Question on a PWM temp controller

Discussion in 'The Projects Forum' started by 1-3-2-4, Nov 23, 2013.

  1. 1-3-2-4

    Thread Starter Active Member

    Dec 26, 2008
    194
    1
    I was looking at the datasheet for a MIC502 controller and R1 & R2 which I assume is needed for the T1 how do I figure the value I need? Also after reading the datasheet a bit more I was not going to use the sleep function but from what I understand if I don't the fan would run all the time?
     
  2. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,798
    1,103
    According to the d/s if you ground the VSLP pin the sleep function is disabled, but you can turn the fan off by means of VT1 and/or VT2.
    R1 and R2 will depend on the particular thermistor resistance (usually specified at 25C) and on the temperature range applicable.
     
  3. 1-3-2-4

    Thread Starter Active Member

    Dec 26, 2008
    194
    1
    yeah at 25c it lists 4.7k-100k
     
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