[Amps] Parasitics & Filament Sag

[Michael Tope]

----- Original Message ----- 
From: "R L Measures" <r at somis.org>

> On Sep 4, 2006, at 2:03 PM, Michael Tope wrote:
> 
>>
>> ----- Original Message ----- From: "R L Measures" <r at somis.org>
>>>>> shows  that it is resonant about 7% lower in frequency.
>>>>>   If an L-network was resonant on the operating frequency,    
>>>>> infinite  current would flow through it because the reactive   
>>>>> components are  equal, opposite, in series, and not in parallel.
>>>>
>>>> Rich,
>>>> Unless the effective parallel R across each component is zero,
>>>> this can't happen.
>>> What caused the dip?
>>
>> Even a resonant circuit with finite loaded Q will store energy and  
>> cause a dip. There is no need to invoke an infinite Q resonance to  
>> have a dip.
> 
> This argument has become much adoo about virtually nothing.
> 
>> 73, Mike W4EF........................................
>>

Perhaps, but your claim that infinite current will flow if an L-network
if it is tuned to resonance at the operating frequency is simply incorrect.
If that were true, tuning an amp would be a lot more dicey than it is. 

73, Mike W4EF.....................................