Repeat Problem 9.53 for the following specifications:
Vz = 12 V rz = 11.5 ? Prated = 400 mW
At the knee of the curve:
Izk = 0.25 mA rzk = 700 ?
Problem 9.53
The Zener diode in the simple voltage regulator shown in Figure P9.53 is a 1N5231B. The source voltage is obtained from a DC power supply. It has DC and ripple components: vS = VS + vr where:
VS = 20 V |vr| = 250 mV
R = 220 ? |io|avg = 65 mA |vo|avg = 5.1 V
Vz = 5.1 V rz = 17 ? Prated = 0.5W
|iz| min = 10 mA
Determine the maximum rated current the diode can handle without exceeding its power limitation.
Analysis:
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