| 摘要 |
<p>An electroacoustic converter (1) is disclosed for converting electrical energy into mechanical vibrations at a predetermined frequency. The converter (1) is supplied with alternating electrical power from the power supply. The converter has metal front and rear driver masses (3, 5), front and back ceramic stacks (7, 9), a spacer (11) between the front and back ceramic stacks, and a fastener (13) extending axially of the converter coupling the front and back driver masses to clamp the ceramic stacks and the spacer between the front and back drivers. The front and back ceramic stacks are of piezoelectric ceramic material such that when energized with an alternating electrical power from the power supply the piezoelectric material renders the converter resonant at the predetermined frequency. The spacer, and front and back driver masses are provided with fins to radiate heat from the converter. The converter exhibits substantially even temperatures and a vibrational node within the spacer.</p> |
