发明名称 |
Circuit for driving an ultrasonic dental tool at its resonant frequency |
摘要 |
Circuitry is disclosed for driving the transducer assembly of a dental handpiece at its resonant frequency. The circuitry includes a variable frequency oscillator and a peak-detecting processor which allows the oscillator to sweep through a continuum of frequencies until maximum current in the transducer driving coil is sensed.
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申请公布号 |
US4403176(A) |
申请公布日期 |
1983.09.06 |
申请号 |
US19790066470 |
申请日期 |
1979.08.13 |
申请人 |
CALIFORNIA TECHNICS, LTD. |
发明人 |
CRANSTON, DALE O. |
分类号 |
A61C1/07;H03L7/02;(IPC1-7):H02K33/00 |
主分类号 |
A61C1/07 |
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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