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In Reply to: Durn it... -> CCS? posted by str8aro on October 29, 2001 at 21:13:10:
The rule of thumb I've been using on the output stage is... Set the voltage on the pentode CCS equal to the plate-cathode voltage of the output tube. This gives you the compliance you need plus some margin.On my 45 amp I have 180V across the cathode resistor to setup DC coupling, 275 Plate to Cathode on the 45, 275 across the 6bq5 pentode CCS.
Have fun!
Gary
Follow Ups:
Thanks guys - you've given me plenty of stuff to think about.John
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