[Amps] plate choke

[Michael Tope]

----- Original Message ----- 
From: "Bob Maser" <bmaser at tampabay.rr.com>

> Yes but how many times do you need to hear the answer?
> Bob W6TR

> ----- Original Message ----- 
> From: "KD7QAE" <KD7QAE at ARRL.NET>
 
> 
>> Perhaps it is boring to you but for new builders (like me) it is quite 
>> interesting.!
>>

What answer? I still don't know if typical single-layer plate chokes 
rely on a parallel resonance to acheive suffcient low-end choking
impedance; I still don't know if the impedance vs. frequency curves
for typical single-layer plate chokes look similar to the multi-layer 
"pie-wound" plate chokes like the ones illustrated in Orr's handbook
which show peak impedance values in excess of 1 megaohm across
a very broad frequency range; and I still don't know what, if any, 
analytical models exist for a single-layer plate chokes (aside from way 
oversimplied 3 element lumped RLC models). As to whether or not I 
could buy a store bought choke from RF parts that would work in a 
typical PA design or whether or not stray layout capacitance effects 
the ultimate position of series resonances, thus requiring one to measure
the choke installed in-place, I already knew the ansswer to those 
questions before this thread began :):)

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