Projects

Voltage monitor for car’s battery and its charging system

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Project Owner : Bhaskar Jyoti Mali
Created Date : Mon, 12/03/2012 - 13:54
Project Description :

this project is simply about making a precise digital voltmeter that plugs in to the car’s cigarette lighter receptacle and displays the instantaneous voltage across the battery terminals. When the engine is turned off, the voltage measured by this device is the actual output voltage from the battery. However, if the engine is on or the car is running, it actually measures the charging voltage across the battery that is coming from the car’s charging system (alternator + rectifier).

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