Re: Phev Insight
Pulse width does NOT equal Frequency. Frequency is measured in cycles per time period and pulse width is measured in time period. The two could NEVER be equals. There IS a relationship however.
IF the pulse width is the width of a symmetrically repeating pulse, then it can be said that the pulses per time period is the frequency, but not the pulse width itself.
If the pulse width desired is longer than the pulse width of the noise, then you can build a digital filter that looks at the pulse width of the incoming pulse and if it is less than the desired pulse width it is NOT passed through. It has nothing to do with frequency...or at least very little to do with frequency. On the other hand a capacitor/resistor/inductive filter IS very much about frequency.
__________________
Jim Isbell
2000, 5 speed, 250,000 miles
"If you are not living on the edge, well then,
you are just taking up too much space."
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