I have a situation where a small DC motor is moving the flap from one side to the other. The flap can be in two positions but without limit switch. Change of position lasts about 3 seconds. The problem occurs when the motor reaches its position, but still has supply. After some time it can easily break gears. So I want to limit the current for the motor in at least one direction.
I have been thinking about this simple current limiter, but is it a problem when it gets reversed supply? Is it ok to solve it with one diode which will conduct most of the current in that situation?