Why place a capacitor across each diode string on a full wave bridge? The
filter capacitor is always across the transformer secondary.
73
Gary K4FMX
> -----Original Message-----
> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
> Behalf Of Jim Thomson
> Sent: Saturday, October 30, 2010 7:58 PM
> To: amps@contesting.com
> Subject: [Amps] HV rectifier strings - to bypass or not?
>
>
> ## KM1H came up with a better method... and that's to install one HV
> disc ceramic
> across each leg.....so 4 x caps in all. The purpose of these 4 x caps
> is to bypass any
> junk/transients coming in off the street. Of course the V rating has to be
> high if a single
> cap is used. You can get disc ceramic caps in 4700 pf @ 10/15 kv
> variety. [ Ceramite brand,
> sold by mouser+ henry radio still has em]. IF .01 uf caps [10,000 pf]
> installed across each diode,
> and 8 x diodes used, you only have 10,000/8 = 1250 pf effectively
> across each leg. If individual
> caps used, .02uf @ 1 kv would be better. IMO... 4 x big caps, one per
> leg, is more effective, and
> messier than 32 x caps.
>
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