WIRE-LESS SPEAKERS TECHNOLOGY THROUGH MINI TRANSMITER

WIRELESS SPEAKERS FORM AMPLIFIERS AND MANY AUDIO ETC......

FROM AN AMPLIFIER AN TRANSMITTER WILL BE MODULATED AND SEND INTO SPACE WITH AN TRANSMITTER AND THESE SIGNALS WILL BE MODULATED INTO SPECIFIC FREQUENCY.AND RECEIVED BY SPEAKERS WHICH WERE WIRE-LESS AND DE-MODULATED AND CONVERT INTO SOUND WAVES..............

BY
   HARSHA
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dev harsha contact 7993987593 said…

nice

7 November 2013 at 05:30

Automatic Railway Gate Controller with Circuit Diagram

The main aim of this project is to operate and control the unmanned railway gate in the proper manner in order to avoid the accidents in the unmanned railway crossing. In a country like ours where there are many unmanned railway crossings, accidents are increasing day by day. These train accidents are due to the absence of human power in the railway. In order to overcome the accidents due to the above problem we have planned to design the project. Automatic Railway Gate Control System with High Speed Alerting System is an innovative circuit which automatically controls the operation of railway gates detecting the arrival and departure of trains at the gate. It has detectors at the far away distance on the railway track which allows us to know the arrival and departure of the train. These detectors are given to microcontroller which activates the motors which open/close the railway gate correspondingly. Another feature of this circuit is that it has an intellige...

LED DIMMER WITH CIRCUIT DIAGRAM

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Motion Detector Circuit

Introduction to Motion Detector: The motion detector is not only used as intruder alarm but also used in many applications like home automation system , energy efficiency system, etc. The motion detector will detect the motion of the people or objects and give the appropriate output according to the circuit. In general, motion detector uses different types of sensors like Passive infrared sensor (which will detect the motion of the person using the person body heat), microwave sensor (Microwave sensor will detect the motion of person by measuring the change in frequency from the produced beam), ultrasonic sensor (It produces acoustic signals which will detect the motion of a person) etc. There are some motion detectors which will use different technology and include number of sensors (PIR, microwave sensor, ultrasonic sensor, etc.) to reduce the false triggering and increase the accuracy in motion detection. Here is the simple and reliable circuit which uses IR...

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