lm 56

Discussion in 'The Projects Forum' started by abhinav kaushal, Jun 9, 2011.

  1. abhinav kaushal

    Thread Starter New Member

    May 24, 2011
    2
    0
    i am currently working under a project of thermostats in refrigerator.i want to change the hysteresis temperature of lm56 dual output sensor.

    Plz suggest me a way to do so...
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Us "lm56" as a search term to get a data sheet - http://www.national.com/mpf/LM/LM56.html#Overview

    From the overview -
    The data sheet will give the information to adjust the hysteresis.
     
  3. abhinav kaushal

    Thread Starter New Member

    May 24, 2011
    2
    0
    but i need it for 3 different conditions.
    winter
    summer
    autumn

    can i change the logic based on switches..
    or is there any other circuit to meet m y requirements.
    Plz comment
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,648
    2,347
    Hello,

    If you define the conditions for the different seasons, you can calculate the different resistor stacks needed.

    The stacks can be switched using a double pole selector switch.

    Bertus
     
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