Steve says:
>The suppressor works in series from the anode to the tank circuit, so it's the
>series equivalent that's most useful in visualising what is going on.
Especially when you remember that if the anode circuit parasitic resonance is
lower in frequency than the grid circuit parasitic resonance, the thing won't
oscillate anyway.
For what it's worth, my feeling is that the series inductance lowers the main
parasitic frequency of the anode circuit below that of the grid circuit. By
reducing the Q of the parasitic circuit, the amount of loading needed is
reduced., because the gain at the parasitic frequency is reduced.
I have not yet seen any analysis which shows why the XL of the suppressor should
be designed to equal the shunt resistance of the suppressor at any particular
freqeuncy.
73
Peter G3RZP
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