Ned Konz wrote:
> On Saturday 12 April 2003 12:42 am, Mike Singer wrote:
> >    By definition R and C should discharge to 1/e value
> > over 1 second. Where did guys get 2*Pi, I don't know.
>
> If you look at the frequency response of the RC filter, you get an
> expression with the frequency in radians per second in the
> denominator.
>
> To get from cycles/second (Hz) to radians/second you need 2 * pi...
>
> So the 3dB down point (in Hz) of the RC filter is at 1/(2*pi*RC)
>
> or at 1/RC, if you want to talk in terms of radians/second.


This isn't sinusoidal signal, at first.
At second, what should be done with all these things
to figure out the value of a ripple?

   Mike.

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