Fnord wrote:Holy crap JSR you actually got a flyback working on your first try? That is indeed a win.
Well, I did have a very supportive forum that held my hand along the way
Be careful with the input voltage. My first try worked fine with 9 volts but fried quickly with 12.
What fried exactly? I have a pretty big heatsink on the transistor, and now included a 12V fan in the circuit in parallel, should be fine right, or is it a question of voltage, not current?
Here's a beefed up version that may help out if your current setup proves ineffective. You can probably fine the 25v capacitor in your junk somewhere. Exact valves aren't critical. The diode should be an ultra-fast recovery type and the 200v capacitor should be a high-quailty foil-film cap(they usually look like plastic boxes).
Interesting... though would I be stressing a potentially delicate system out?
You may want to buy some transistors eventually, in this case I found a 2n3773 works well.
This is really a "temporary" setup for static testing, I think I'll invest in the smaller commercial ignitors mentioned in this thread for actual installation in launchers, assuming the power increase of higher mixes makes it worthwhile.