[Amps] original thread: Peter Dahl transformers, remark about capacitors for switching supplies

[Bill Turner]

ORIGINAL MESSAGE: 
On Wed, 03 Apr 2013 11:16:25 -0700, you wrote:

>In a conventional 3.2 kV HV supply that I've built for my new amplifier, I bypassed each 
>of the electrolytics with an 0.01 uf disc ceramic capacitor. My thought was that there 
>will undoubtedly be RF leakage back to the power supply, and especially on 160 meters the 
>regular bypassing of the HV line might not be adequate to keep RF out of the capacitors. 
>RF would be another source of heat that could shorten their life.
>
>It didn't occur to me that it might be possible to 'resonate' the capacitors at some RF 
>frequency and make the problem worse! I'm interested in the answer to this, too.

REPLY: 
Just a suggestion:  I think it would be better to focus on keeping RF out of
the power supply in the first place. Check with an oscilloscope to see if
there is a problem to begin with. You might be trying to solve a problem
that doesn't really exist. 

Even if the RF is there, the HV line should be easy to filter. 

My 2 cents. 

73, Bill W6WRT