This is more than just a safety choke. With out it the
small leakage current thru the Plate blocking capacitor would
would charge up the output capacitor to full plate DC voltage on
top of which will be the RF peak voltage. This can cause the
output loading capacitor to arc over.
Even if the plate blocking capacitor had no leakage there would
be some DC across the output capacitance. This is due to the charging of the
blocking capacitor thru the pi network capacitors when the B+ is turned
on.
If you suspect the "safety choke" don't simply remove it thinking it
is only there to protect equipment from failure of the plate blocking capacitor.
73
Bill wa4lav
William L. Fuqua III P.E. E-mail WLFUQU00@POP.UKY.EDU Phone (606) 257-4155
Department of Physics and Astronomy CP-177 Chem. Phys. Bldg.
University of Kentucky , Lexington, Ky 40506-0055
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