[Amps] L4B biasing

[Vic Rosenthal]

According to the 3-500z data sheet, this should be fine. The 200 ma seems a little low, but I guess it depends on the tubes. You should make sure that you can get rid of the heat.

Vic K2VCO /4X6GP 

> On Dec 24, 2014, at 10:52 PM, mike via Amps <amps at contesting.com> wrote:
> 
> I just finished me Drake power supply. I used a Drake transformer and a doubler board with 8 caps. I have 2600 volts showing on the high voltage meter. I have eliminated all the bias circuit in the power supply that Drake used. At idle I show  200 mills of plate current. My question is should I add a bias circuit? I purchased a W4ZT board but wonder if I need it. Thanks and Happy Holidays to all.
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