| 摘要 |
<p>The chassis of the convertor is provided with pole shoes between which there is provided a ring permanent magnet (13). The insides of the pole shoes form an air gap (5, 16) in which an exciting coil (7, 17) can move in a straight line. The vibrating body (8, 18) sits on the exciting coil (7, 17). The vibrating body (8, 18) tapers in a direction away from the coils (7, 17) to form a point. The base of the conical vibrating body (8, 18) is fixedly connected to the coil (7. 17). Two such convertors can be combined in a mirror arrangement such that the points of the respective vibrating bodies (8, 18) are at a predetermined distance from each other and they oscillate along their axes (12) under the effect of a signal current providing a suction effect and hence a toroidal radiating system with a 360 degree circular characteristic.</p> |
