[R-390] CAPACITOR FIGHT

[David Wise]

Down in the millivolts, I think.

Correct me if I'm wrong, but I believe the resistance is low, which means that nothing can shunt away a current surge.

Dave Wise

-----Original Message-----
From: John [mailto:jlkolb at jlkolb.cts.com] 
Sent: Monday, August 04, 2014 6:23 PM
To: David Wise; R-390 at mailman.qth.net
Subject: Re: [R-390] CAPACITOR FIGHT


What RF voltage is across the filter?  Anyone ever
consider protective zener diodes?

John
KK6IL

On 8/4/2014 2:13 PM, David Wise wrote:
> I tried to calculate the reliability of film/foil vs. ceramic for C553 and got unclear results; it depended on the method I used.  Both types had a definite voltage derating effect; if you pick something rated at 1kV or more, it's overwhelmingly likely that your cap will outlast many generations, which realistically speaking is so far in the future it's meaningless.