Posted by Damir [ 213.202.96.143 ] on October 05, 2005 at 14:07:19:
In Reply to: Re: simplifying the Guinevere posted by manualblock on October 05, 2005 at 09:52:46:
Wayne said while ago (if I remember correctly) that his version would be with anode choke in the place of CCS, output from 5687 anode. The output resistance is rp in parallel with anode load (choke AC impedance), or simplified (if we assume large L / AC impedance on all "frequencies of interest"), about rp~2,3 kOhms.
Large resistor parallel to the output is mostly for "cap discharge path" and some load if we use the preamp without amp load.
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