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cut off frequency of RC filter?

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seyyah

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rc cut-off frequency

What's the cut off frequency of this circuit?
 

If what you meant is applying an input at the left side of R1 and check the output at the right side of R1, you get a low pass filter with DC gain of R2/(R1+R2). The pole (or cut-off frequency) should be -1/Req/C, where Req=R1*R2/(R1+R2).
 

    seyyah

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Yes i've mentioned that. Adding 2π and we get Fo i think. Thanks.
 

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