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In Reply to: Re: Design of the SLCF, for Paul posted by Paul Speltz on September 8, 2001 at 07:00:41:
I would like to re-phrase your response in language with which I am comfortable, in order to see if I get the point you made: Ripple from the negative-300V supply will pass thru the 0.47uF capacitor and modulate the grid of the CCS tube section, allowing the current thru the CCS tube and across its cathode resistor to remain constant despite any fluctuations in the negative supply voltage. Yes? Conversely then, if one is using a voltage divider network (no zener) to set the grid voltage of a cascoded tube section, one should use a bypass cap from the grid to ground, as per convention, since one does NOT want power supply ripple to appear at the grid of the cascode. (The cascoded tube is driven only via its cathode, as a "grounded-grid" voltage amplifier.) Yes?
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Follow Ups
- In other words... - Lew 08:37:01 09/10/01 (1)
- Yes, and Yes. (nt) - Paul Speltz 10:34:06 09/10/01 (0)
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