
Nice work.
1. Can it work as capacitive and inductive loads?
2. Which parts are bottlenecking?
beautiful work !!!!!!
I have read, that because in these bricks multiple chips are in parallel, linear operation is difficult because a chip that gets warmer than the rest gets more current and gets even warmer and eventually dies. Is that only a theoretical problem or did you really have to take precautions for that?
Good point! MOSFETs have a positive temperature coefficient, so they balance themselves. If the semiconductors in one of these bricks are BJTs and there are only 3 terminals, I have to rely on the manufacturer to take care of the balancing. Only if there are multiple exposed bases I would consider doing the load balancing myself.
how low voltage can you go with IGBT? can it be used for example to discharge battery etc.? (if I use smaller IGBT). I ask because of the Vce of IGBT.
Is there a "Quick and Powerful IGBT Electronic Load" schematic anywhere available? :)
All I got is at 2:13 bottom left, sorry
@@reps what is the number of that IGBT
"Fire in the hole" haha
helou. I have fz800r33kl2c igbt transistor. Can you help me to build regulation driver for 0 to 20A load . what IC is in your schema and rezistors.
Thank you
Where can I find a heat sink like that, other than from scavenging old hardware? I can't seem to find heat sinks of that design anywhere
cooling aggregate is a keyword that might help
Thanks for responding so quick! Googling seems to bring up european websites only. Or it brings up concrete websites lol
Hi! how are u? i´m interesting in buy the LCF-1, where can i get?
Is there a schematic
so beautiful wow
Bom trabalho!!! parabens!!!
Hi, can you display a test with 30 or even 50 amps load. I have my doubts this design can do that. But if so, I will go for it.
Tx
"This one is too crappy"
what is the funcioning principle behind this?
the pot sets a pwm that changes the duty cycle of the igbt thus controlling the amount of current passing throw a shunt resistor(?)
No PWM, it's really just the op-amp doing whatever it can to equalize its inputs. On + input I give it a voltage between 0 and 60 mV that is adjustable with the potentiometer and the - input is connected to the current shunt which happens to be 60 mV shunt. The op amp will increase its output voltage which in turn lowers the IGBT resistance until + and - are equal.
Marco, do you have schematics for this load?
Sure, 2:15 bottom left
Whoops, sorry :) Just scrolled through the video, liked the idea of high power DC load (currently only have eBay 60W one), but hoped there would be a diagram in the description of the video. Sorry for the bother.
What would a water cooled thyristor be used for?
Train motor drivers, industrial high power stuff, ...
high voltage/power rectification too.
Water cooled power devices..( NOTE..DISTILLED WATER ONLY!! ) are necessary in cooling devices that just large heat sinks & cooling fans are woefully inadequate . These have very large power losses due to their high load current capabilities..
Load current in terms of thousands of Amps ..and device power losses in hundreds to thousands of watts in range....
Usually these are individually mounted on copper fin types of heatsinks that have a plumbing system for the water flow...
The distilled water is processed through a filtration plant and cooled through water cooling towers..
Being pure distilled water it is a perfect insulator and although all devices may be @ high potential difference w.r.t. each other....the same water is circulated through all of them.
Great project. But I think there's a law against having WD40 in a serious lab. ;-)
nice treasure
Don't you think that you have very heavy voice
drill POV :O ingenius
👏👏👏👏👏👏👏👏👏
I read LGBT load at first
What is this gay electricity 😂