What is corner frequency of low pass filter?

5.3.1 Low-Pass Filter The point at which frequencies stop getting passed and start getting attenuated is known as the corner frequency. The corner frequency is the point where the output voltage is 70.7% of the input voltage ie. (0.707 × VIN ). This point is sometimes called the ‘cutoff frequency’ or the ‘-3dB’ point.

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How do you calculate corner frequency?

This “Cut-off”, “Corner” or “Breakpoint” frequency is defined as being the frequency point where the capacitive reactance and resistance are equal , R = Xc = 4k7Ω. When this occurs the output signal is attenuated to 70.7% of the input signal value or -3dB (20 log (Vout/Vin)) of the input.

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