02-11-2023, 09:09 PM
(02-11-2023, 02:24 PM)boater sam Wrote: I am pleased to know that someone else has had the same thought.
How did you connect the 6V6 as a triode? G2 to Anode? Any parasitic stopper resistors?
The beam plates are already internally connected to the Cathode.
Any thoughts on the 4v to 6.3v transformer? I have a winder, I would hope to make it small enough to fit in an adaptor base.
Sam.
Sorry that was a bit lazy of me to describe it as triode connected.
Just G2 to anode.
I didn't need any additional stoppers in my particular case.
There was a bit of a mismatch ISTR with the output transformer but I still had adequate output.
The existing cathode resistor caused the 6V6 to run a lower anode current as well ISTR you need to be careful of that as sometimes the Cathode bias arrangement is also used for biasing other stages and AGC delay.
One day I will get around to making measurements.
This was all prior to 2018 I claim no originality for the idea I bought a set at Harpy with a 6V6 already installed but a proper job with the socket replaced and the biasing sorted it worked quite well.
Cheers
Mike T


It's rare and desirable




