--- BunnyKiller <bunnikillr@xxxxxxx> wrote:
Hey Jim,
test the piggie using a hi current hi voltage
resistor 1KW @ 1KOhm (
wire wound dont work to well they simply arc over to
the next winding)
Scot D
I disagree. An ordinary wirewound power resistor is
as good as any in this application. A 1kohm power
resistor will feel no more than a few hundred volts
potential across the whole body of the resistor, even
if it is connected across the pig HV terminals. The
reason is as simple as Ohm's law. If a 1kohm resistor
passes 500mA of current, then it will have a potential
of 500volts across it--hardly sufficient to cause
turn-to-turn arcing on a big (100W or larger) one.
The pig simply cannot develop it's full HV potential
across such a low resistance. Besides, wirewounds
have been used for decades in vacuum tube equipment,
where they routinely handle 100's of volts of plate,
grid, and screen bias without failure.
Greg
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