An accurate circuit idea for pre-paid electricity for portable devices

Authors:
K. K. Abdul Salam;J. Sathyan;S. James;S. Sreejith;M. P. Suhair
Affiliations:
Communication Engineering College of Engineering Munnar;ECE, College of Engineering Munnar;ECE, College of Engineering Munnar;ECE, College of Engineering Munnar;ECE, College of Engineering Munnar
Venue:
Proceedings of the International Conference & Workshop on Emerging Trends in Technology
Year:
2011

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Abstract

In this paper, we describe a circuit idea and implementation algorithm of a device useful to common people during travelling. This device provides the power to user by inserting a one rupee coin. It consists of a coin detector, microcontroller and out driver relay. When a coin is inserted, power can be drawn from the plug point for a predefined duration. This devise is useful for charging all portable electronic devices and e-vehicles.