SB-221

[Mark Graalman WB8JKR]

 The amp will work fine without it, but the idle current will be
higher than normal increasing heat from the tubes and the
power supply, I think it was a 6.8 volt 10 watt zenner, but I
don't remember for sure. At any rate, a 6.8 volt 10 watt
device would work fine.

73,  Mark  WB8JKR


On Wed, 14 Aug 2002 09:42:06 -0800 Tom Elmore <tom at TELMORE.COM> writes:
> I have a SB-221 amplifier that is missing zener diode ZD-1 and it
> appears it may have never been installed
> although the amp seems to put full power out. The only thing I don't
> seem to have is idle plate current that the book calls for. Any
> ideas ?????
>
>
> Thanks
> -Tom / KA1NVZ
>
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