i need everything about light activated leds including abstracts,blockdiagram,circuit diagram materials needed and theory of operation
....etc

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Abstract

This paper presents the design of a clap activated switch device that will serve well in different phono-controlled applications, providing inexpensive key and at the same time flee from false triggering. This involves the design of various sages consisting of the pickup transducer, low frequency, audio low power and low noise amplifier, timer, bistable and switches. It also consists of special network components to prevent false triggering and ensure desired performance objectives. A decade counter IC serves the bistable fu ....etc

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CLAP SWITCH


Here s a clap switch free from false
triggering. To turn on/off any ap
pliance, you just have to clap
twice. The cir-cuit changes its output state
only when you clap twice within the set
time period. Here, you ve to clap within 3
seconds.
The clap sound sensed by condenser
microphone is amplified by transistor T1.
The amplified signal provides negative pulse
to pin 2 of IC1 and IC2, triggering both the
ICs. IC1, commonly used as a timer, is
wired here as a monost ....etc

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construction details,objectives,advantages, of pamban bridge ....etc

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to get iformation about the topic knock vibration earthquake activated alarm full report ppt and related topic refer the page link bellow

http://seminarsprojects.in/showthread.php?mode=linear&tid=38400

http://seminarsprojects.in/showthread.php?tid=36216&google_seo=lwqC++&pid=80553 ....etc

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An infra-red or wireless remote control has the disadvantage that the small, handy, remote transmitter is often misplaced. The sound operated switch has the advantage that the transmitter is always with you. This project offers a way to control up to four latching switches with two claps of your hand. These switches may be used to control lights or fans or anything else that does not produce too loud a sound. To prevent an occasional loud sound from causing malfunction, the circuit is normally quiescent. The first clap takes it out of standby ....etc

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To get full information or details of clap activated switch please have a look on the pages

http://seminarsprojects.net/Thread-design-of-a-clap-activated-switch

http://seminarsprojects.net/Thread-design-of-a-clap-activated-switch?pid=26326&mode=threaded

http://seminarsprojects.net/Thread-design-of-a-clap-activated-switch?pid=38118&mode=threaded

if you again feel trouble on clap activated switch please reply in that page and ask specific fields in clap activated switch ....etc

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To get full information or details of vibration activated alarm project please have a look on the pages

http://seminarsprojects.net/Thread-vibration-activated-alarm

if you again feel trouble on vibration activated alarm project please reply in that page and ask specific fields in vibration activated alarm project ....etc

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plz send the content and report on clap based digital volume controller mini project ....etc

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What are the materials needed for the market survey of a clap switch project ....etc

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