Posted by Damir [ 213.202.97.22 ] on December 18, 2005 at 15:45:12:
In Reply to: Re: 300bPP amps posted by Tre' on December 18, 2005 at 13:51:03:
You have about Uak=250V - good, and just 100V across the CCS anode load. Voltage "swing" is 72Vp "through" the tube, and 72Vp "through" the anode load - you are very close to the 100V "edge", not counting necessary CCS voltage drop. If you can, rise the B+ for the driver to about 400V. And yes, lower Rk - lower Uak with constant Ia, 820 Ohms would result in Uk=-8,2V, Uak=220V.
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