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[Amps] HF2500 Power Supply Caps

To: <amps@contesting.com>
Subject: [Amps] HF2500 Power Supply Caps
From: "Jim Thomson" <jim.thom@telus.net>
Date: Mon, 7 Apr 2014 01:42:22 -0700
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Date: Sun, 6 Apr 2014 08:39:36 +0100
From: "Ian White" <gm3sek@ifwtech.co.uk>
To: "'Bill Turner'" <dezrat1242@wildblue.net>, <amps@contesting.com>
Subject: Re: [Amps] HF2500 Power Supply Caps

> Not all arcs happen ahead of the
>glitch resistor or the HV fuse.

Hopefully "ahead" was not what you really intended to write, Bill. The
glitch (surge limiting) resistor protects against arcs that happen
DOWNSTREAM toward the tube. The resistor will always help protect the
tube and the RF components against arcs occurring inside the tube or
anywhere in the RF section.

The correct location for the HV fuse and the surge limiting resistor is
directly connected to the top of the capacitor stack, so that it
protects the maximum possible number of components downstream.


73 from Ian GM3SEK

##    Agreed, then install  a 2nd HV fuse.... this time between the plate xfmr 
sec..either leg,
and the FWB....or doubler. 

Jim  VE7RF


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