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公开(公告)号：US3921014A
公开(公告)日：1975-11-18
申请号：US40607273
申请日：1973-10-23
申请人： US NAVY
发明人： JAYNE THEODORE D
摘要： A system providing an electrical pulse to mechanically drive a first piezoelectric element upon receipt of an electrical signal from a mechanically driven second piezoelectric element. The system is adapted to provide a preselected frequency of from 16 to 115 impulses per second. The electrical signal from the second piezoelectric element is processed through a voltage comparator by comparison with a reference voltage and applied to a pulse stretcher circuit. The pulse stretcher circuit controls the gate of a silicon controlled rectifier which provides a signal from a power supply to an autotransformer that boosts the voltage from the power supply and applies the voltage to the second piezoelectric element. The pulse stretcher provides the additional function of preventing oscillation in the circuit.
摘要翻译： 一种提供电脉冲以在从机械驱动的第二压电元件接收到电信号时机械地驱动第一压电元件的系统。 该系统适于提供每秒16至115个脉冲的预选频率。 来自第二压电元件的电信号通过与参考电压相比较的电压比较器进行处理并施加到脉冲展宽电路。 脉冲担架电路控制可控硅整流器的栅极，其提供从电源到自耦变压器的信号，该信号从电源提升电压并向第二压电元件施加电压。 脉冲放大器提供了防止电路中的振荡的附加功能。
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2.发明授权Thickness-extensional mode piezoelectric resonator with poisson{3 s ratio less than one-third 失效厚度 - 拉伸模式压电谐振器，泊松比（3s）小于三分之一
公开(公告)号：US3891872A
公开(公告)日：1975-06-24
申请号：US48145174
申请日：1974-06-20
CPC分类号： H03H9/177 , H03H2003/0435
摘要： A piezoelectric resonator comprising a thin and flat plate of piezoelectric material having a recess provided at least on one of two major surfaces thereof and a pair of electrodes applied to both of the major surfaces at the position of the recess. The piezoelectric plate has a Poisson''s ratio of less than one third and mode in the thickness-extensional vibration when an electrical signal is applied between the electrodes. The relation between the thickness of the plate at the recess and the thickness of the plate at the flat part is such as to make the wave number of the flat part imaginary at the resonant frequency of the thickness-extensional vibration of the recess part.
摘要翻译： 一种压电谐振器，包括压电材料的薄板和平板，其具有设置在其两个主表面中的至少一个表面上的凹部和在凹部的位置处施加到两个主表面的一对电极。 当在电极之间施加电信号时，压电板具有小于三分之一的泊松比和厚度 - 延伸振动的模式。 凹部处的板的厚度与平板部的板的厚度之间的关系是使平坦部的波数以凹部的厚度 - 伸展振动的共振频率为虚。
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公开(公告)号：US3882430A
公开(公告)日：1975-05-06
申请号：US48284874
申请日：1974-06-25
申请人： THOMSON CSF
发明人： MAERFELD CHARLES
摘要： The surface acoustic wave devices of the invention utilise the reflection of acoustic waves at gratings of irregularly spaced discontinuities, said devices comprising between an input (3) and an output (4) transducer, and gratings (2) of discontinuities, 3 dB directional couplers (5) separating the incident acoustic waves from the delayed reflected acoustic waves and making it possible to create dispersive delay lines and band-pass filters.
摘要翻译： 本发明的表面声波装置利用在不规则间隔不连续的光栅处的声波的反射，所述装置包括在输入（3）和输出（4）换能器之间，以及不连续的光栅（2），3dB定向耦合器 （5）将入射的声波与延迟反射的声波分离，并且可以产生分散延迟线和带通滤波器。
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公开(公告)号：US3878408A
公开(公告)日：1975-04-15
申请号：US34857473
申请日：1973-04-06
申请人： SUWA SEIKOSHA KK
发明人： NEMOTO ISAO
摘要： The oscillator circuit of a quartz crystal timepiece is provided with a tuning capacitor device consisting of a stepped variable capacitor and a continuously variable capacitor connected in parallel with each other and in series with said quartz crystal.
摘要翻译： 石英晶体钟表的振荡电路设置有由阶梯式可变电容器和连续可变电容器组成的调谐电容器件，它们彼此并联并与所述石英晶体串联。
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公开(公告)号：US3872411A
公开(公告)日：1975-03-18
申请号：US30536372
申请日：1972-11-10
发明人： WATANABE TAKAO , KOHCHI AKIRA , FUJII TOSHINOBU
摘要： A quartz crystal resonator resonating in a thickness shear mode of vibration at an increased frequency is disclosed, the resonator including a quartz crystal plate which is formed with recesses on both sides thereof for receiving therein central and lead electrodes so that the spurious response of the plate can be suppressed.
