[Amps] grid resonance

[TexasRF at aol.com]

In a message dated 8/7/2006 10:34:24 A.M. Central Daylight Time,  
philc at texascellnet.com writes:

>  >Ian,
> >Are you saying that a GDO can only dip a  "circuit?"
> 
> I'm saying you can't even have an L-C resonance  without a circuit -
> literally a closed, hard-wired loop.
>  
> For example, if you simply connect an L and a C in series, with  opposite
> ends floating, you don't have a closed loop so you don't have  a resonant
> circuit yet.  Before you can see a resonance and a  dip, you must make
> some other connection that closes the loop and  completes the circuit.
> 
> But the resonance then belongs to the  entire circuit you have made - not
> just the obvious inductor and  capacitor, but also all the strays that
> you don't know about.
>  
> That requirement for a hard-wired circuit only begins to break down  if
> components are physically large enough to have significant
>  electromagnetic interactions between different parts of themselves -
>  antennas being the obvious example, and large anode chokes being
>  another.

I agree with all of the above. Someone should have said this  about 75 posts
back to enlighten the multitudes of readers on the  reflector. About 50% of
the questions would not have had to be  answered.

Now here is the biggie that caused this thread....is the grid  on a 3-500Z
physically large enough to fall into "significant  electromagnetic
interaction" category, or is it in the "hard-wired"  category, or none of the
above?

(((73)))
Phil Clements,  K5PC



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Or perhaps "all of the above"? When in standby, "hard wired" and when grid  
current is flowing "significant electromagnetic interaction" categories?
 
Just when we begin to think we know everything it becomes apparent we  really 
know very little about this stuff.
 
73,
Gerald K5GW