All you need for plate filtering is about 20 uf or so. Excess uf are
discharge current you
do not need.
The statement that "Joules are good if you are converting them to RF."
is not true when talking about tube flash over conditions (rockey point
effect).
As example .... We need 1 amp of current to run our gadget and we are using
a car battery to supply the current. The gadget works fine cause we have
the 1 amp
and the 12 volts... but our gadget shorts...we now have BIG amps to burn
things up.
The BIG amps is the same as the stored joules in the caps.
The series resistor will help... BUT it is my opinion that a wire fuse is
not fast
enough to save you from damage.
Will you blow things up every time.... probably not, but every time it happens
you stress components and then disaster.
The less the uf (joules of stored energy) the less strain on components
and therefor
the less chance of damage if you get a flashover.
Norm N8NH
At 08:11 AM 6/30/03 -0400, you wrote:
>??
>
>Joules are good if you are converting them to RF.
>
>On 29 Jun 2003 at 17:43, Conrad Farlow wrote:
>
> > Put 10 in series and you have a whole lot of joules to deal with in
> > the event of a flashover, bad idea IMO.
> >
> > Conrad G0RUZ
> >
> > FOR SALE:
> >
> > ELECTROLYTIC CAPACITORS
> >
> > 2500 uF at 450V new, top-grade caps.
> > Cornell-Dubilier 400c series.
> > 4" tall, 2" diameter.
> >
> > Put 10 in series and you have 250 uF at 4500V DC
> > Put 20 in series and you have 125 uF at 9000V DC
> >
> > Pricing:
> > QTY 20 or above at $10.00 each
> > QTY 10 or above at $12.00 each
> > QTY <10 at $15.00 each
> >
> > Shipping Additional
> >
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> >
> >
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>
>
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