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What is Diode?
in Electronics by engr III (10.4k points) | 14 views

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Diode is the simplest and most  fundamental nonlinear circuit element. Just like a resistor, the diode has two terminals; but unlike the resistor , which has a linear (straight-line) relationship between the current flowing through it and the voltage appearing across it, the diode has a nonlinear i-v characteristic.

A diode may be defined as a near-unidirectional conductor whose state of conductivity is determined by the polarity of its terminal voltage. It is made from a small piece of semiconductor material, usually silicon, in which half is doped as a p region and half is doped as an n region with a pn junction and depletion region in between. The p region is called the anode and is connected to a conductive terminal. The n region is called the cathode and is connected to a second conductive terminal.

by engr III (10.4k points)

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