I'm working on a project that involves the use of an automotive ignition coil to simulate electrostatic discharges. I've successfully assembled a circuit that generates a 220 VAC via the ignition coil. I need to rectify the 220 VAC to VDC. Specifically, I need to charge a coaxial cable to a high voltage potential. I purchased a high voltage diode (rated at 6000 VDC and 10 A) to convert the 220 VAC to a high potential on the coaxial cable. Unfortunately, in practice, the diode produces a negligible output voltage. I would think that the diode would quickly turn on and charge the coaxial cable to a high potential. The ignition coil doesn't produce more than 180 mA of output current. My theory is that 180 mA is not enough current to turn on the high voltage diode. I've always thought of diodes in terms of a "turn on voltage". But, perhaps a significant turn on current must be present to activate the diode. Is that true? I was considering buying a second high voltage diode rated at300 VDC and 200 mA. Perhaps that would be weak enough to activate and charge the coaxial cable. Am I using the wrong approach? Does anyone have any bright ideas?
Sincerely, Bradford Hunter