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30KV Power supply / Generator

2014-11-03 06:20  
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Easy to build, this high voltage generator is capable of generating up to 50KV but the breakdown voltage of the coil limits the voltage to a value somewhat lower. T2 is the ignition coil of a car and also the 0.5µF capacitor comes from the same place: actually I suggest using only this type of capacitor. T1 is a small transformer with a laminated iron rod, with a square section of 7x7mm, 57mm long with 75 turns on the collector side and 25 turns on the base side made with a 1mm enamelled wire. Its implementation is not critical and I expect that the circuit will work with a wide variety of transformers including ferrite ones. visit page.30KV Power supply / Generator - schematic
Try to invert one of the windings if the circuit does not oscillate. The transistor will stay quite cool and does not require a radiator if it is assembled on a metal case; otherwise a small 5ºC/W radiator will suffice. Frequency of operation is around 1.2KHz. visit page.