To get full information or details of circuit diagram of fire alarm using microcontroller 8051 please have a look on the pages

http://circuitstodaywp-content/uploads/2012/10/thermometer-using-8051.png

https://myclassbook.files.wordpress2014/01/digital-voltmeter-using-8051-micrcontroller.jpg

http://electronicshubwp-content/uploads/2013/10/Fire-Alarm-Circuit-Using-Germanium-Diode.jpg

https://myclassbook.files.wordpress2014/04/digital-clock-using-8051-microcontroller-and-lcd-display.jpg?w=490

http://kavediasir.yolasiteresources/Circuit%20to ....etc

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project file content needed for FIRE ALARM CIRCUIT

Working of fire alarm circuit
Working is based on the switching property of transistor.
The thermistor and R1 forms a potential divider network which drives the transistor.
The heart of this circuit is a thermistor. Thermistors are low-cost, easily-available temperature sensors widely used for uncomplicated temperature measurements.
Thermistors are temperature sensitive resistors. When temperature increases resistance offered by the thermistor decreases and vice versa. At normal temperature, t ....etc

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I urgently need a fire alarm circuit that detects heat using lm35 sensor(using adc to convert analog to digital) and after the temperature exceeds a said limit (say 50deg) the buzzer starts to buzz..please help urgently!! ....etc

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To get full information or details of design and implementation of automatic fire alarm system based on wireless sensor networks please have a look on the pages

http://seminarsprojects.net/Thread-a-seminar-report-on-intrusion-detection-system

if you again feel trouble on design and implementation of automatic fire alarm system based on wireless sensor networks please reply in that page and ask specific fields in design and implementation of automatic fire alarm system based on wireless sensor networks ....etc

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how to interface micro-controller based fire alarm with computer
how to interface a computer system micro-controller based fire alarm ....etc

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i need a document about the fire alarm circuit using thermister and ic555
[email protected]
no registration only i need document of fire alarm circuit ....etc

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Simple Fire Alarm Circuit
Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke produced during fire.The circuit produces an audible alarm when the fire breaks out with smoke.
When there is no smoke the light from the bulb will be directly falling on the LDR.The LDR resistance will be low and so the voltage across it (below .6V).The transistor will be OFF and nothing happens.When there is sufficient smoke to mask the light from falling on LDR, the ....etc

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Many fire alarm circuits are presented here,but this time a new circuit using a thermistor and a timer to do the trick. The circuit is as simple and straight forward so that, it can be easily implemented. The thermistor offers a low resistance at high temperature and high resistance at low temperature. This phenomenon is employed here for sensing the fire.

The IC1 (NE555) is configured as a free running oscillator at audio frequency. The transistors T1 and T2 drive IC1. The output (pin 3) of IC1 is couples to base of transistor T3 (SL100), w ....etc

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Actually i am looking for the project of android having name Location based alarm System that detect the location of the mobile owner when a certain area is entered and alert the phone owner when he/she entered in a specified area and send an alert message.

Kindly help me i need this project within 48 hours.

Regards:

Fahad Majeed.

Email: [email protected]
cell No. 0333-9924685 ....etc

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Hello team..I'm eric phillips a student of the University of benin , Nigeria. I'm working on this project as part of my final year. I have less than 4 days too submit complete write up on this topic. Fire alarm system with gsm alert.my email is [email protected] ....etc

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