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INTRODUCTION 1.1 Introduction A wireless signal jammer is a device which blocks transmission by creating interference. This wireless signal jammer can be categorized into the Radio Frequency (RF) jammer and GSM jammer. A Radio Frequency jammer is a device used to disrupt or prevent communication via a broadcasted RF signal. It is an RF and GSM frequency disrupter commonly known as wideband radio frequency (RF) and GSM cell phone jammer […]
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6,787 Words
INTRODUCTION 1.1 Background of study Has technology transformed humankind into omniscient being? Years back, communication was done through difficult means like travelling to the destination of the second party, posting letters est. Today people can communicate easily through various means like e-mailing, face booking, GSM etc. The new age of technology has redefined communication, most people nowadays have access to mobile phones and […]
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6,543 Words
With advancement of technology things are becoming simpler and easier for us. Automatic systems are being preferred over manual system. The purpose of this project is to design and construct A GSM based home automation using AVR. Using GSM networks, in this project a home power control system has been proposed that will act as an embedded system which can monitor and control appliances and other devices locally using built-in input and […]
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Car battery level monitor indicates the status of the battery just by glowing LED’s. This work explains you how to design battery level indicator. You can use this circuit to check car battery or inverter. So by using this circuit, we can increase the lifetime of battery. The heart of this battery level indicator circuit is LM3914 IC. This IC takes input analog voltage and drives 10 LED’s linearly according to the input analog voltage. […]
49 Pages
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7,367 Words
In developing countries, electricity distribution to final consumers stands chances of failure due to epileptic power supply. Most times, failure can come from the electric power provider or problems with poor electrification of a building. Power supply and failure is a frequent experience that occurs in our mains. Power restoration is a period of time when the electricity supply to a particular building or area is restored. In times o […]
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The guard is also susceptible to sleep at times. It was then that home security system based upon electronic circuits were developed which proved to be highly reliable and were appreciated by the people as they were relieved from constant monitoring of their homes. An intelligent Home security system is a monitoring device that monitors and alerts the user via SMS in case of a burglary attempt or fire accident at that place – house or […]
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The main objective of this project was to ensure a proper security to building against theft or intruder. An intrusion detection systems are an integral part of most physical security systems. This device is widely used to isolate and protect public and private places such as airports, military bases, power stations and security related applications. Fence structures merely prevent a percentage of intrusions or postpone them. A higher […]