Tunnel Diode

The tunnel diode has a region in its voltage current characteristic where the current decreases with increased forward voltage, known as its negative resistance region. This characteristic makes the tunnel diode useful in oscillators and as a microwave amplifier.

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Tunnel Diode Oscillator

The negative resistance region of the tunnel diode makes oscillator action possible. The unijunction transistor has a similar oscillator application.

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Electronics concepts

Diode varieties

Oscillators
 
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