Consider the circuit obtained from that of by replacing RL with a capacitor C. (a) Assuming the diodes are operated in the small-signal mode, show that the diode bridge acts as a single...

Consider the circuit obtained from that of by replacing RL with a capacitor C. (a) Assuming the diodes are operated in the small-signal mode, show that the diode bridge acts as a single current-controlled resistance r 5 2VTyIS. (b) Draw the small-signal equivalent circuit, derive its transfer function H(j ), and show that its 23 dB frequency is 0 5 ISy(2VTC). (c) Specify C so that 0 5 1 Mrad/s at IS 5 0.1 mA. (d) If vi 5 (10 mV) cos 106 t, fi nd vo (magnitude and phase) for IS 5 1 mA and IS 5 10 A.