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Registered Member #3637
Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
I've been looking back and forth between new posts and old posts and they often contradict each other. It's confusing, and I just want a final, honest answer.
Is it possible to parallel 2 or more SCR's (of the same type) reliably, without any issues, with gate trigger resistors on each of them so they all trigger roughly the same time?
Registered Member #4034
Joined: Thu Jul 28 2011, 10:41PM
Location: somewhere in the Southern hemisphere
Posts: 138
i've done it before with alright results. and coilgun systems does it - and that guy is a genius so it must be ok. Oh btw i'll look into that scr for you tomorrow.
Registered Member #1525
Joined: Mon Jun 09 2008, 12:16AM
Location: America
Posts: 294
Yes, it is possible and has been done successfully many times.
The concern is that not all identical SCRs may have perfectly identical properties, so they may not share the current evenly and one may pass more current than it's rated for. A simple solution is to over-design by a reasonable margin of safety.
If you were designing a professional circuit that had to work reliably for 15-20 years, you might think twice about it, but if you're making a coilgun in your garage, it can be the best way to go in many cases.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Works for me. I put 5 and even 10 SCRs in parallel and they heldup to >1KJ in my case. They died later because i was really stupid and put the capacitor bank voltage to the gate instead of Anode =(
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Is it a good idea or not to put SCR's in parallel?
