>
>Can anyone suggest what voltage should be used for bias on todays tubes. As
>in Chinese, Russian, USA 572-B tubes. I'm brewing a quad of 572's, mounted
>vertically, if that makes any difference. I'm using an older schematic and
>it suggests 2.0 volts. However I have read several posts suggesting anywhere
>from 2.0 to 24.0 volts. Which is correct and why? Ive built several 811
>amps
>but this is my first 572-Beast. Is there a chart that anyone has designed
>with these voltages on them, just a suggestion. Well thats it from here, can
>anyone straighten me out. As always thanks in advance. Kurt, K3KL...
>
The correct bias is whatever it takes to produce the right Zero Signal
Anode Current. A pretty good semi-adjustable bias regulator is a string
of forward biased 1A diodes. Adjust the ZSAC by shorting diodes.
>--
cheers
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