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Registered Member #1430
Joined: Sun Apr 06 2008, 11:12AM
Location: Ã…rhus, Denmark
Posts: 102
hey all. i recently need a 0-1000v powersupply so i built "the powerlabs flyback driver" to drive a custom coil to get pulsed DC a the same voltage as the input. it works really well, i tried making a coil and soldering an LED onto it and when i bring the two coils near each other the led lights up. now, my problem is: i tried feeding the pulsed DC to a reversed 9-230v transformer, i slowly turned up the inout voltage, but when the output voltage reached about 25v the clip leads attached to the transformer started buzzing loudly and the voltage dropped to 0. i turned the knob on my powersupply back a tiny bit and i was getting 25v with no buzzing again. can anyone tell me what is going on?
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