## Question

###### How to measure frequency, lower cutoff and upper cutoff on this circuit? 0R 8 ot

How to measure frequency, lower cutoff and upper cutoff on this circuit?

0R 8 ot

## Answers

Apply ac voltage with variable frequency and constant amplitude. apply output voltage (resistor voltage) to one channel and input voltage to another channel. Vary the frequency of ac supply and at each frequency measure and tabulate input voltage and output voltage and calculate gain=output voltage/input voltage. Plot gain versus frequency. From the plot find frequency at which gain is maximum which is center frequency. Find frequencies at which gain is (1/sqrt(2)=0.707 times maximum gain, the lower one is lower cut off frequency and upper one is upper cut off frequency

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