A magnetic amplifier with a low-output impedance is shown in Figure P5.16 in cascade with a low-pass

Question:

A magnetic amplifier with a low-output impedance is shown in Figure P5.16 in cascade with a low-pass filter and a preamplifier. The amplifier has a high-input impedance and a gain of 1 and is used for adding the signals as shown. Select a value for the capacitance C so that the transfer function V0(s)/Vin(s) has a damping ratio of 1/ˆš2. The time constant of the magnetic amplifier is equal to 1 second, and the gain is K = 10. Calculate the settling time (with a 2% criterion) of the resulting system.
Figure P5.16
Feedback amplifier.