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
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