Reversing polarity switch with timer

Thread Starter


Joined Nov 30, 2011
Hi, first of all I'm new to this forum.

My problem is I want to enable a 12v motor using a SPST switch, when pressed the motor turns for a specified time (sec), and when the switch is unlatched the motor turns the other way around again for a specified time (sec).

I want to build a circuit similar to that of a vehicles power antenna wherein the antenna goes up when the radio is on and goes down when the radio is turned off.