Electromagnetic generator for producing electricity from mechanical oscillation energy for autonomous wireless sensor, comprises printed circuit board which has bore and spiral conductive strip which is arranged around bore

摘要

The electromagnetic generator comprises a printed circuit board (1) which has a cylindrical bore (7) and a spiral conductive strip which is arranged around the bore. A permanent magnet (6) is moved in the bore in a longitudinal direction, where a spring element is mechanically coupled with the permanent magnet having the printed circuit board. An independent claim is also included for an autonomous wireless sensor with a wireless device.