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I honestly couldn't believe it worked the first time I clipped it to the battery. Had some issues with arcing on the pins, which was solved by shorting out the 2 troublesome pins. Still trying to deal with the screen and focus leads arcing to each other. The only issue with the driver circuit is heat dissipation, which is still rather bad, even with the whole circuit sitting on a huge heatsink with a 12V pc fan aimed at it!
Ouput is pretty good, it'll start arcing at about 5-6 cm and has pretty intense vivid corona out to about 7.5-8 cm. I think it's pulling about 240W, not too sure though.
Anyway, here's the circuit diagram amd some arc pics:
Registered Member #4074
Joined: Mon Aug 29 2011, 06:58AM
Location: Australia
Posts: 335
Jamie Cansdale wrote ...
Beautiful photos! :)
Have you tuned it at all? What frequency are you running at?
Thanks, I borrowed my Dad's Nikon D3000 SLR.
I haven't done any tuning, and honestly wouldn't know where to begin. Same for the frequency, I don't have an oscilloscope, only a dodgy $20 multimeter, but you can still hear it as a clear high pitch whine, so I'd say close to 20kHz at a rough guesstimate. :D
I wonder if there's a way to put another flyback in the circuit with the primary's in parallel and the secondary's in series?
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My first flyback driver: finished and arcing
Results are very satisfying.... Big, fat, long 20cm arcs... mmmm... drool.