21 Jan
2012
21 Jan
'12
9:33 p.m.
On 01/21/2012 02:46 PM, Dave wrote:
For ham radio, as with anything else, it depends completely on the
specific application. A B+ (plate) power supply filter capacitor for a
2KW HF amplifier can easily be 3KV.
-Dave
--
Dave McGuire
New Kensington, PA
If you do the
reforming by simply throwing the capacitor on a
current-limited supply and not measuring anything (as seems to be the
usual method), then a completely defective capacitor may improve a
little bit but still be fundamentally broken, and still fail either
immediately or shortly after being put into service.
This really suprises me. I guess that the caps Radio Hams use may run at
higher voltages than those in vintage PSUs but the process has as I was
taught it was always to ramp up the voltage whilst checking the leakage.