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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: Platitudes! Science! Audio Religion! Politics! $ales! posted by Dave Cigna on July 1, 2006 at 09:24:26:
Dave,You are correct about it being TOUGH to get loop NFB right. Stu Hegeman could do it "falling out of bed", but he was 1 very special dude.
I'd like to think that the NFB loop in "El Cheapo" performs well. The loop is only around 2 stages and pains were taken to avoid phase shifts. There is but 1 cap. inside the loop and the feedback resistor is non-inductive. Starting with a reasonably linear open loop circuit helps too.
Eli D.
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