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Title: earthquake knock vibration alarm
Page Link: earthquake knock vibration alarm -
Posted By: akhilesh kumar
Created at: Thursday 17th of August 2017 05:13:18 AM
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Title: working of knock vibration activated alarm
Page Link: working of knock vibration activated alarm -
Posted By: appu12
Created at: Thursday 05th of October 2017 04:00:40 AM
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KNOCK/VIBERATION ACTIVATED ALARM
This inexpensive project can be used as knock / vibration activated burglar alarm. Piezo electric sensor plate can be fixed on table, door, cupboard, window etc using cello tape or adhesive.
When an intruder knocks on them, piezo electric sensor converts mechanical vibrations into electrical vibration.
Electrical pulses are undergone amplification by transistor amplifier stages. Final transistor drives a piezo buzzer.
Time delay can be changed by adjusting value of capacitor connected across 220k resistor ....etc
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Title: pdf knock vibration activated alarm
Page Link: pdf knock vibration activated alarm -
Posted By: master-eng
Created at: Thursday 17th of August 2017 07:56:28 AM
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Security systems are designed for detecting the intrusion and unauthorized entry into the residential houses, commercial buildings, industries, and military surroundings. In our day-to-day life, security systems for home is a major concern to protect from burglary, property, and self defense from intruders. Generally, security systems for home can be designed using different technologies. Alarm security systems for home, alarm security system integrated with closed-circuit television surveillance, and so on. Different types of security systems ....etc
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Title: door knock alarm with timer circuit diagram
Page Link: door knock alarm with timer circuit diagram -
Posted By: prathyusha
Created at: Thursday 05th of October 2017 04:31:56 AM
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can you give me the complete details of door knock alarm with timer.
please do me this work as early as possible.
:(
B.rama krishna ....etc
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Title: circuit description of knock vibration activated alarm
Page Link: circuit description of knock vibration activated alarm -
Posted By: pradeep1709
Created at: Thursday 05th of October 2017 04:48:38 AM
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I want circuit description,working of circuit ,costing ....etc
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Title: circuit of knock vibration earthquake activated alarm
Page Link: circuit of knock vibration earthquake activated alarm -
Posted By: rakesh
Created at: Thursday 05th of October 2017 04:17:32 AM
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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
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Title: project report on knock or vibration activated alarm
Page Link: project report on knock or vibration activated alarm -
Posted By: amanaman
Created at: Friday 06th of October 2017 03:02:00 PM
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Title: simple knock alarm with piezo sensor
Page Link: simple knock alarm with piezo sensor -
Posted By: aries2903
Created at: Thursday 17th of August 2017 05:21:39 AM
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Title: principle of knock vibration activated alarm
Page Link: principle of knock vibration activated alarm -
Posted By: username
Created at: Thursday 05th of October 2017 04:49:31 AM
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Title: report for knock vibration activated alarm
Page Link: report for knock vibration activated alarm -
Posted By: venkateshplkd
Created at: Thursday 05th of October 2017 03:52:25 AM
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