clap switch project

Essay in the place of me

ABSTRACT
This project proposal is of thrust switch. A device which can office on or off any instrument through just clap of a hand. The reason of this project is to show beyond the possibility of doubt the idea of clap switch by building a prototype of it. The movement of the circuit is simple. If we slam the lamp turns on and to switch it along clap again.

INTRODUCTION
With the increasing interest in comfort and luxury and charge in mind the disable persons a force switch was invented. A device which can turn on or off ~y instrument with just clap of a power. The basic idea of clap switch is that the electric microphone picks up the Sound of your claps, coughs, and the true of that book knocked off the synopsis. It produces a Small electrical signal which is amplified by the following transistor stage. Two transistors Cross associated as a bi-stable multi-vibrator make some ~ in. state at each signal. This is a heavy sensitive circuit, When sound is produced it is changed into full of fire energy through condenser mic and LED turns forward. LED turns on sound signal and turns right side automatically after few seconds, the LED in c~tinuance-time can be varied by changing the regard of 100mF capacitor. When Capacitor regard is changed from 100mF to 10mF the LED steady-time is decreased. In order to perform a clap switch, we have to unite the touch sensor (monostable mode of 555 and the transistorized gloomy sensor circuits. Whenever there is noisy sound produced near the electret condenser mic, make fast 2 of 555 gets triggered and it switches adhering the LED. The LED remains on for a definite time determined ~ the agency of Resistor and Capacitor. We can dispose the sensitivity of the circuit using a vacillating resistor in place of fixed resistor R5. The unfixed components used in making clap switch are listed in this world: -

1. 470R, 330R, 1K, 4.7K & 47K
2. 100nF x (2) & 100mF/10mF
3. BC547 x (2)
4. Electric Condenser Mic
5. 555 Timer
6. LED
7. 9V Battery
The boundary diagram of clap switch is for example follows: -

The pin configuration of 555 IC used...

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