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4hv.org :: Forums :: High Voltage
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Got few 100A/1000V Darlingtons, what to do with these?

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Kizmo
Sun Jul 01 2007, 07:51PM Print
Kizmo Registered Member #599 Joined: Thu Mar 22 2007, 07:40PM
Location: Northern Finland, Rovaniemi
Posts: 624
Hi!

I found 30kW 3-phase AC motor controller from junkyard, i quickly disassembled it and found 3 power darlingtons.
http://doc.chipfind.ru/pdf/etc/mg100m2yk1.pdf

Darlington

Now im waiting for ideas about what to do with these :)
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Dr. Dark Current
Mon Jul 02 2007, 11:34AM
Dr. Dark Current Registered Member #152 Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
these are probably not good for anything that involves high frequency (SSTC, flyback...), for me they would be pretty useless
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Marko
Mon Jul 02 2007, 12:01PM
Marko Registered Member #89 Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
for me they would be pretty useless

With proper current proportional drive and ZCS application you could push their delays down and even use for a large induction heater or something with low operating frequency.

Still they are really slow and I don't know how far could you go with them.
Hardly over audio range.

Their best use is although still at line frequencies. Fix that frequency regulator and sell it on ebay?
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Wolfram
Mon Jul 02 2007, 12:45PM
Wolfram Registered Member #33 Joined: Sat Feb 04 2006, 01:31PM
Location: Norway
Posts: 971
In addition to the stuff already suggested: A very powerful linear voltage regulator, switching in a coilgun, a very powerful audio amplifier.
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Sulaiman
Mon Jul 02 2007, 03:31PM
Sulaiman Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
I think you could make a pretty good MOTOR CONTROLLER with those cheesey

I also estimate 0 to 20 kHz as their useful range.
A little more with zvs/cvs inverters.

Certainly you could make an insanely powerful audio amplifier - directly powered from full-wave rectified mains.
Too hazardous to use though ! (live everywhere)
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Zum Beispiel
Mon Jul 02 2007, 03:47PM
Zum Beispiel Registered Member #514 Joined: Sun Feb 11 2007, 12:27AM
Location: Somewhere in Pirkanmaa, Finland
Posts: 295
Audio amplifier was the first thing I thought, too.

Maybe if you could find a big enough core you could wind yourself a 30kW flyback and use those to drive it tongue
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