[Amps] R. MEASURES PRAYERS ANSWERED

[R L Measures]

On May 31, 2006, at 9:30 AM, Peter Chadwick wrote:

> Provided that the grid parasitic tuned circuit is resonant at a  
> higher frequency than the anode parasitic tuned circuit, the  
> amplifier will be stable. Unless Terman got it wrong........

Terman was right.  The 3-500Z grid resonates below the anode  
resonance in the SB-220. TL-922, 2K-4, 3K-A, on and on and on.
   Has anyone ever measured the grid resonance of an 8877?

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R L MEASURES, AG6K. 805-386-3734
r at somis.org