| 摘要 |
A stack of piezoelectric discs for driving the diaphragm of a transducer such as a loudspeaker. The discs are arranged in pairs with the outer edges of each pair supported by engagement with an O-ring against their planar faces. The pairs are connected by studs fixed at the centers of the discs. One end of the stack is secured to a support, and the other end is connected to the diaphragm. In an alternative embodiment, another disc is attached to the stack, with an O-ring cemented between its nodal circle and a rigid support, and a diaphragm is attached to the rim of the disc.
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