=20
> A PWM Signal is a turning on and off of a DC voltage, in the
> case of a PIC,
> 0 to 5 volts. A coupling capacitor is used to block that DC
> component and
> pass the AC component.=20

Yes, you are correct.  I really need schooling in electronics.  If you =
are correct in what you say, and I of course assume that you are, then I =
need to learn the basics better.  I work full time, so my only recourse =
for learning is spare time, books, internet, lists (like this), and the =
kindness of strangers. =20

But just to show you how ignorant I am about electronics, I think that =
PICS and things with batteries are all DC and that AC is another beast =
that I only have to worry about if I want to use the power from the =
walls.  (Which I'm afraid of for personal safety reasons.)

But how a PWM can be AC and DC I just don't get... yet.  I will. Thanks =
for your help.

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=20

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