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In Reply to: HD83 schematic mistake??? posted by natko on February 18, 2002 at 01:32:26:
The DC path for the cathode is through the 1K and the feedback winding. If you assume about 22 ohms for the winding then the 0.88mA plate current and cathode current match. The RC form part of the AC feedback path.
My 2 cents.
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