Re: MO Caps

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Matthew Smith by way of Terry Fritz <twftesla-at-qwest-dot-net>" <matt-at-kbc-dot-net.au>

Hi Mark

MO capacitors simply aren't designed for pulse duty - use them as filter 
caps in MOT based power supplies, sure.  (They are on a fairly 
non-strenuous voltage doubler duty; even then they fail in service.)

Look at the current rating on one of them (often marked), then think of 
the currents flying around a TC tank circuit ;-)

Cheers

Matthew "Not even wearing body armour and in a concrete bunker" Smith

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<A123X-at-aol-dot-com>

I know occasionally this topic comes up of whether or not microwave oven 
caps
can be used in a TC as tank caps. I think one time when it came up it was
decided that some MO cap manufacturers use bad rf dielectrics and the caps
will explode in a tank circuit but other manufacturers use dielectrics that
can handle rf better. I was just wondering if anyone knows what types might
be good and what types bad. Are GE microwave oven caps made with bad
dielectrics or good ones?

Mark