Clap Switch
Sound operated switch using a simple transistor circuit
The operation is simple. Clap and the lamp turns on. Clap again and it turns off.
The electret microphone picks up the sound of your claps, coughs, and the sound of that book knocked off the table. It produces a small electrical signal which is amplified by the succeeding transistor stage. Two transistors cross connected as a bistable multivibrator change state at each signal. One of these transistors drives a heavier transistor which controls a lamp.
I ....etc

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Abstract

The objective: I set out to answer the following question: Which new roofing material, proposed to meet the requirements of recent California legislation, reflects the most light and reaches the lowest maximum temperature? I predicted that a white roofing material would reflect the most light and reach the lowest maximum temperature.
Methods/Materials

My materials included: a light meter, a heat lamp with 2 bulbs, 2 thermometers, 2 plastic storage boxes, 6 roofing samples including: ....etc

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The Anti-Collision Device (ACD) is a self-acting microprocessor-based data communication device designed and developed by Konkan Railway.

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A hydraulic lift is a simple machine that uses the transfer of pressure through an enclosed static liquid medium (usually an oil of some sort) to lift heavy machinery. In accordance with Pascal's principle, the pressure is transmitted from one end of the hydraulic lift to the other undiminished. When the area of the piston that receives the pressure is larger than that of the initial piston, the upward force exerted by the second piston is several times stronger than the downward force exerted on the ....etc

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Introduction
Clap Switch is a basic Electronics mini-project, made with the help of the basic components. Clap Switch has the ability to turn ON/OFF any electrical component or circuit by the clap sound.

It is known as Clap Switch, because the condenser mic which will be used in this Project will have an ability to take the sound having same pitch as the Clap sound as the input. Although it doesn t mean that the sound will have to be of Clap sound, it can be any sound having the same high pitch as of Clap. We can also say that it converts ....etc

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What is working principle of Sound Operated Switch Using A Simple Transistor Circuit and there advantages and disadvantages,Limitations,Application of clap swtich.
What is the working principle of Sound Operated Switch Using A Simple Transistor Circuit and there Advantages,Disadvantages,Limitation and Application and Cricuit Diagram of Clap Switch. ....etc

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