 Flyback charger triggering scrs
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Turkey9
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Sun Jan 04 2009, 02:48AM
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Registered Member #1451
Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
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I have built a flyback charger that has a 340v output and a 610v output. I can charge my cap bank to 610 with ease but to trigger my scr I have to have the gate driver circuit unplugged until I turn off the charger. I can trigger the bank whenever I want to fire the scr as long as the caps have already been charged. But if I leave the gate drive circuit on while I charge, the scr mysteriously fires before the caps can charge much. As far as I know the scr gate is low when it charges. What´s going on here?
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rp181
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Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
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Try twisting your gate leads together. It helps with the interference. Also short the gate lead to cathode.
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