Question

4.82 A rectifier" circuit is made by connecting two square-law devices in parallel, as shown in Fig. P4.82. One device has parameters A)-0.5 mA/V2 and VTR ov, the other A2 1.0 mA/V2 and VTR 0V. A sym metric input consisting of a :5-V square wave is applied to the rectifier, and a resistor RL 1 kS2 is connected as the load. (a) Plot the output voltage versus time. (b) Show that device asymmetry causes the output volt- age to have a net dc average, even though one square-law device conducts for positive vIN and the other for negative vIN. Estimate the value of this dc average. (c) Discuss the behavior of the circuit if a capacitor CL 100 μF s connected in parallel with the load resistor. A2-1 mA/v2 5 V square VTR2 0 V IN wave Fig. P4.82

Answer 1

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