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Need suggestion for thermostat circuit

Discussion in 'General Electronics Discussion' started by BuzzTronic, May 6, 2018.

  1. BuzzTronic

    BuzzTronic

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    May 6, 2018
    HI ALL,

    I have an air conditioner with removed electronics. I can manually control the compressor and blower easily enough, but there is a little freeze sensor that changes resistance as the temperature changes. I need to use that to interrupt the compressor relay.

    I'm thinking there must be a way to use a simple transistor based circuit so when resistance reaches a threshold, it stops the relay trigger power. Pretty simple but I dont know enough to design something, so looking for some suggestions.

    Thank You!
     
  2. kellys_eye

    kellys_eye

    4,281
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    Jun 25, 2010
    hevans1944 likes this.
  3. BuzzTronic

    BuzzTronic

    2
    0
    May 6, 2018
    thanks, but I am looking to learn how to make this as simple as possible with few components...

    suggestions?
     
  4. kellys_eye

    kellys_eye

    4,281
    1,144
    Jun 25, 2010
    hevans1944 likes this.
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