A diode rectifier circuit has an AC input voltage of 230 Vrms and a load resistance of 1 kΩ. If the diode is ideal and the circuit is a half-wave rectifier, what is the Peak Inverse Voltage (PIV) across the diode?

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  1. 230 V
  2. 460 V
  3. 325 V
  4. 650 V

Answer (Detailed Solution Below)

Option 3 : 325 V
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Detailed Solution

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Peak inverse voltage (PIV)

The maximum value of the reverse voltage that a PN junction or diode can withstand without damaging itself is known as its Peak Inverse Voltage.

Values of PIV for different configurations of the rectifier

Rectifier

PIV

Half-wave rectifier

Vm

Centre tap full wave rectifier

2Vm

Full-wave bridge rectifier

Vm

3-phase half-wave rectifier

√3Vmp 

3-phase full-wave rectifier

√3Vml

 

Calculation

Given, Vrms = 230V

The PIV across the diode is given by:

\(V_{PIV}=\sqrt{2}\times V_{rms}\)

\(V_{PIV}=\sqrt{2}\times 230\)

VPIV = 325 V

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