In the circuit shown in Figure 3 used for full-wave rectification, which of the diodes is connected incorrectly? O a. D4 O b. D₁ O C. D₂ O d. D3 D4 D₁ D3 D₂ Figure 3. Rectification Circuit

3. An SCR differs from the Shockley diode because a. it has a gate terminal b. it is not a thyristor c. it does not have four layers d. it cannot be turned on and off 4. A Shockley diode turns on when the anode to cathode voltage a. exceeds 0.7 V b. exceeds the gate voltage c. exceeds the forward-breakover voltage d. exceeds the forward-blocking voltage 5. Once it is conduction, a Shockley diode can be turned off by a. reducing the current below a certain value b. disconnecting the anode voltage c. a and b d. none of these

Q2: Draw the output waveform for the three shown circuits. 1- +10 V 1Ok V. 0- 5 V 5 V -10V Diodes are IN914. 2- Assume Vm=20V, show the Vdc on the graph D 3- Assume VM3D18V and V-5V. 34

R₁ 54 R₂ D₁ ▷ Figure 1: Precision Rectifier 1. Characterize the relationship of input vs. output for the circuit in Figure 1. That is, find an expression for e. You can use the constant voltage drop model for the diodes. VI