DC Wave Questions

Hey JackBruce I got fed up with the crap the other posters wrote about your terminology, and did not really see if anyone actually answered your question, Which, by the way, Was very easy to understand. Ignore the other jackasses here, that nitpick. They have too much time on their hands, i can see.

Question 1 The impedance of inductors and reactors is based on the varying signal frequency, Weather it is offset by the DC component or not. This answer assumes that you are not reaching the current limit of any of the devices, naturally if the DC Current in the "L" Device saturates the Flux medium ( air or iron) then you will get non linearities introduced, Not sure what the limit on a "C" Device would be, probably current again.

Question 2 The link didn't work but most of the modern devices looking for peaks and valleys work fine with a DC Offset.

Tom Grayson

I've just noticed this 'long' thread. It is of interest to me as I had a not dissimilar problem. The use of superposition is absolutely correct in a linear system where the system component values do not vary with the signal applies. However, when applying the ac component the skin effect phenomenon will deplete the current carrying carriers from the centre of the conductive component thus reducing the effective cross sectional area......which will also effect the dc resistance....or will it?

Danny

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No, it won't. However, it does appear have affected superposition of your thinking processes. ;o)

It will not. Each frequency component will work independently of others. The modification of resistance by heating is a nonlinear effect that will couple different frequencies.

Bill

-- John Fields Professional Circuit Designer