 Flyback Driver Using 555 and IRFP260
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hamedn666
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Registered Member #5357
Joined: Sun Jun 17 2012, 01:45PM
Location:
Posts: 2
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where is the schematic?
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Dr. Brownout
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Registered Member #2405
Joined: Fri Oct 02 2009, 12:59AM
Location: Wisconsin
Posts: 140
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hamedn666 wrote ...
where is the schematic?
I never drew up a schematic for it. Its just a 555 driving a single mosfet with a 5.1 ohm gate resistor. If you want schematic I could draw one up and post it. The 555 single mosfet drivers are all over the internet. I had to add the gate resistor or the MOSFET would run to hot. Now it runs nice and cool I have run it for a couple of hours and the heat sink is luke warm but not hot.
Most of the schematics that are posted show no gate resistor however using the IRFP260 I would recommend one if you want to keep it running cool. I used the IRFP260 Fets because I had a bunch of them. Originally I was going to use two fets and a GDT to get more power but then I decided this single fet one works good enough.
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