[Amps] Parasitics & Filament Sag

[Steve Thompson]

R L Measures wrote:
> 
> On Sep 3, 2006, at 5:15 AM, Steve Thompson wrote:
> 
>>>>> Steve --- There are two resonant circuits in the output   
>>>>> circuitry,  one
>>>>> HF and one VHF. The HF (near)*-resonant part has a broad,  
>>>>> shallow   dip.
>>>>> The VHF part has a sharp, deep dip that can suck a dipmeter  out   of
>>>>> osc.
>>>>> when coupled too close.
>>>>>  Does make sense that the HF one rings and the VHF one does not  ring?
>>>
>>>
>>>
>>>> It does to me when I think about the time it takes to go from   
>>>> conduction
>>>> to cutoff with the usual bias switching in a g-g amp.
>>>
>>>
>>>
>>> Why would the rise/fall transient time be faster through the HF
>>> resonance than the rise/fall time through the VHF resonance?
> 
> 
>> It's not.
> 
> 
> Then why does one resonance ring and the other doesn't do a thing?
I think Monsieur Fourier explains it better than I can.

Steve