Smoke Sensor Circuit

Discussion in 'The Projects Forum' started by zebin, Nov 1, 2009.

  1. zebin

    Thread Starter New Member

    Oct 30, 2009
    3
    0
    I am a new student in electrical engineering. I am planing to build a smoke sensor circuit. I will be grateful if anybody can supply me a list of the required parts along with the schematics.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Those parts are not any off-the-shelf set. For instance, there is more than one way of detecting smoke. Will the detector be battery or line powered? How will it indicate the alarm. Whose standards for safety must it fulfill?

    As a student, you get good experience in searching for such information.
     
  3. Externet

    AAC Fanatic!

    Nov 29, 2005
    758
    57
    Here is a simple differential circuit, and the parts should be easy to find.

    http://www.circuit-projects.com/miscellaneous/ldr-a-led-pair-smoke-detector-and-alarm-by-lm1801.html

    Modern units are available cheap at KMart, Walmart... You have to follow the traces to produce a schematic, dismantle it desoldering everything and you will have ALL the parts to put one together again and learn something in the process.
    If your intended 'sensor' is not exactly 'detection' as in those domestic alarms, modifying them to get readings instead of beeping may be another learning opportunity.
    Miguel
     
  4. zebin

    Thread Starter New Member

    Oct 30, 2009
    3
    0
    thanks for the advise and link. hope i will get more help regarding this matter..
     
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