Chapter 15
Special Purpose Electronic Devices
Learning Objectives
To get familiarity of structural details and working principles of special devices
- Tunnel Diode
- Photo Diode
- Varactor Diode
- Schottky Barrier Diode
- Light Emitting Diode
- Silicon Control Rectifier
15.1 TUNNEL DIODE
15.1.1 Introduction
Tunnel Diode (Fig. 15.1) is also known as Esaki Diode, named after Leo Esaki for the discovery of ‘electron tunnelling phenomenon’ in Tunnel Diodes.
Fig. 15.1 Tunnel diode
Tunnel Diodes are two terminal devices. Fundamental difference between ordinary P–N Diode and Tunnel Diode is doping of P- and N-type semiconductor materials. In P–N Diode, ...
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