[Amps] GU74B in GG configuration
gdaught6 at stanford.edu
gdaught6 at stanford.edu
Tue Aug 28 14:20:42 EDT 2007
On 28 Aug 2007 at 10:38, Andy Pfeiffer wrote:
> I am planning to retube an older amp and I have two GU74B tubes at
> hand.
>
> Can they be used in GG configuration?
Yes, they can be used in GG configuration. But DO NOT tie the grids
together and treat the GU74B as a triode! The control grid will draw
way too much current, and be destroyed. The correct screen voltage
must be applied or the tube will be killed in short order.
73,
George T. Daughters, K6GT
More information about the Amps
mailing list