i m sangeetha
currently i m doing project on rail crack detector.
in this we r using ir transmitter & receiver to sense and one dc motor ,relay setup to stop the train.
I NEED
1) in real time how for does the ir sense , their full infomation
2)how it controls the train ....etc

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LASER TORCH BASED VOICE TRANSMITTER AND RECEIVER
Using this circuit you can communicate with your neighbors wirelessly. Instead of RF signals, light from a laser torch is used as the carrier in the circuit. The laser torch can transmit light up to a distance of about 500 meters. The phototransistor of the receiver must be accurately oriented towards the laser beam from the torch. If there is any obstruction in the path of the laser beam, no sound will be heard from the receiver. The transmitter circuit (Fig. 1) comprises c ....etc

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hiiiiiiiiii
myself Amit studying in ISBT final yr Electronics & Communication
I decided to do a project on Laser torch based voice transmitter and receiver
bt the problem is i m not getting the laser in market wht type of laser is it & there is anyithing i can do in place of laser
can u give a little discription abt laser ....etc

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Iam searching for the full report on the topic LASER TORCH BASED VOICE TRANSMITTER AND RECEIVER. I need more information about this topic including figures. ....etc

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AIM:
• To Design a circuit of an electronic infrared communication system to transmit and receive audio (voice/music) signals.
• Develop new ideas to implement this circuit purposely.
• To study the circuitry and different types of components used.
COMPONENTS USED:
IC1…………………………………………………………..UM66
IC2…………………………………………………………..741(2)
IC3……………………………………………………………LM 386
T ....etc

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Sir i want a ppt of long range fm transmitter...if u can do it ..it would be so nice of you
Sir a ppt on long range fm transmitter..thank you ....etc

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IR-BASED VOICE TRANSMITTER AND RECEIVER


INTRODUCTION:

IR-BASED VOICE TRANSMITTER AND RECEIVER, the aim of the project is to communicate wirelessly. In this project we are using various transistors, LED, op-amp etc. and we made a detailed study on this so as to effectively use them in our project.

1.1 OBJECTIVE OF THE PROJECT: -
The aim of the project is to communicate between any 2 distant places wirelessly which are at a distance of 5meters apart. The distance can be improve ....etc

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I am doing a project in which i have to count the no.of. vehicles passing a signal in a particular lane. Which type of sensors can be used to count the vehicles...? If ir sensors can be used,is it possible to design ir transmitters and receivers in the range of 40 to 50 meters or more....? or Are they readily available in the market...? ....etc

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I want ppt for long range eye gaze tracking system for large screen.kindly send me .
....etc

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ABSTRACT

The DS - CDMA is expected to be the major medium access technology in the future mobile systems owing to its potential capacity enhancement and the robustness against noise. The CDMA is uniquely featured by its spectrum spreading randomization process employing a pseudo-noise (PN) sequence, thus is often called the spread spectrum multiple access (SSMA). As different CDMA users take different PN sequences, each CDMA receiver can discriminate
and detect its own signal, by regarding the signals transmitted by other u ....etc

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