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1. [Amps] SB220 filament (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Wed, 2 May 2007 14:33:50 -0400
It is VERY unusual to have a bad connection cause 4.1 volts without serious smoke. The reason is simple. The tubes draw 30 amps at 5 volts. That's 5/30= .17 ohms when fully hot The nominal voltage a
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