[Amps] SB 220 Exploding Resistor

[Bryan Swadener]

I replaced RFC2 with a Ohmite pn B20J10RE (10 ohm / 20W) vitreous enamel wirewound resistor. It JUST fits.

Bryan WA7PRC 

 
     Date: Sun, 17 Jan 2016
From: Carl KM1H
Subject: Re: [Amps] SB 220 Exploding Resistor

That blown resistor may have been underated and blew during a tube arc. The 
idea of a surge suppressor is to not fail and allow the milliseconds for a 
fuse/breaker to open.

A 10-15 Ohm 20-25W Real wirewound resistor will cure that problem. Look for 
Vitreous Enamel in the description.

Carl
KM1H