Bias circuit?

for Dynaco Mark II/III/IV and DIY PP monoblocks

Bias circuit?

Postby Blair » Tue Oct 09, 2007 3:56 pm

How much current does this circuit draw?

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Postby Ty_Bower » Tue Oct 09, 2007 4:18 pm

Well, the Poseidon schematic shows a 4.75K resistor, followed by a 10K pot and another 18K resistor. There's 75 volts at the top, so it must run at about 2.3 mA.

Add in whatever grid leakage you've got on your power tubes - hopefully not much?
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