The rectifier circuit shown above has input sine wave has 120V-rms value. Assume
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Question
The rectifier circuit shown above has input sine wave has 120V-rms value. Assume the diode to be ideal. Select a suitable value for R so that the peak diode current does not exceed 50mA. What is the greatest reverse voltage that will appear across the diode?
The rectifier circuit shown above has input sine wave has 120V-rms value. Assume the diode to be ideal. Select a suitable value for R so that the peak diode current does not exceed 50mA. What is the greatest reverse voltage that will appear across the diode?Explanation / Answer
I peak = V peak /R
R = V peak / I peak
peak means maximum value
given I peak = 50mA
voltage value is rms
V peak = V rms *2
=120*2
=169.7 v
R = 169.7 /50m
= 3394
b)
greatest reverse voltage = voltage across diode during reverse bias
=V peak
=169.7V
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