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RE: Tube coil related questions
Carl,
Whats wrong with a string of 20 or 30 1N5408s, with 10M resistors for
voltage sharing? Its driving into a filter cap isn't it? Shouldn't have much
RF leakage back into the diodes, then... Heaps more current handling than
microwave diodes... Pot the whole thing in epoxy to make it compact. Super
cheap, and the potting makes it look more professional...
If you're going to use a couple of MO diodes in parallel, connect a 1R
resistor in series with each diode. This will help to distribute current
evenly between them. Simply paralleling them up ~might~ not do anything
useful if the diodes aren't well matched.
Chris
Original poster: FutureT-at-aol-dot-com
In a message dated 8/16/00 7:59:17 AM Pacific Daylight Time,
tesla-at-pupman-dot-com
writes:
>
> I have an 833A coil that has given great performance with one small
> problem: the microwave-oven diode that I use in my "level-shifted (or
> doubler)" supply gets toasted now and then. I believe John Freau has
> suggested, and probably correctly, that this is due to large RF kickback.
> Anyway, I wanted to eliminate this issue, and was thinking about other
> rectifier options.
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