PN Junction Diode Construction and Working | Forward Bias and Reverse Bias | Basics of Electronics
Understanding PN Junction Diode
Introduction to PN Junction Diode
A PN junction diode consists of P type and N type materials.
P type material has "holes" that behave like positive charges; N type has extra electrons, creating a negative charge.
Formation of PN Junction
When P and N types are placed together, they form a junction where electrons fill holes.
This movement creates a depletion region with no free charge carriers, acting as a barrier.
Working of the Diode
Forward biasing occurs when the positive terminal connects to P type and negative to N type, allowing current flow.
If voltage overcomes the depletion barrier, current flows through the diode, making it "on."
Reverse biasing pulls electrons away from the junction, widening the depletion region and blocking current flow.
Applications of PN Junction Diode
Used in rectifiers for converting AC to DC current (rectification).
Video description
In this video, we’re going to learn about construction and working of PN Junction Diode and Its Applications in Real Life.
Timecodes
0:07 - Introduction
0:40 - Construction of PN junction diode
1:58 - Formation of PN junction
2:10 - Depletion Region
3:12 - Working of PN junction diode when we apply an external voltage
3:27 - Forward biasing of PN junction diode
4:14 - Reverse biasing of PN junction diode
4:52 - Real Life Applications of PN Junction Diode
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Your Queries :-
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Faculty - Shubham Kola
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