The 1N963 Zener diode in the simple voltage
regulator circuit shown in Figure P8.40 has the specifications:
Vz = 12 V rz = 11.5 Ω PRated =
400 mW
At knee of curve:
izk = 0.25 mA rzk
= 700 Ω
Determine the maximum rated current the diode
can handle without exceeding its power limitation.
