Question

Explain the working of a zener diode as a voltage regulator

Answer 1

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A zener diode is always operated in its reverse biased condition. Avoltage regulator circuit can be designed using a zener diode to maintain a constant DC outputvoltage across the load in spite of variations in the input voltage or changes in the load current.

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Answer 2

$\colorbox{orchid}{ANSWER}$

Explain the working of a zener diode as a voltage regulator?

➡Here,when input DC voltage increased beyond a certain unit limit, the current through the circuit rises sharply, causing a sufficient increase in the voltage drop across the resistor thus, the voltage across the zener diode remains constant and also the output Voltage remains constant at Vz when the input DC voltage decreases, the current through the circuit goes down sharply causing sufficient decrease in the voltage drop across the resistance.

thus, the voltage across the zener diode remains constant and also the output voltage across R1 remains constant at Vz.

Hence, the output voltage remains constant in both conditions.

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