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  • temperature control circuit

    temperaturehelp

    Member

    Updated: Oct 25, 2024
    Views: 1.1K
    I have project in which i have to create a soultion which will mantain the temperature of a living space with a volume of 400m3 between 25-30 degrees centigrade.

    I can use the following components

    lm35 TEMPERATURE SENSOR
    lm358 Operational amplifer
    3 X lm311 compararators
    74ls32 Quad OR Gate
    74ls04 Hew NOT Gate
    2 X 12 Volt Relays

    If anybody could design us a circuit diagram this would be great!!! many thanks my friends
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Replies

  • gohm

    Member • Feb 25, 2009

    Have you attempted to diagram yourselves yet? Any electrical students on your team?
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  • ashuashi

    Member • Feb 25, 2009

    temperaturehelp
    I have project in which i have to create a soultion which will mantain the temperature of a living space with a volume of 400m3 between 25-30 degrees centigrade.

    I can use the following components

    lm35 TEMPERATURE SENSOR
    lm358 Operational amplifer
    3 X lm311 compararators
    74ls32 Quad OR Gate
    74ls04 Hew NOT Gate
    2 X 12 Volt Relays

    If anybody could design us a circuit diagram this would be great!!! many thanks my friends
    Hey Dear,

    Control of temperature will depend on various parameters.

    1. What is the ambient temperature. Its variations in summers & winters or the whole year.

    2. Do you need to cool the space or heat the space.

    3. What will you use to cool/heat the space.

    4. Are you aware of PID controls.

    Sorry to bombard you with questions. But these are important points required to control the temperature
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  • raithrovers1

    Member • Mar 9, 2009

    I would probably start by saying you have two 12 volt relays. I would guess that these will control your output circuit.
    If the temperature goes above 30 degrees then you will have to figure out how to send a 12 volt signal to the relay which will then turn on the cold air.
    Also if the temperature goes below 25 degrees you send a 12V signal to the other relay which will switch on the heating.
    All the other components are used to convert the small signal that the temperature sensor gives out to a 12v signal that switches on and off when required.

    For any UPS or power needs please contact #-Link-Snipped-#
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