[AMPS] Re: Parasitics

[measures@vc.net (Rich Measures)]

>>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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