[Amps] HV rectifier strings - to bypass or not?

[Carl]

Basic filtering is already in place to prevent RF from getting into the AC 
line. Many hams do not use an earth ground to the chassis and going to a .01 
line to chassis bypass can give a nice tingle at 240V when you interconnect 
floating cables.

However a suitable commercial type 240V 20-30A suppressor is large, and 
expensive if bought new. I have a 50A computer surplus one from a DEC 
mainframe, installed at the main panel which feeds 2 amplifier outlets. The 
other 240V lines into the shack and the workbench are unprotected until I 
locate more filters. These commercial filters mandate an earth ground.

The computer manufacturers thought enough about having clean AC so I dont 
understand why a few hams are arguing the subject. Spikes can cause damage, 
plain and simple.

Carl
KM1H



----- Original Message ----- 
From: "Steve Thompson" <g8gsq at f2s.com>
To: <amps at contesting.com>
Sent: Sunday, October 31, 2010 3:37 AM
Subject: Re: [Amps] HV rectifier strings - to bypass or not?


> If there's a problem with spikes on the line, isn't it better to
> get rid of them with filtering at the line input so they don't
> reach the transformer in the first place?
>
> Steve
>
> > -----Original Message-----
> > From: Carl [mailto:km1h at jeremy.mv.com]
> > Sent: Saturday, October 30, 2010 8:44 PM
> > To: garyschafer at comcast.net; 'Jim Thomson'; amps at contesting.com
> > Subject: Re: [Amps] HV rectifier strings - to bypass or not?
> >
> > You dont want intense line spikes going thru electrolytics.
> >
> > Carl
> > KM1H
> >
> >
> > ----- Original Message -----
> > From: "Gary Schafer" <garyschafer at comcast.net>
> > To: "'Jim Thomson'" <jim.thom at telus.net>; <amps at contesting.com>
> > Sent: Saturday, October 30, 2010 9:28 PM
> > Subject: Re: [Amps] HV rectifier strings - to bypass or not?
> >
> >
> > > 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
> > >
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