Question
Download Solution PDFA half-wave rectifier is designed using a diode and a resistor. The diode will burn out if it remains ON for more than 10 μs. What is the minimum input frequency required for safe operation?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
A half-wave rectifier conducts only during the positive half-cycle of the input AC signal. The diode must not remain ON for more than a specified time to prevent burnout.
Given Constraint:
The diode must not remain ON for more than 10 μs during each cycle.
Key Formula:
The conduction time of the diode in a half-wave rectifier is half the time period of the input signal:
where
Calculation:
Given the diode's maximum safe conduction time:
Substituting
Conclusion:
The minimum input frequency required to ensure the diode does not exceed its safe conduction time is 50 kHz.
Final Answer: 4) 50 kHz
Last updated on Jun 16, 2025
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