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Hi, i have quite a uniqe problem i never got before - my TC is dead.
Secondary is 145 turns on 4cm dia pipe, primary is 3.9 turns around 4.5 dia.
It was running happy, i was choosing my resonant caps (somewhere between 2-3nF), i am using single switch mosfet irf640.
Problem is, when i changed caps few times, now it suddenly wont run ( in beggining, it run even without it quite nicely), now its "dead" and i cant get it resonant no matter what i do.
driver board is antenna feedback, and is good, i tested it with bigger TC and it was ok.
I even got a new coat on secondary as i heard some strange noises when it starting to do unusual behaviour ( i thought of flashovers, as primary is really close to secondary, only 1mm+ cable insulation), but not helped.
capacitor is in parallel with primary coil, i think its not DRSSTC (as i seen only serial connection in DR)
mosfet and everything was ok (until today when i destroyed it), as i tried to interrupt power - halfwave rectifier, it worked but really badly (only 1 mm spark few times).
I calculated resonant frequency (well the program did ) first through MANDK, then java TC - to get appx. cap value.
Maybe i try another mosfet (irfp 460 with little driver board tweakout - to get more amps to fet).
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Mini SSTC wont run
) first through MANDK, then java TC - to get appx. cap value.