[HomeBrew] high fil B+

[brewerj@squared.com]

"Phil T." <phil@vaxxine.com> mentions:


"The only minor concern I see with the project is that the voltage doubler
is likely to provide  16 to 18 volts DC for the 1629 filament - guaranteed
to shorten the life of a 12.6V tube dramatically. Now that isn't going to
matter much if the radio is only used for a few hours here and there. But
we should be aware of it just the same."

Perhaps this is a good spot to paste in a 7812 regulator. The coolness of
the hollow state tuning eye, will surely offset the use of a "three legged
fuse" in this BA application!
:-)

73
John wb5oau