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In Reply to: RE: Current Flow posted by Triode_Kingdom on September 08, 2014 at 09:36:09
My apologies, the words we are using are confusing. I should have said the grid current "flows through" the grid bias supply, not that it "comes from" the supply.
Given what you are saying, the grid bias supply could be just a zener diode across the capacitor - all it has to do is absorb the grid current!
That was supposed to be funny, not a serious worked-out design. :^)
Follow Ups:
" the grid bias supply could be just a zener diode across the capacitor "
It still needs a negative supply to provide bias when grid current isn't flowing. I like the idea of a Zener for setting a ceiling on the voltage across the cap. Not sure how to adjust it, but it's a low parts count!
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Buy Chinese. Bury freedom.
As I said, not a worked-out design. :^) Lots of more complicated ways to do it; ultimately it's a shunt regulator. I think. Not a worked out design ...
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