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Re: [Amps] SB 220 Exploding Resistor

To: "amps@contesting.com" <amps@contesting.com>
Subject: Re: [Amps] SB 220 Exploding Resistor
From: Bryan Swadener via Amps <amps@contesting.com>
Reply-to: Bryan Swadener <bswadener@yahoo.com>
Date: Mon, 18 Jan 2016 21:11:10 +0000 (UTC)
List-post: <amps@contesting.com">mailto:amps@contesting.com>
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
   
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