发明名称 |
Excitation circuit for piezo-electric sound generators |
摘要 |
An excitation circuit wherein the energy of a charged coil is discharged via a sound generator. A coil and a capacitance of the sound generator are tuned to one another such that a corresponding oscillatory frequency is identical to a predetermined resonant frequency of the sound generator.
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申请公布号 |
US4736192(A) |
申请公布日期 |
1988.04.05 |
申请号 |
US19840622127 |
申请日期 |
1984.06.19 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
ANGERER, RICHARD |
分类号 |
G10K9/122;B06B1/02;G01N29/34;(IPC1-7):G08B3/00 |
主分类号 |
G10K9/122 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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