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Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits3 Marks
Question
Draw the circuit diagram of a full wave rectifier using two p-n junction
diodes. Explain its working and show input and output voltage variations.
✓

Answer

For +ve half cycle of AC input, terminal A or transformer T will be as low voltage relative centre tap terminal C & B at high voltage. So, D1 will be reverse biased & D2 will be forward biased. Diode D2 conducts to give an output across RL through M. For –ve half cycle of input AC, A will be at high voltage & B will be at low voltage to make D1 forward and D2 reverse biased. D1 conducts to give an output across RL with same polarity.

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