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Re: [Amps] .01uf caps across diodes ?

Subject: Re: [Amps] .01uf caps across diodes ?
From: Fern Rivard via Amps <>
Reply-to: Fern Rivard <>
Date: Tue, 29 Nov 2022 22:45:46 +0000 (UTC)
List-post: <>
Hey Jim, that's old crap. The older style diodes needed those caps across them but the newer style ones that have been out for years don't require that anymore.

Fern  VE7GZ

On 29/11/2022 12:28 p.m., jim.thom wrote:
What's the consensus on wiring .01uf disc caps across diodes in a HV supply
W8JI sez they are required, and used in ameritron amps....and used to
eliminate switching transients.

Some say the caps are required to meet emc specs on commercial gear.

I can't see how anything can get past the HV fitter caps.

KM1H also uses caps across diodes.  He also used another method, with a
.01uf cap across an entire series string of diodes, like a .01uf @ 5 kv

Orr's books recommend caps across diodes... to eliminate noise on TX on
ssb. .

Are they required...or not ?

Jim  VE7RF
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