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Simple RC Filter Cutoff


The simple RC filter rolls off the frequency response at 6 dB per octave above the cutoff frequency. The position of the resistor and capacitor are switched to change from low pass to high pass but the same calculation applies to both filters. This calculator assumes a low source impedance, which usually is small enough that it does not change the corner frequency.
Input any two values in the form boxes and hit the Calculate button to find the remaining value.



More Calculators in the Lab Notebook
©2003 Jack Orman
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This page last modified on Friday, 04Dec2009 04:56:20 PST
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