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Wednesday, September 30, 2009

Fire Alarm


Here we have used some what different concept.normally we use LDR for light sensitive circuits.but here we use this LDR to detect smoke.I will explain you, how we can do this.first of all we should keep in the kitchen or in a place where the fire can be occurred then keep LDR and the bulb face to face and let smoke to pass between the LDR and the light.when the smoke passes that area it begins to make a sound



7 comments:

Unknown said...

shalom... may i ask the specific number of the COB-chip on board of this circuit fire alarm? thank you sir...

Unknown said...

Please what is COB and what exactly is its value because i can't build this circuit with out knowing the value of this COB.
Thanks.
Mr. Johnson.

Zam said...

Hi,

Here I have used a COB.The purpose of using Cob is to generate a sound. you can use any type of sound generating IC like UM66. Keep in touch.

kalpesh said...

SIR, cob why use

Zam said...

we use COB to generate a sound.

rinarinza said...

Hi...

I am interested to know how the panel connect to computer to collect certain data?

Zam said...

Hi Rinarinza,

Yes you can connect this circuit with the computer but you have to write a program to detect the signal of the circuit

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