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Title: circuit diagram of fire alarm using microcontroller 8051
Page Link: circuit diagram of fire alarm using microcontroller 8051 -
Posted By: davisth48
Created at: Thursday 17th of August 2017 05:30:07 AM
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To get full information or details of circuit diagram of fire alarm using microcontroller 8051 please have a look on the pages

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Title: investigatory project on fire alarm
Page Link: investigatory project on fire alarm -
Posted By: abhijit.dahiwalkar
Created at: Thursday 17th of August 2017 05:04:06 AM
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Title: robot circuit diagram of a war robot pdf mini robot project circuit diagram with pdf
Page Link: robot circuit diagram of a war robot pdf mini robot project circuit diagram with pdf -
Posted By: clibinspet
Created at: Friday 06th of October 2017 02:44:32 PM
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respected sir,
I want to build a mini robot having a bulldozer arm controlled by joystick for taking part in robot wars in our college..sir i want ckt diag bcs i want to implement by myself..
sir, I want to build a mini robot having a bulldozer arm controlled by joystick for taking part in robo wars in our college..sir i want the ckt diag bcs i want to implement myself..my email id is:[email protected] am eagerly waiting for ur rply.. ....etc

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Title: Simple Fire Alarm Circuit
Page Link: Simple Fire Alarm Circuit -
Posted By: kolisagar48
Created at: Thursday 17th of August 2017 04:56:51 AM
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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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Title: ppt on fire alarm using thermistor circuit
Page Link: ppt on fire alarm using thermistor circuit -
Posted By: siyad R
Created at: Thursday 17th of August 2017 05:45:28 AM
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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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Title: project file content needed for FIRE ALARM CIRCUIT
Page Link: project file content needed for FIRE ALARM CIRCUIT -
Posted By: hitesh_frnds
Created at: Thursday 17th of August 2017 05:15:46 AM
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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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Title: fire alarm circuit using microcontroller 8051
Page Link: fire alarm circuit using microcontroller 8051 -
Posted By: sitikanthaz
Created at: Thursday 17th of August 2017 06:03:15 AM
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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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Title: noise alarm mini project with circuit diagram
Page Link: noise alarm mini project with circuit diagram -
Posted By: satya
Created at: Friday 06th of October 2017 03:01:34 PM
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I'am a second year engineering student I want circuit diagram with details on above topic ....etc

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Title: fire alarm circuit doc
Page Link: fire alarm circuit doc -
Posted By: robin
Created at: Thursday 05th of October 2017 04:02:53 AM
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i need a document about the fire alarm circuit using thermister and ic555
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no registration only i need document of fire alarm circuit ....etc

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Title: free download project report of fire alarm
Page Link: free download project report of fire alarm -
Posted By: junky_funky44
Created at: Thursday 17th of August 2017 04:55:25 AM
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