14-03-2012, 05:04 PM
i am kalpesh chaudhary and i want ppt of clap switch
14-03-2012, 05:04 PM
i am kalpesh chaudhary and i want ppt of clap switch
05-06-2012, 07:27 PM
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06-06-2012, 10:55 AM
to get information about the topic "clap switched " full report ppt and related topic refer the link bellow https://seminarproject.net/Thread-clap-switch-theory
09-01-2014, 12:11 PM
Clap Switch Clap Switch.docx (Size: 34.55 KB / Downloads: 19) INTRODUCTION The clap is a device that is simply operated by sound i.e. switch ‘ON’ or ‘OFF’ the connected device through a clap through a clap sound. This is really a miracle for handicap person. It may be a thing of fun for all age hobbyists. The circuit will switch on any appliance connected to it. (it may be a bulb, a fan, tape recorder or even a T.V. set )through its relay (acting as a switch) on the sound of a clap and will switch it ‘off’ on the sound of second clap. Based on the comments of the many people who built this circuit successfully, and the few who tried to and failed, the circuit was revised. Two changes, mainly: the filament lamp was replaced by a bunch of LEDs, and the output stage was coupled to the collector instead of the emitter of the bistable. Brief Working 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 built my prototype on a cardboard cover from an old notebook. Punched holes using dividers and placed the components down flat. It might look neater if you draw the circuit diagram on to the board before you begin. A photo is included below. The components are from my junk box and I found that it works even if you omit that 4.7 Megohm resistor. Your results may vary. COMPONENTS REQUIRED PCB RESISTORS CAPACITORS TRANSISTOR(BC547) DIODES Relay Preset CONDENSER MIC 555 timer IC 4017 counter IC LED MIKE BATTERY |
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