The cut off frequency of this encoder's output?

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shaneelal

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low pass filter

I'm working on a project to determine the speed of a moving wire.I'm using an optical encoder to sense speed.The output of the encoder has some circuitry.What will be the cut off frequency? 1Hz? Which equation should I use to calculate R1 and C1. What value can I use for R2 and which comparator should I use?
Thank you.
 

Re: low pass filter

Pls post your attachments ...
 

low pass filter

if you use RC the wave is smooths.
you can use schmit trigger to waveshaping.
 

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