| 摘要 |
<p>An electromagnetic generator (20) comprises a stator (2) formed by a toroidal tube having an endless internal channel or bore (22) and a complementary rotor formed by a spherical ball permanent magnet (3) which is mounted within the bore and is freely movable through the bore (22). A plurality of winding coils (1) are mounted on the stator (2) and are circumferentially spaced-apart on the stator (2). Each coil (1) is electrically connected to a low drop AC rectifier (5). A magnetically operated reed switch (4) associated with each coil (1) is mounted in the circuit between the coil (1) and the rectifier (5) and is mounted adjacent the coil (1) on the stator (2). Each reed switch (4) has a normally open position and will close when the ball magnet (3) is adjacent the associated coil (1), moving to the open position again when the ball magnet (3) moves away from the coil (1). Each coil (1) consists of two semicoils (11) and (12) and can contain one or more turns. Semicoils (11, 12) are wound in opposite directions to produce current bursts of inversed phases in the semicoils (11, 12). Upon inclining the toroidal tube (21), for example due to wave action, the ball magnet (3) rolls through a winding coil (1), magnetic flux through the coil (1) changes, and electric current is induced by the changing magnetic field.</p> |
