>Rich,
>
>>The (voltage-amplification) gain formula only works with the parallel
>>load on the anode, which is a quantity far-removed from what one sees in
>>the Ls/Rs suppressor.
>
>
>Any two terminal network can be described at any frequency except zero
>in terms of either its impedance in terms of R series and X series, or R
>parallel and X parallel. The choice between the two, and the use of
>admittance rather than impedance, is merely to make the calculations
>easier.
As i understand it, in the Parallel World there are no R, and no X ohms.
Instead, there are G (conductance) and B (susceptance) siemens - which
results in Y (conductance) siemens instead of Z (impedance) ohms, as
would the case in the Series World. The stumbling block/'gotcha'/pitfall
is that, even though Y=1/Z, the process of conversion is not quite that
simple. For me at least, I still like to open the book for
re-enforcement when I do one.
IMO, there would be less confusion if, instead of labeling a parallel
Ls/Rs suppressor as 70nH and 100 ohms, it were labeled as 70nH and 0.01
siemens.
>
>>However, the effect is only apparent after one does the somewhat
>>labor-intensive calculations necessary to arrive at Rp. ... ... "Sums"
these are not, Peter.
>
>'Sums' is a term with a wide range of meanings, Rich.....
.....snip...
agreed. On this side of the pond, the range of meanings is somewhat less
impressive, Peter.
cheers
Rich---
R. L. Measures, 805-386-3734, AG6K
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