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Circuit Design of Pulse Amplitude Modulation

December 27, 2017 by Tarun Agarwal Leave a Comment

Pulse Amplitude Modulation

Pulse Amplitude Modulation

Today communication is the heart of the technology. Communication is achieved over a transmitter and a receiver through signals. These signals carry the information through modulation. Pulse Amplitude Modulation is one of the kinds of modulation techniques used in signal transmission. Pulse amplitude modulation is the simplest form of modulation. It is Analog to digital conversion method where the message information is encoded in the amplitude of the series of signal pulses.

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Home and Industrial Safety Using Fire and Gas Detection System Using GSM

March 31, 2017 by Tarun Agarwal 2 Comments

Home and Industrial Safety Using Fire and Gas sensor System Using GSM

Home and Industrial Safety Using Fire and Gas sensor System Using GSM

In this article, we are going to give a brief explanation on how to implement “Home and Industry Safety using Fire and Gas Detection System using GSM”. The main aim of this project is to monitor for liquid petroleum gas (LPG) leakage to avoid fire accidents, providing house/industry safety feature where the security has been an important issue. The system detects the LPG leakage using a gas sensor and flames by a flame sensor that alerts the consumer about the gas leakage by sending SMS with the help of GSM module which is connected preprogrammed microcontroller.

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Fundamentals of RS232 Tutorial and Interface

April 16, 2015 by Tarun Agarwal 2 Comments

Fundamentals of RS232

Fundamentals of RS232

In RS 232, the term RS stands for recommended slandered and the number 232 specifies the latest version.There are various types of serial communication systems were designed to transfer the information over large distances through some variety of information cable. The term serial most frequently denoted to the RS232 port which is called as the serial port, and therefore the several devices designed to be compatible with it using serial cable which is plugged into it. Basically, all long distance communication transfers the information one bit at a time, instead of in parallel, as a result of it reduces the price of the cable. [Read more…]

Know the Procedure of GSM Modem Interfacing with 8051

January 29, 2015 by Tarun Agarwal 11 Comments

GSM Modem

GSM Modem

The acronym of the GSM modem is Global System for Mobile Communications, it is a wireless communication module, used to  make a computer or any processor to communicate over a network. This modem uses a variation of TDMA(Time Division Multiple Access) and is the most commonly used of the digital wireless telephony technologies like TDMA, GSM and CDMA.A GSM modem needs a SIM card to operate through a n/w range subscribed by the network operator. This modem can be connected to a computer via a serial, Bluetooth or USB connection. A GSM modem is also a standard GSM mobile phone with a suitable cable and software driver to connect to a USB port on your PC. Generally, this modem is preferred instead of a GSM mobile phone. This article describes how GSM modem interfacing with 8051 microcontroller. [Read more…]

Phase Locked Loop System Working and Applications

January 9, 2015 by Tarun Agarwal 4 Comments

PLL IC

PLL IC

In our day-to-day life, we got used with various types of communication systems such as a radio communication system, telecommunication system, wireless communication system, optical communication system and so on to communicate with others. All these communication systems we use in our regular life are controlled using different control systems such as a phase locked loop or PLL, cooperative control, networked control and so on. Here, in this article we discuss about phase locked loop system working and PLL applications. But, primarily we must know what is PLL. [Read more…]

Long-Range Cordless Burglar Alarm Circuit and Its Working

July 30, 2014 by Tarun Agarwal Leave a Comment

Burglar Alarm

Burglar Alarm

In present days, burglar alarm systems have become necessary equipment in many stores as well as in homes.But, selecting a burglar alarm system for your home may often be confusing due to availability of different types. The basic burglar alarm is a magnetic switch sensor that includes a switch which opens and closes when it is near the magnet.

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MIMO – Multiple Input and Multiple Output Wireless Communications

June 18, 2014 by Tarun Agarwal 4 Comments

MIMO Wireless Communications

MIMO Wireless Communications

MIMO or Multiple-Input Multiple-Output can be referred to as the communication channel created with multiple transmitters and receivers of an antenna to improve communication’s performance. Since their initial development in the year 1990, MIMO Wireless Communications have become integral part of the most forthcoming commercial and next generation wireless data communication systems. MIMO is one among the several types of Smart Antenna Technologies. Nowadays MIMO techniques are used in different technologies such as WI-FI and LTE (long term evolution). [Read more…]

What is Smart Card Authentication and its Applications

June 5, 2014 by Tarun Agarwal Leave a Comment

Smart Card Authentication

Smart Card Authentication

Internet and online applications usage have tremendously increased nowadays and become an integral part of our day-to-day lives. For applications like internet banking, confidential information passing and online financial transactions top notch security is the prerequisite. However, in the recent past cyber-attacks have become very common and are posing huge challenges to both the users and service providers alike. The modus operandi of the prevailing cyber stealing racket is hijacking user credentials especially username and password to breach the security of user-based authentication systems. To resolve this problem, smart-access card system is secure and reliable authentication system that secures user credentials and removes the inconveniences like remembering multitude of password and usernames. [Read more…]

Automatic Bus Location Announcement System using Microcontroller and GPS

May 28, 2014 by Tarun Agarwal 12 Comments

Bus Location Announcement System

Bus Location Announcement System

Wireless communication can be defined as transfer of information between two or more points without using wires or cables. There are different wireless technologies such as RFID, IR, GPS, Bluetooth, and WI-FI, etc. In olden days location announcement was done with the help of speakers, but now it is developed by using IVRS in railways stations. Nowadays bus location can be found with the help of Geo Positioning satellites. [Read more…]

Wireless Data Communication Project on Data Encryption and Decryption Using Zigbee

May 12, 2014 by Tarun Agarwal 8 Comments

Wireless Data Communication

Wireless Data Communication

With the advancement of technology day-by-day our lifestyle is becoming simple – for instance, wireless communication by means of which we can send or receive data from very far away distances to our hands with a mobile phone. Wireless data communication is defined as the transfer of data over a distance without using any enhanced electrical conductors or wires. The distance may be short or long depending on the requirements and accessibilities. [Read more…]

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Recent Posts

  • Circuit Design of Pulse Amplitude Modulation
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