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previous: Bill I read about the technology of a TS... -- 7/11/2000 4:57 PM

Re: RC Filters

7/11/2000 6:40 PM
R.G.	Re: RC Filters The units are ohms, hertz and farads. This comes out to (1/F)= 2 * pi * (.000000047Farad) * (4700 ohms) = .001387 Sec F = 720.8Hz. You can play games with the decimal points. If you use C in uF and R in megohms, you get F = 1/(2pi.047uf*.004700M) = 720.8Hz But I prefer not to mess with remembering special cases of uF/Mohm, etc. Just do it in farads and ohms and keep the decimal point straight.

7/11/2000 6:40 PM

R.G.

Re: RC Filters

The units are ohms, hertz and farads.

This comes out to
(1/F)= 2 * pi * (.000000047Farad) * (4700 ohms)
= .001387 Sec

F = 720.8Hz.

You can play games with the decimal points. If you use C in uF and R in megohms, you get

F = 1/(2*pi*.047uf*.004700M) = 720.8Hz

But I prefer not to mess with remembering special cases of uF/Mohm, etc. Just do it in farads and ohms and keep the decimal point straight.