Posted by tnuctip [ 64.12.116.14 ] on December 19, 2004 at 07:39:54:

In Reply to: A pentode on the input circuit... posted by coyote on December 09, 2004 at 14:08:35:

Hey-Hey!!!,
The pentode can do quite a good job. Free from Miller capacitance issues. The g2 supply is critical, *VERY* critical I suspect. The load line must be done quite carefully so as not to run through the curves through below thte horizontal( or comparatively so )plate lines. With reasonable B+ this usually means a fairly low resistor values. 20k-40k depending on there you put the g2 voltage.
regards,
Douglas

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