Driving a peltier with a constant current source

Discussion in 'General Electronics Chat' started by Gibson486, Sep 12, 2016.

  1. Gibson486

    Thread Starter Member

    Jul 20, 2012
    199
    12
    Are their any advantages to this? Anyone every try this?

    I keep reading that it likes to be driven by current, but everyone just does the voltage driven model. If we make the driver constant current, wouldn't that take care of the effect of the resistance changing?
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
    760
    Resistance will change as the temperature of peltier changes.
    A CC might decrease the output of the peltier

    but on the hand this is not tried by me so I am skeptic. It could be a better method.
     
  3. wayneh

    Expert

    Sep 9, 2010
    12,123
    3,047
    The apparent resistance doesn't change a lot, so there's not a big difference between a constant voltage or constant current strategy. People use whatever is easiest.
     
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