LAB MANUALS

Aim: To plot the characteristics of a diode in forward and reverse biased conditions. Requirement:
Power Supply (0-32V), Digital Multimeter, Diode IN4007, Resister 1K,Ammeter (0-100mA) Activity-1: Diode Forward Characteristics

Circuit Diagram:

Procedure:
1. Connect the circuit as shown in the Fig.1.
2. Vary the input voltage Vs in small steps from 0 to 10V.
3. Note down the readings V_d and I_d.
4. Note down the cut-in voltage at which the diode starts conducting.
5. Plot the graph (V_d ∼ I_d)
 

Observation:

Activity 2: Diode Reverse Characteristics Procedure:1. Interchange the polarity of the dc supply by connecting -ve polarity to p-side and +ve polarity to n-side of the pn-junction diode.
2. Increase the input voltage Vs stepwise in reverse bias.
3. Note down the readings V_d and I_d.
4. Note down the break down voltage at which the diode starts conducting5. Plot the graph (V_d ∼ I_d)
Observation: