| 摘要 |
An autonomous-power radio device including an electromagnetic energy transducer having a permanent magnet ( 1 ), a soft-magnetic element ( 9 ), an electrical coil ( 6 ), and stop points ( 8 a- 8 d). The electrical coil surrounds a part of the magnetic circuit, wherein the permanent magnet ( 1 ) and said soft-magnetic element ( 9 ) are arranged to form a magnetic circuit with a first flux direction. At least one of the soft-magnetic element ( 9 ) and the permanent magnet ( 1 ) is mounted for rotary movement about an axis ( 4 ) with respect to the other. End points of the rotary movement are formed by the stop points ( 8 a- 8 d).
|
