Ian,
I'll have one last try to get my point across, then I'll admit defeat :)
Yes, you have been consistent in saying that "only the choke's
resistance is completely DEPENDABLE" for solving RFI problems; until a
few days ago I was consistently saying the same thing. Now I'm gently
challenging that wisdom for certain common choke applications.
If I have a choke with an impedance of 200+j5000, and it is being used
in a system where the CM reactance _must_ lie between +j2000 and -j2000,
it seems to me that the "net" j3000 Ohms reactance is every bit as
"dependable" as the 200 Ohms resistance. And the benefit is that the
reactive choke will dissipate only 1/15 the power of a 3000 Ohm
resistive choke flowing the same Icm.
There - now I really will be quiet ;)
Steve G3TXQ
On 24/04/2012 14:41, Ian White GM3SEK wrote:
>
> What I have said (and consistently, I hope) is that "only the choke's
> resistance is completely DEPENDABLE" for solving RFI problems.
>
> Your insight is a very valuable one, and it may well explain why even
> quite inferior on the test bench may work well enough in practice.
>
>
>
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