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V-I Characteristics of P-N Junction Diode

The document describes studying the voltage-current (V-I) characteristics of a P-N junction diode. The apparatus includes a power supply, voltmeter, ammeter and resistors. When forward biased, current flows through the diode, while in reverse bias current is blocked. The procedure records voltage and current values at varying input voltages to plot the diode's I-V graph showing its rectifying behavior.

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Kushal Bhatt
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2K views2 pages

V-I Characteristics of P-N Junction Diode

The document describes studying the voltage-current (V-I) characteristics of a P-N junction diode. The apparatus includes a power supply, voltmeter, ammeter and resistors. When forward biased, current flows through the diode, while in reverse bias current is blocked. The procedure records voltage and current values at varying input voltages to plot the diode's I-V graph showing its rectifying behavior.

Uploaded by

Kushal Bhatt
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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V-I characteristics of P-N junction diode

Aim: To study the V-I characteristics of a P-N junction diode.


Apparatus: Power Supply (0-30V), Voltmeter (0-30V), Ammeter (mA range),
Resistors, P-N junction diode

Theory: The diode is a device formed from a junction of P-type and N-type
semiconductor materials. The lead connected to the P-type material is called
the anode and the lead connected to the N-type material is the cathode. In
general, the cathode of a diode is marked by a solid line on the diode. The
primary function of the diode is rectification. When it is forward biased (the
higher potential is connected to the anode lead), it will pass current. When it
is reversed biased (the higher potential is connected to the cathode lead),
current flow is blocked.

Fig: 1. P-N Junction Diode

Circuit diagrams:

Fig: 2. Forward Biased diode

Procedure:
1. Connect the circuit as shown in figure-2.
2. Record the voltage across the diode (V) and current (I) through it as a function
of input voltage.
3. Plot the graphs of I → V as shown in figure-3.
Observation Table:

Forward Biased
S. No.
Voltage (volt) Current (mA)

Fig:3. Graph of I-V characteristics

Conclusion:

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