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controlling peltier temperature

Discussion in 'General Electronics Discussion' started by johnny97, Dec 6, 2010.

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  1. johnny97


    Dec 4, 2010
    hi all, i was given a peltier unit to play with. heres the details for the unit.

    Type number: TEC1-12706
    Couples: 127
    Umax (V): 15.2V
    I max (A): 6A
    Tmax (degree Celsius): 67

    i have fans and heatsinks attached to the hot/cold sides and a 12 volt car battery to power the unit.

    what i like to know is if i place a 5 ohm/15 watt linear potentiometer between the unit and battery, would it be sufficient to control the unit's temp safely?

    please note that i'm new to electronics. thanks :)
  2. Resqueline


    Jul 31, 2009
    I'm not absolutely sure but I fear that the potentiometer is at risk of getting overheated. Maybe it'll get by if you put it in the airstream of one of the fans.
    Also, you won't get a temp control with a rheostat, just a power control, going down to approx 1/3rd of full current. But for play it's good enough doing it that way.
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