I have been reading with interest about the filament chokes for
3-500Z,
etc. In the photos I've seen of projects the filament choke appears
to be
bare wires around the ferrite rod. Am I seeing this correctly? How
does
this not short out and thereby not provide current to heat the
filaments?
Or is this wire typically coated with some kind of insulating
material.
The wire is insulated with an enamel coating.
There is nothing magic about the ferrite rod. A torroid will also
work fine.
Henry uses torroids on some of its models where space under the
chassis is at a premium.
(((73)))
Phil, K5PC
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