[Amps] Dual tetrode in grounded grid

[Glen Zook]

A couple of others pointed out the common cathode problem to me in direct E-Mails as well as the beam forming plates.  As such, back to the original push-pull design!

Glen, K9STH

Website:  http://k9sth.com


--- On Wed, 2/11/09, Gary Schafer <garyschafer at comcast.net> wrote:

The other problem with it is you can't run the plates in push pull and drive the common cathode as it will cancel the output. You would need to run the plates in parallel but then there is the problem of the beam forming plates as others have mentioned.