DTMF Based Interfacing and Control of Induction Motor using TRIAC



The AC induction motor is the most commonly used AC motor in industrial application because of its simplicity, rugged construction, and relatively low manufacturing costs. The reason that the AC induction motor has these characteristics is because the rotor is a self-contained unit, with no external connections. This types of motor devices its name from the fact that AC currents are induced into the rotor by a rotating magnetic field.
Our project d ....etc

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DTMF BASED DEVICE CONTROLLING SYSTEM
ABSTRACT
In this competitive world human cannot spare his time to perform his daily activities manually without any fail. The most important thing he forgets to switch off the room lights wherever not required. With this, even the power will be wasted up to some extent. This project gives the best solution for electrical power wastage. Also the manual operation is completely eliminated. The industrial appliances can be switched on/off using DTMF TECHNOLOGY.
The main function of ....etc

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EMBEDDED SYSTEMS
1.1 Introduction:
An embedded system is a system which is going to do a predefined specified task is the embedded system and is even defined as combination of both software and hardware. A general-purpose definition of embedded systems is that they are devices used to control, monitor or assist the operation of equipment, machinery or plant. Embedded reflects the fact that they are an integral part of the system. At the other extreme a general-purpose computer may be used to control the operation ....etc

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this is bhupinder.
i m the student of btech 3rd year i want the full description about dtmf using 8051 microcontroller with dtmf decoder. ....etc

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INTRODUCTION


In the present world of wireless technology every thing is going to be digital and wireless, and the cell phone is the key player in wireless technology today.
And today technology made the possessing of a mobile, considered as a basic commodity.
And the trends in wireless technology changing day-by-day and today the working is going on how to develop remote devices with out the presence of man and to reduce to the time factor and labor, and our project be ....etc

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what are the advancements/future scope we can look forward in the project DTMF based device control system??? ....etc

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PRESENTED BY:
N. RAMAKRISHNA REDDY
DINESH REDDY
G. SPURTHI REDDY
MANASA


MICROCONTROLLER BASED MULTIPLE DEVICE CONTROL BASED ON INPUT FREQUENCY.
DESCRIPTION:
The 230v ac supply is down converted into 12v by ac transformer. The transformer output is rectified by bridge rectifier and converts into pulsating dc. This voltage is given to the filter. The filter removes the unwanted ripple components and outp ....etc

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A Linux Device Driver for USB to USB Direct Link Device

The first version of the Universal Serial Bus (USB) specification was released in January 1996. In April 2000, version 2.0 of the USB specification, which supports transfer rates up to 480 Mbps, was released. Because of its low cost, high data-transfer rate, ease of use, and flexibility, USB has gained wide acceptance in the computer industry. Today, many peripherals and devices connect to computers through USB interfaces. Currently, most general-purpose operating systems pro ....etc

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hi.
i need a report and ppt as early as possible ....etc

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please give me a project report on dtmf controlled electrical device switching using 8051 micro controller (89c52), ....etc

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