Peter Marinsek wrote:
>
> Hello,
>
> I'm currently working in a car project where I want to drive opening and
> closing car windows (car alarm).
> And the question is:
> a simple circuit to detect when a DC motor is overloaded (when the
> window full close or full open the motor current increase)
>
> Thanks, Peter

When the motor stops rotating it'll stop making back EMF and
the voltage across it will drop. You can use an op amp as a comparator.

--
Anniepoo
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http://www.idiom.com/~anniepoo/depot/motors.html