[Amps] Verify "Q"

Ron W4BIN ka4inm at gmail.com
Thu Oct 14 17:52:35 EDT 2021


    Joe WB9SBD wrote:

> Lots of reading, LOTS of help from others here. This should be the last 
> bit of questions I have the need of help with.

> When doing the like reverse plate load simulation test.  I have been 
> told, and have read, both things when doing the test, some have said to 
> lift the plate connections off the tubes.  While others say that they 
> need to still be connected. So what way is it?

> What value of "Q" should one desire to have?
> 
> And once the amp is thought of to be set up with that desired value of "Q"

> Is there a way to measure this value of "Q"?

   The tube's plate capacitance is part of the tank circuit, I think it
should be included in tests.

   Beside "Q meters," some VNAs do, I don't think mine does.  (directly)
-- 
    Ron  W4BIN - Understanding is much better than
                                      knowing how.U


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