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Physical electronics devices and ics miscellaneous

Physical Electronics Devices and ICs

Direction: In the voltage regulator circuit shown below. The zener diode current is to be limited to the range 5 ≤ i Z ≤ 100 mA.

  1. The power rating required for the load resistance—
    1. 576 mW
    2. 360 µW
    3. 480 mW
    4. 75 µW
Correct Option: A

Power rating,
Pz (max) = IL (max) × Vz
= 120 × 10– 3 × 4.8 = 576 mW



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