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[Amps] SB220 transformer capability

To: <>
Subject: [Amps] SB220 transformer capability
From: "Steve Flood" <>
Reply-to: Steve Flood <>
Date: Thu, 8 Oct 2009 05:08:04 -0600
List-post: <">>
Currently I am powering my 3x813 amp with a homebrew power supply built around 
an SB-220 power transformer.  I have been keeping my plate current to 600 mA 
based on tube specs, although I've heard I can run the 813s harder than that if 

But I am wondering about the capability of the SB-220 transformer.  How much 
plate current is used in its intended application with two 3-500's?  

Steve KK7UV
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