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Block Diagram of Power Supply Failure Alarm

Power Supply Failure Alarm Circuit

Most of the power supply failure alarm requires a separate power source for themself. It employs an electrolytic capacitor to store sufficient charge to give charge to the alarm circuit which sounds an alarm for a given period of time when the main supply fails.

Wheatstone Bridge

Wheatstone Bridge Circuit

A Wheatstone Bridge is an electronic circuit used for measuring resistance particularly in exactness application. This bridge is used in various application such as electronics, material science and physics.