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spark generator
Posted by Nick Williams on 10/22/2004, 3:32 am
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Re: spark generator
Posted by Bert Hickman on 10/27/2004, 6:09 pm, in reply to "spark generator" Hi Nick, Sorry for the delay in getting back to you. It sounds like you may have nsufficient clearance, or a small diameter wire or sharp areas that lead to corona and sparkover. Or, you may have surface contamination on the insulating material that holds the parts in place, And, it certainkly sounds like you are getting an abnormal high voltage spike during initial turn-on. A schematic of the driver circuit and/or some pictures of the unit would be extremely useful in order to pinpoint the cause(s) and propose fixes. The components seem to be properly rated for your system since the unit works properly for long periods of time. Its most likely that you have a problem with a nasty turn-on transient, combined with insufficient mechanical clearance. Could you provide a copy of the schematic? That should help us in understanding and fixing the turn-on transient problem. A picture of the assembled unit would help us address the potential clearance problem. BTW, the distance a spark will jump along the surface of a dielectric material can easily be 3-4 times longer than the distance it will travel in free air. Best regards, -- Bert --
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