Question

Draw circuit arrangement for studying V-I characteristics of a p-n junction diode.

Hint:

A simple circuit with a variable DC power supply, a series resistor, and a diode is used to plot the V-I characteristics.

Answer 1

The circuit required to examine the V-I characteristics of a p-n junction diode comprises:
- A variable DC power source for adjusting voltage \( V \),
- A p-n junction diode,
- A resistor in series to control the current flowing through the diode, and
- A voltmeter and an ammeter for measuring the voltage across the diode and the current through it, respectively.
A basic schematic is as follows: \[ \begin{array}{c} \text{DC Power Supply} \quad \longrightarrow \quad \text{Series Resistor} \quad \longrightarrow \quad \text{P-N Junction Diode} \quad \longrightarrow \quad \text{Ammeter} \quad \longrightarrow \quad \text{Voltmeter} \end{array} \] Voltage and current are systematically altered, and the resultant V-I characteristics are plotted.