Question

Graph at least two periods of the output Vout when Vin is the periodic signal 2sen (2πt).
Consider Ri = Rf = 1kΩ, RC = 1 and D1 and D2 as rectifier diodes.

Rf Ri o Vout Vin o +15V +15V opamp D2 DI opamp U2 U1 -15V -15V

Answer 1

RE R: Vin +15V A PI 15V, Vinasin(2nt). RiR=Ik, Rc- 271 pmparator yeles dSine wave FOY Ve At hist we assume as a V Ve VOv 2 output df Campavator is -15V. V.>V. Now D is OFF D is ON Vout Voi we have inver ting amplifer Nou R£. Vin Ri where Vo VO-Vin differen thator crcuit is Stage op-amp Vout -RC dVo dt where = RC. d (Vin) =1. d (2sin2nt RC YP 2. CoS2Trt 2T Vouk ydes 4TT CoS2TTt For ve _

Cycdes dsine wave FOT Ve AH irst we assume as compaiotor . V= -Ve output d camparator is +isv. V>V Nous D is OFF have negalive feed back. so . V^hual short Cancept is Noww a we Valid i-e V = V - V.-oV- V. fedback dear have Ve In the 2d staqe op-amp we V.OV Now Polential dferen bebween both the V= V =OV No urent flows, ends &teminals is zero. Vour RXOA = OV 4T 4TT -4