In Reply to: Low cathode resistor bias posted by Doug Flynn on July 16, 2005 at 21:47:01:
This method can be combined with local NFB from OP tube plates to driver cathodes, if you don't use a coupling capacitor in the FB loop. A proportion of the current through the driver's cathode resistor is from the driver's cathode and some is from the OPT tube's plate (via the FB resistor).
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Follow Ups
- Re: Low cathode resistor bias - Ray Moth 07/17/0523:00:48 07/17/05 (0)