This cover sheet must be used as the cover sheet for the completed assignment else zero marks will be awarded. Work to 3 decimal places. Show all working.
Q1 Using Nodal Analysis or by inspection analyse the circuit in figure 1:
(a) Find VI, V2, V3 and V4
(b) Find the current flowing in the 10 Ohm resistor.
(c) If the power rating of RB is 20W can the circuit be left safely? (ignore other resistor power ratings)
These are the values of RA, RB and Vs RA = 20 Ohms, RB = 2 Ohms, Vs = 28 Volts RA
Q2 Analyse the ideal op-amp circuit show in figure 2. using nodal analysis
(a) Find Vo
(b) Find I, the magnitude of the current at the Op-Amp output terminal
(c) What is the maximum positive voltage Vy can be before the amplifier saturates?
These are the values of Vx, Vy and Rf
