[AMPS] Re: Parasitics
Rich Measures
measures@vc.net
Fri, 15 May 98 03:36:03 -0800
>>In an amplifier that is properly tuned and not underloaded and into a
>>known good antenna with no intermittents, no relay problems or any other
>>excuse....why would it suddenly arc the bandswitch while being operated?
>>Assume the original design parasitic suppressor is in place and known
>>good.
>
>I'll try...
>
>Is it perhaps that the Q of the tank circuit is very large?
The Q in the typical ham amplifier is nowhere near very large. 10 to 12
is common.
>Larger Q will cause the voltages to be higher. And perhaps at the same time
the
>switch that is used is really under-rated?
The output bandswitches in the TL-922, AL-80, and SB-220 have a
withstanding ability of roughly 6000v.
Rich...
R. L. Measures, 805-386-3734, AG6K
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