[Amps] Parasitics & Filament Sag

R L Measures r at somis.org
Sun Sep 3 07:59:35 EDT 2006


On Sep 2, 2006, at 11:57 PM, Peter Chadwick wrote:

> Rich said:
>
> > L-networks are resonant only when they are doing
> Infinite Z-transformations, I refer to them as near-resonant or semi-
> resonant circuits.<
>
> Only because of your definition of resonance. For other, more  
> mathematically rigorous definitions, L networks are resonant.

  Not according to a dipmeter.  For example, when a lo-pass  
configuration Pi-network with a Q of 10 is tuned up, a dipmeter 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.
> 73
>
> Peter G3RZP

R L MEASURES, AG6K. 805-386-3734
r at somis.org





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