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Re: Crockcroft Capacitors
Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>
> Original poster: "Mike Harrison by way of Terry Fritz
> C-W multipliers don't have any particularly onerous requirements for
> the caps, compared to marx generators or tesla coils, so pretty mucg
> any type will usually work well. Obviously at higher frequencies,
> things like inductance and stray capacitance will become an issue, but
> you'll porbably have problems with diodes before you need to worry too
> much about caps.
> Theonly other possible issue is damage tolerance - a short or spark on
> the output could cause a very high current pulse, which could perhaps
> damage particularly fragile caps (e.g. very thin metallised plastic).
Put series inductors/chokes or resistors in the stack to limit fault current
in the event of a flashover... Obviously, chokes would be preferable (lower
loss)... a few turns around a toroid core might be sufficient... Run the
numbers and see..