Default, Thank You very much for you input, with it I learned the "Zero
Seeking" term...

What I want to acomplish is a movable faceplate for a car audio system that
would Act when the power was feed to the circuit and then return when
powered off.

Like this.

car key in On position go from A to B and Stop
car key in OFF position go from B to A and stop

I havent yet startred the face plate movement design because I havent yet
decided how far the movement should go, althought taht is not important to
the circuit design...

Once again Thank you for your input...


Paulo Gomes