Subject: TEC/peltier Controller
By: Phillip Beynon (IP: 24.85.86.*)
Written on: 20-08-2005 02:16

M/25/Vancouver BC Canada

Hi, I'm looking for a simple circuit to control my 170w peltier. The temperature adjustment can be a simple pot. Imput is 12v. Minimum range from 0'c to 50'c. If the circuit works, I'll send you one.


email: phillip at

By: Tillmann (IP: 146.140.7.*)
Written on: 13-09-2005 15:46


the task is not easy, due to the power involved, and a simple circuit is certainly not going to do it. The proper way to solve the problem is to control the power using pulse width modulation.

You can use an integrated circuit specifically designed for the task, such as the Dallas/Maxim MAX1968, a PWM switch-mode driver designed specifically for controlling peltier elements.

Datasheet: See

By: Tillmann (IP: 146.140.7.*)
Written on: 13-09-2005 15:50

PS: I just noticed that the exact part I linked to is not powerful enough for your purpose, but there are other parts available from the same manufacturer - see the links at the end of the PDF.
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