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Question
Draw the circuit arrangement for studying V-I characteristics of a p-n junction diode in (i) forward biasing and (ii) reverse biasing. Draw the typical V-I characteristics of a silicon diode.
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Solution
Forward biasing:
Fig. (a)
Reverse biasing:
Fig. (b)
Fig. (c)
Figures (a) and (b) depict the circuit for examining a diode's V-I properties. The value of current is noted for various voltage values. The result is a graph between C and I, as shown in Fig. (c).
It is evident from a junction diode's V-I characteristics that current can only flow through it when it is forward biassed. As a result, when alternating voltage is placed across a forward biassed diode, current only flows during a portion of the cycle. Alternating voltages are rectified using this characteristic.
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