Replying to my own message,
Vic Rosenthal wrote:
>
> measures wrote:
> > Put the windings in series and you have a CT.
>
> But then the "CT" is unbalanced with respect to each tube, since the filaments
> have to be in series too. How is this different from putting them in parallel
> and connecting the b- return to one side?
But, Vic, you dummy, the hum modulation of the one tube is exactly out of phase
from that on the other tube! Duh.
Sorry, Rich (and others), you guys were right. The series connection will not
produce hum like the parallel connection w/o a CT.
73,
Vic, K2VCO
Fresno CA
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|