6 Dec
2005
6 Dec
'05
5 p.m.
Chuck Guzis wrote:Wouldn't this amount to the same thing as putting a
hefty resistor in
series with a variac-controlled power supply with a
voltmeter on the supply
side? Start low--the resistor limits the current--crank the variac up bit
by bit until the desired voltage is reached. A fuse isn't a bad idea
either, in case the dielectric just plain fails.
It's worked for me. And my power supply isn't anything more than a
transformer connected to the variac followed by a full-wave bridge
rectifier--no filtering needed.
looks around ... better add a big hefty cap to that power supply as I
know you have at least one
kicking around :) Don't forget get to measure final voltage to your
cap plus 10% 20% ??? safety
margin. I also feel safe with new cap rather than a patched one.
Cheers,
Chuck