At 13:15 17.04.1998 -0600, John Lyles wrote:
>While we're on the parasitic subject (sorry to pump the ol' oscillators out
>there):
>
>I once had a disagreement with a competent RF designer of many years
>experience, who made big RF dielectric heaters using TPTG configuration,
>about parasites. He insisted that the oscillator could not have a parasite
>simultaneously and still work on the designed frequency. I said it could,
>that it could be simultaneously be making "non-harmonic" energy that could
>break things, or created uneven heating and hot spots. Also arcs around the
>tube and output electrodes. Does anyone have evidence to refute such
>advice? That an oscillator can, by nature, only work on one frequency at a
>time?And I don't mean XTAL oscillators but LC circuits and tubes.
>
I can't count how many oscillators I've built that initially were double-
or triple- your money (two or three frequencies of oscillation).
------------
Scott Townley
Gilbert, AZ
nx7u@primenet.com
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