I have come across a potentiometer which I have never seen before. What's different is that the wiper does not have an electrical connection. There still are three connections but the all connect to a little circuit board that has a shinny black material on the back. It appears that you can place any piece of metal on the black material to set the position of the pot. I measure a constant 3.3V between the red and black wires and the output based on the placement of the metal object on the black material can be measured on the blue wire. (see attached photo)
The device I have is from the torque control from a Dewalt cordless drill.
Has anyone else seen something like this or know anything more about these devices?
Ed
The device I have is from the torque control from a Dewalt cordless drill.
Has anyone else seen something like this or know anything more about these devices?
Ed