[Boatanchors] OA2 CURRENT

[rbethman]

Bill,

Is this a situation where the two are in parallel?  They could be in a 
fight with each other due to another component issue.

Just my thought!

Bob - N0DGN

Magoo wrote:
> I'm trying to troubleshoot what appears to be excessive current draw in a 
> P/S employing a pair of OA2s.  With all tubes out of the chassis, 
> approzimately 10ma is being drawn through the choke (in the ground lead) by 
> the bias supply.  When both OA2s are plugged in (with no other tubes 
> installed)  that current rises to about 90ma, and that seems excessive to 
> me.  Both tubes test OK.....but are they?
>
> B+ at source is 315 and each tube is fed through 4K; with no load I 
> calculate 7 ma for the idling current on each tube.  Is my logic flawed, or 
> am I dealing with a pair of tubes which test good but are actually bad?
>
> Bill VE3NH 
>