[Amps] .01uf caps across diodes ?

[Fern Rivard]

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 jim.thom at telus.net 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
> type.
>
> 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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