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Showing posts with the label Semiconductor device

Dark current in photodiode.

Dark current is a kind of leakage current of a photodiode in the reverse direction when it is exposed to light.

Transistor action.

Answer:- Transistor action is the term applied to the process of explaining the passage of electric current through a transistor.

Triode.

Answer:- In order to improve the performance of a diode, another electrode in the form of a wire gauze cylinder was introduced in between the filament and the plate.This vacuum tube consisting of three elements namely plate, filament and grid is called a triode.

Half wave rectifier.

Answer:- A diode which translates only one half of the a.c input signal into output current is said to be acting as a half wave rectifier.

Full wave rectifier.

Answer:- A rectifier  is said to be a full wave rectifier if it sends current, through the load, in one direction during both the halves of input  a.c cycles.