A center-tapped full-wave rectifier has a transformer secondary voltage of 200 VRMS per half winding. Which of the following minimum diode Peak Inverse Voltage (PIV) ratings should be selected for reliable operation?
600 V
In a centre-tapped full-wave rectifier, the non-conducting diode must withstand the full secondary voltage across both halves, so \(\text{PIV} = 2V_m\), where \(V_m\) is the peak voltage of each half winding.
Peak voltage per half winding: \(V_m = \sqrt{2} \times V_{rms} = 1.414 \times 200 \approx 282.8\ \text{V}\).
\(\text{PIV} = 2 \times 282.8 \approx 565.7\ \text{V}\).
The diode rating must be at least 565.7 V; 200 V and 400 V are below this, and 550 V is also too low. The nearest safe standard rating is 600 V.
Hence, the answer is 600 V.
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Important Questions from Diodes and Its Applications
Which of the following statements is FALSE about LED lamps?
A Zener diode is used in _______ for voltage regulation.
Which of the following diodes can be used as Voltage Regulator if used in reverse bias?
What is it called when a diode exceeds the reverse voltage and then it fails and passes more current in the reverse direction?
Determine the resonant frequency of an IMPATT diode having the following specifications:
Carrier drift velocity: 2 × 107 cm/s
Drift-region length: 5 μm
Maximum operating voltage: 100 V
Maximum operating current: 250 mA
Efficiency: 20%
Breakdown voltage: 90 V
