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4hv.org :: Forums :: High Voltage
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Flybacks

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Grignacke
Tue Nov 30 2010, 01:19AM Print
Grignacke Registered Member #3457 Joined: Tue Nov 30 2010, 01:11AM
Location:
Posts: 2
Hi guys, first post here, I'm glad to have joined the eschelons of high voltage enthusiasts!

I recently built a 555 flyback circuit (the one with a 2n2222 and a IRF510), worked great, good arcs and whatnot, until today, when I accidently let the output for the flyback and the ground for the flyback touch. I heard a pop, and quickly found nothing worked. I tested / replaced the 555 and transistors for good measure, but still, no work. The flyback is of the variety that came from a TV, (http://en.wikipedia.org/wiki/File:DST_Zeilentrafo.jpg this one) and the thing I can fathom went wrong was that the diode somehow was damaged when the anode and ground touched... has this problem ever occured with you all?

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Patrick
Tue Nov 30 2010, 02:57AM
Patrick Registered Member #2431 Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
the irf510 is delicate, did you replace it?

or you may have arc'ed an open into the secondary. if you have another flyback/iggy then try a new transformer.
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Grignacke
Tue Nov 30 2010, 11:52AM
Grignacke Registered Member #3457 Joined: Tue Nov 30 2010, 01:11AM
Location:
Posts: 2
I did replace the irf510. I think you're right, I'll just replace it with another one I have lying around... thank you very much!
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