Hi, I'm hoping somone can point me in the right direction to get an electric motor working as it should. I have a woodworking machine with three single phase motors. The motors appear to share a start and run capacitor. Two of the motors run as expected but the third has started humming and not turning. It was working well then wasn't used for a couple of weeks and now has this problem. If I start the motor (disconnected from the cutters so no load) by hand it will turn but at a lower speed and very little torque. It will do this in either direction. Any thoughts anyone?

Hello, I am looking for a microwave motion detector that also has to be a tachometer. Every time the movement is registered detector records it as 1 movement. The area detector covers needs to be narrowed down. In my case, I am looking for something like 2 inch by 4-5 inch area. The detection distance from the sensor should not be more than 1 meter. Initially, I thought about using laser no contact tachometer but it does require reflective tape. Applying reflective tape will not work for what I need. Basically, microwave motion tachometer I am looking for needs to work as a laser no contact tachometer but without reflective tape. Also, the MPS (movement per second) will not be more than 20; so, laser is not necessary. Please, let me know if it is feasible and actually exists. Thank you.