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Registered Member #977
Joined: Thu Aug 30 2007, 06:57PM
Location: England
Posts: 74
I pulled apart an old monitor today, and along with the flyback I found a few irf630s and irf640s, I'm just wondering if they'll be ok to run in a zvs or 555 timer based flyback driver, and if any of you have experience with them?
Registered Member #834
Joined: Tue Jun 12 2007, 10:57PM
Location: Brazil
Posts: 644
These are 200 V transistors, with 9 A and 18 A maximum current. You can use them, but not with the original primary winding of the flyback, that requires the 1600 V transistor (usually bipolar) that you can find in the board too and other components around it, as a fast diode in parallel, a high-voltage capacitor to limit the collector voltage, a driving transformer, etc. The maximum current is somewhat low too.
Registered Member #977
Joined: Thu Aug 30 2007, 06:57PM
Location: England
Posts: 74
Thanks for the pointers, I think I'm going to make http://flybak.wap.sh/More_1 that with my irf640s, and order some irf250s for a mazilli driver as well. What do you think of that resonant driver?
Registered Member #3414
Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
fight fire with fire wrote ...
Thanks for the pointers, I think I'm going to make http://flybak.wap.sh/More_1 that with my irf640s, and order some irf250s for a mazilli driver as well. What do you think of that resonant driver?
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MOSFET questions
