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Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
You are using a 555 driver circuit with a MOSFET? It might be that the frequency is a bit too low. Maybe try switching the polarity of the primary windings?
Registered Member #1394
Joined: Sun Mar 16 2008, 06:18PM
Location:
Posts: 111
No, i am not using a 555 and mosfet. I am using 2 resistors and a transistor hooked up to 2 differnt coils on the flyback.
Look at this schematic
Thats what i am using so i am positive that it is this transistor.
Its an inefficient driver but it gets the job done. I may not even need the flyback after i perfected my mod for the camera circuit it became a much easier and hassle free way of charging small capacitor banks.
If you don't know why its no big deal, i hate these transistors as i burnt out 3 of them already running them off 4 aa batterys lol! I need to get some really really beafy transistors.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
well the only thing I can advise you, is to try different coils with different polarity, because if you have 2 coils only 1 polarity combination out of 4 will work well.
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Flyback?
