[Heath] SB-200 problems...again...

[Kenneth G. Gordon]

On 19 Sep 2011 at 17:35, Wilson Lamb wrote:

> The resistor in series with the bleeder is for measuring voltage.

I disagree: I believe it is to provide a source for the milliameter 
reading by simply supplying a voltage drop, at whatever current is 
drawn. If that is the case, then the value of the bleeders would make 
no difference, since the voltage drop across it at the current drawn 
by the PLATE circuit SHOULD remain the same.
 
> Lowering the equalizing resistors will make the B+

...voltage...

> read high by the
> factor of reduction of the equalixiing Rs.  I expect the shunt should
> now be 30% of its original value. WL

I would agree if that resistor was used to provide the source for 
VOLTAGE measurement, but not if it is to provide the source for 
CURRENT measurement, which in this case, it is.

Thanks for the thoughts, though. Much appreciated.

Ken W7EKB