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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: abstract for fire alarm using thermistor
Page Link: abstract for fire alarm using thermistor -
Posted By: sweet_neha
Created at: Thursday 17th of August 2017 04:46:35 AM
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please show report on the investigatory project fire Alarm full report ....etc
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Title: working principle of fire alarm using thermistor
Page Link: working principle of fire alarm using thermistor -
Posted By: tinu
Created at: Friday 06th of October 2017 03:10:50 PM
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To get full information or details of fire alarm using thermistor please have a look on the pages
http://seminarsprojects.net/Thread-simple-fire-alarm-circuit
if you again feel trouble on fire alarm using thermistor please reply in that page and ask specific fields in fire alarm using thermistor ....etc
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Title: http seminarprojects net t efy projects circuit diagram of automatic school bell sys
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Posted By: nikunj
Created at: Thursday 05th of October 2017 05:11:28 AM
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Title: advantages of fire alarm using thermistor in pdf
Page Link: advantages of fire alarm using thermistor in pdf -
Posted By: veena_niit
Created at: Thursday 17th of August 2017 04:43:08 AM
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Hi,am a college student doing a project on fire alarm using a thermistor. i humbly need your help in my project and your help will be much appreciated. i need advantages of using this kind of fire alarm. ....etc
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Title: pcb layout of temperature controlled fan using thermistor thermistor and ic 741
Page Link: pcb layout of temperature controlled fan using thermistor thermistor and ic 741 -
Posted By: varun
Created at: Thursday 05th of October 2017 04:49:31 AM
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I am looking for PCB layout of temperature controlled fan using thermistor and IC 741. Can anyone help, please? ....etc
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Title: http seminarprojects net t embedded based accident alert ppt
Page Link: http seminarprojects net t embedded based accident alert ppt -
Posted By: sangram79
Created at: Thursday 17th of August 2017 06:54:55 AM
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Carpooling (also car-sharing, ride-sharing, lift-sharing and covoiturage) is the sharing of car journeys so that more than one person travels in a car.
By having more people using one vehicle, carpooling reduces each person's travel costs such as fuel costs, tolls, and the stress of driving. Carpooling is also a more environmentally friendly and sustainable way to travel as sharing journeys reduces carbon emissions, traffic congestion on the roads, and the need for parking spaces. Authorities often encourage carpooling, especially during per ....etc
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Title: advantages and disadvantages of a fire alarm using thermistor
Page Link: advantages and disadvantages of a fire alarm using thermistor -
Posted By: anjukrishnaj7
Created at: Thursday 17th of August 2017 05:05:33 AM
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fire alarm using thermistor
advantages and disadvantages
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), which drives the speaker to generate alarm sound. The frequency of NE555 depends on the values of resistances R5 and R6 and capacitance C2. When thermistor becomes hot, it gives a low-resistance path for the positive voltage to the base of transistor T1 through diode D1 and resistance R2. Capacitor C1 ....etc
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Title: http seminarprojects net t ppt of dark detector using ic 555 61967
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Posted By: jolly16
Created at: Thursday 17th of August 2017 05:53:04 AM
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