Design Of An Intelligent Switch For Low Voltage Distribution System

Abu Khir, Abu Bakar (2009) Design Of An Intelligent Switch For Low Voltage Distribution System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project is to design an Intelligent Switch for Low Voltage Distribution. This project used the knowledge of electrical and electronics. This project has 2 main parts of circuits, which are step-down AC voltage (240 Volt) to DC voltage (9 Volt). The second part is as emergency supply which alerts for darkness condition and no power supply is needed. For the step-down voltage part, it converts high voltage to low voltage (240 V to 9 V). As been used for this application, I used step-down transformer as main equipment. And for other equipment as bridge rectifier, capacitor, two changeover contacts (relay normally closed). And for the emergency supply part, is to analyze the performance of the system in darkness and no power supply condition. For analyze the performance in darkness condition, it used phototransistor. In this section have a Darlington pairs (2 NPN transistors) and relay. Others objectives is to determine the characteristics of the phototransistor. For the last objectives is to provide education materials for students such as experiments or study case model. During completed this circuit, I have apply many skill from my study.

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