公开(公告)号：US4554477A

公开(公告)日：1985-11-19

申请号：US554908

申请日：1983-11-25

Applicant: Henry K. Ratcliff

Inventor： Henry K. Ratcliff

IPC: B06B1/02 ,  H01L41/08

CPC classification number: B06B1/0284 ,  B06B2201/55 ,  B06B2201/58 ,  B06B2201/71

Abstract: A circuit for driving a plurality of ultrasonic transducers uses an oscillator drive means, first means responsive to the current supplied to the transducers is fed back to vary the oscillator frequency to maintain the transducer current at a maximum level, and second means, independent of the first means, are provided to cyclically sweep between upper and lower limits the oscillator frequency determined by the first means. This assures that each transducer experience resonance at least once each sweep.

Abstract translation: 用于驱动多个超声换能器的电路使用振荡器驱动装置，响应于提供给换能器的电流的第一装置被反馈以改变振荡器频率以将换能器电流保持在最大电平，第二装置独立于 第一装置被提供以在上限和下限之间循环扫描由第一装置确定的振荡器频率。 这确保每个传感器每次扫描至少经历一次共振。

公开(公告)号：US4588917A

公开(公告)日：1986-05-13

申请号：US682236

申请日：1984-12-17

Applicant: Henry K. Ratcliff

Inventor： Henry K. Ratcliff

IPC: B06B1/02 ,  H01L41/08

CPC classification number: B06B1/0253 ,  B06B2201/55 ,  B06B2201/58

Abstract: An ultrasonic generator system comprising a power oscillator which provides an A.C. signal for driving one or more ultrasonic transducers (TDM). The power oscillator includes a transistor (Tr.sub.1) in series wtih the parallel combination (for A.C. purposes) of a capacitor (C.sub.1) and an inductance (L.sub.1). The transducer load TDM is connected across the inductance L.sub.1 without the use of an intermediate transformer.

Abstract translation: 一种超声波发生器系统，包括提供用于驱动一个或多个超声换能器（TDM）的交流信号的功率振荡器。 功率振荡器包括与电容器（C1）和电感（L1）的并联组合（用于交流目的））串联的晶体管（Tr1）。 传感器负载TDM在电感L1两端连接，而不使用中间变压器。