- 1 (76.07 KiB) Viewed 18 times
- 2 (111.58 KiB) Viewed 18 times
(1) Connect the circuit according to the circuit diagram and connect Ui to the circuit. Ui is the 10Hz, 1V peak-to-peak sine signal output by the signal generator. (2) Measure the effective value of Uo with an oscilloscope, and fill this value into the following table. This voltage is the effective value Ubw of the output voltage in the passband. (3) Calculate the Ubw value of 0.707 times and fill in the form. When the input signal is close to the cutoff frequency, the output voltage will continue to drop until the effective value is equal to 0.707 times Ubw, and record the cutoff frequency fp. (4) After finding the cut-off frequency, measure the value of Uo, called Ueb at 10 times fp frequency, and fill in the form f (Hz) 10 Fp 10 * fp U. (V) Ubpass Ubstop 0.707 * Ubw