PIN Diode Working and Practical Applications

The basic construction of PIN diode involves a heavily doped p and n region. An intrinsic region between p and n region separates them.

Basic Working

During forward biasing a PIN diode behaves like a current controlled variable resistance. In reverse biasing condition, it works like a constant capacitance.

Let’s understand the working of PIN diode in detail:

Practical applications

  1. Used in attenuators
  2. Used in photodetectors
  3. Used as a microwave switch

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