peltier element control

Discussion in 'The Projects Forum' started by stella00222, Nov 7, 2012.

  1. stella00222

    Thread Starter New Member

    Oct 29, 2012
    2
    0
    hi
    am currently doing a project with peltier element . is there any any some circuit to control peltier element that produce voltage in a range of +4.7 & -4.7?
     
  2. JDT

    Well-Known Member

    Feb 12, 2009
    658
    85
    An "H-bridge" is one way of doing this.

    The Peltier is a current controlled device. Instead of continuously varying the current (or voltage), it is better to use a fixed current and use PWM (pulse width modulation) to vary the heating or cooling power.
     
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