what is diode?

-


 

What is diode?

 

HELLO FRIENDS.

 

DIODE

It is a semiconductor device with two terminals, typically allowing the flow of current in one direction only.

That’s why It is also called unidirectional component.

It has two terminals named ANODE & CATHODE.

AS SHOWN IN FIG THE SILVER BAND ON A SIDE INDICATES CATHODE.



& THE SYMBOL IS ALSO SHOWN IN THIS IMAGE.

 

A diode works only in forward biased.

When we connect a diode in the circuit in correct position as shown in fig below, the diode will allows current to flow.



& a diode oppose the current when connected in reverse biased as shown in fig.



APPLICATION

AC to DC rectifier.

 


EX:- battery chargers, etc.

 

Reverse protection as shown below

 


To oppose the current flowing back to charger.

 

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