Hi guys! I'm portuguese and I have an Electricity exam tomorrow. So this is really urgent. There are 2 kinds of exercises I don't know how to do. The tests usually have similar exercises to these ones:
1) Operational Amplifiers
Consider the circuit represented in this picture:
. The voltage vi(t)=1sin(wt) V and the operational amplifier saturates in (+-)12V. Calculate and plot the signal of the voltage vo(t).
2) Diodes
Consider this circuit:
. Plot the signal vo(t) (show your calculations [all of them]).
See details in the attached picture. Use KVL.
To be more precise, the complete formula for the peak reverse voltage:
Vg = i1 *R1 + Ud + i2*R2
but
R1=1k
R2=1k
i1= i2= 0
Vg= Ud