thanks for replaying,
Well I have never used an H bridge, but I have heard a lot about them and know about their function. I am trying to move the motor on both directions. If I want the motor to turn on clockwise direction I should enable two transistors, and if want to turn on the other direction should enable the other two transistors.
I will control a servo motor subtracting the reference and the feedback signal which as a result will give both + and - voltage. The question is, how do I control the servo using the H bridge?