Consider the circuit obtained from that of by swapping R2 with the sub-network made up of D1, D2 and R1, so that now R2 is between vI and vO, and the sub-network is between vO and ground. Let R1 5 30...

Consider the circuit obtained from that of by swapping R2 with the sub-network made up of D1, D2 and R1, so that now R2 is between vI and vO, and the sub-network is between vO and ground. Let R1 5 30 kV and R2 5 10 kV, and let both diodes have VZ 5 6.8 V and VD(on) 5 0.7 V. (a) Draw the modifi ed circuit and then sketch and label its VTC. (b) Repeat part (a) if the direction of D1 is reversed. (c) Repeat (a) if the directions of both diodes are reversed. (d) Repeat (a) if both diodes are placed in parallel with R1, but with opposing directions (anode of D1 and cathode of D2 to the output node, cathode of D1 and anode of D2 to ground).