What is this tiny rotating piece of hardware that I found inside my Samsung GE1202? It has E9C written in blue on it.
These types of motor configurations are used in the cellphone's vibrate/buzzer function. Here is a Youtube video demonstrating the vibrate function and two other references:
- How it works:Cell phone vibration motor?
- iPhone 5 / 5S Vibrator Motor Replacement
- Vibration Motors by Precision Microdrives
These are called Eccentric Rotating Mass (ERM) vibration motors. This type of motor technology is also used in haptic feedback technology.
That is a micro vibrating motor to produce the "buzz" effect from your phone. I used much much larger vibrating motors, air driven, on the bottom of my Class 7 dump truck. Mounted under the bed, they would vibrate the bed, loosening the material so it would flow out cleanly.