Electric energy generation device for e.g. supplying transmitter, has magnetic circuit formed of movable part and fixed part that traverses central opening of coil two times by forming loop, where circuit is made of ferromagnetic material

摘要

The device has a magnetic circuit formed of a field coil (2), a fixed part and a movable part (5) through which a magnetic field circulates. Movement of the part (5) with respect to the fixed part creates a magnetic flux variation via the coil to produce an electric current in the coil. Voltage generated at terminals of the coil by the flux variation depends on time and speed of displacement of the part (5) with respect to the fixed part. The fixed part traverses a central opening of the coil two times by forming a loop. The circuit is made of a ferromagnetic material e.g. iron.