Re: Cathode Bias PushPull

On Tue, 22 Apr 2008 23:42:01 -0600, Robert Casey
<wa2ise@[EMAIL PROTECTED]
> wrote:

>
>> 
>> Rk = Vbias/(2 x idle)
>> 
>> Where Vbias is the desired bias voltage and idle is the per tube idle
>> current at that bias voltage, with the 2x because there are two tubes.
>> 
>
>A problem is that if one of the pair of the tubes hogs most of the 
>current, which can lead to red plates.

True, but I wonder how often that happens because a single Rk was
quite commonplace.