Hi Rakesh, 

Diodes have a wide range of uses due to their characteristics. following are a couple of applications of diodes:

1. Used as a rectifier

2.used in clamping circuits for DC resortation

3.used in clipping circuit for wave shaping

4.used in voltage multipliers 

5.used as switch in digital logic circuits in computer

6.laser diodes used in optical communication 

7.light emitting diode(LED) are used in digital displays

8.used in voltage regulators

Hope this Information has been useful. 

All the best

Hello Rakesh,

This is a platform for career related queries, we would be glad to help you out in such queries.

Anyways the relevant informations for your query are :

• It is the process of rectifier as one of the part of DC Power Supplies.
• Detector Circuits.
• In bracing systems utilized as DC Restorers
• In cut-out circuits utilized for waveform era.
• Switches in advanced rationale circuits.