[AMPS] RF filament choke for indirectly heated cathodes?

[Kevin Balmforth]

I've noticed something strange in amp articles
featuring indirectly heater cathode tubes like the
3CX800A7 or 8877.  Some have a bi-filar choke in the
filament line, while others feed the filament directly
from the filament transformer.  A variation of the
latter is grounding one side to provide a return
through the chassis, and bypassing the live side to
ground with a .01 uF disk (Ten-Tec does this on the
Titan).`What's the best approach?

73, Kevin

__________________________________________________
Do You Yahoo!?
Send instant messages with Yahoo! Messenger.
http://im.yahoo.com/

--
FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com