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.
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, $D^1$ will be reverse biased & $D^2$ will be forward biased. Diode $D^2$ 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 $D^1$ forward and $D^2$ reverse biased. $D^1$ conducts to give an output across RL with same polarity.
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