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Old 01-22-2017, 06:05 PM
old_coot88 old_coot88 is offline
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Join Date: Sep 2009
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I can't pull up the schematic on my (Linux) rig, but am curious as heck about that series/parallel filament wiring. Presumably it's running from B+ thru a dropper. If so, then if one string goes open, then the other string will have twice the voltage on it. A zener would be great for protection, but there were no zeners when the radio was made. Just bein' curious.
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