摘要翻译： 公开了以增加的频率在振动的厚度剪切模式下谐振的石英晶体谐振器，该谐振器包括在其两侧形成有凹部的石英晶体板，用于在其中容纳中心引线电极，使得板的杂散响应 可以抑制。
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公开(公告)号：US3866068A
公开(公告)日：1975-02-11
申请号：US45283874
申请日：1974-03-20
申请人： LEWIS CORP
发明人： KRENICKI JOSEPH , HUNICKE RAYMOND L
CPC分类号： B06B1/0284 , B06B2201/71
摘要： A feedback oscillator circuit provides a load waveform which is intentionally distorted, delivering plural and shifting frequency energy to and from a piezoelectric crystal transducer which operates an ultrasonic cleaner; the transducer is thus made to vibrate in timed bursts, while automatically shifting between different predominant frequencies during each burst. By adjusting specific circuit components, the duration and timing of predominant frequencies generated by the circuit is controlled. This automatic frequency shifting mode of operation provides improved cavitation, controllable for a specific desired result, and therefore provides superior cleaning in the cleaning tank.
摘要翻译： 反馈振荡器电路提供有意失真的负载波形，向操作超声波清洗器的压电晶体换能器提供多个和移位频率能量; 因此，换能器以定时突发振动，同时在每次突发期间自动地在不同的主频之间移动。 通过调整特定的电路元件，控制由电路产生的主频的持续时间和时序。 这种自动变频操作模式提供了改进的气蚀，对于特定的期望结果是可控的，因此在清洗槽中提供了优异的清洁。
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公开(公告)号：US3858064A
公开(公告)日：1974-12-31
申请号：US39311173
申请日：1973-08-30
申请人： SPERRY RAND CORP
发明人： SCHISSLER L
IPC分类号： G01L1/16 , G01P15/097 , G10K11/36 , H01V7/00
CPC分类号： G01L1/165 , G01P15/0975 , G10K11/36
摘要： Transducer devices employing relative changes in the acoustic propagation characteristics of Rayleigh waves flowing along polished surfaces of a thin elastic member yield a measure of the degree of flexing or surface strain of an elastic member. Stable signal processing and excitation circuits supply outputs proportional to strain, free of mode locking and other spurious interactions of the oscillatory circuits that include the surface wave delay elements.
摘要翻译： 使用沿着薄弹性构件的抛光表面流动的瑞利波的声学传播特性的相对变化的传感器装置产生弹性构件的弯曲程度或表面应变的量度。 稳定的信号处理和激励电路提供与应变成比例的输出，无模式锁定和包括表面波延迟元件的振荡电路的其他杂散相互作用。
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公开(公告)号：US3845419A
公开(公告)日：1974-10-29
申请号：US43037974
申请日：1974-01-02
申请人： NUDD G
发明人： NUDD G
CPC分类号： H03H9/14555 , H03H9/14517 , H03H9/6493
摘要： Acoustic surface wave devices having transducers exhibiting a weighted conversion loss versus frequency characteristic without apodization are disclosed wherein equally overlapped interdigitated electrodes are disposed on a substrate of piezoelectric material in such a manner that the phase change between adjacent electrodes is pi radians for a predetermined dispersion characteristic. Fresnel ripple reduction is also provided by additional sets of electrodes with wider and narrower spacing at the low and high frequency ends, respectively, of the transducers.
摘要翻译： 公开了具有不带变迹的具有加权转换损耗与频率特性的换能器的声表面波器件，其中等重叠的叉指电极以这样的方式设置在压电材料的衬底上，使得相邻电极之间的相位变化是用于预定色散特性的pi弧度 。 还可以通过分别在换能器的低频和高频端分别具有更宽和更窄间距的附加电极来提供菲涅尔波纹减小。
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公开(公告)号：US3832655A
公开(公告)日：1974-08-27
申请号：US34811473
申请日：1973-04-05
申请人： MITSUMI ELECTRIC CO
发明人： YOKOYAMA T
CPC分类号： H03H9/36
摘要： An ultrasonic delay line which comprises a solid body and two input and output electro-mechanical transducers for converting electrical energy into ultrasonic mechanical energy or vice versa, and in which the ultrasonic wave, emitted from the input electro-mechanical transducer by the application of an electric input signal thereto, is reflected by at least one reflecting surface formed in the solid body and enters the output electromechanical transducer to derive therefrom an electric output signal which is delayed behind the electric input signal for a period of time during which the ultrasonic wave propagates in the solid body. The reflecting surface has at least one elliptical surface whose focuses are located each at one point on each electro-mechanical transducer or its equivalent point.
摘要翻译： 一种超声波延迟线，其包括固体和用于将电能转换成超声机械能的两个输入和输出电 - 机械换能器，反之亦然，其中通过应用输入机电换能器发射的超声波 电输入信号由形成在固体中的至少一个反射表面反射并进入输出机电换能器，从而导出延迟电输入信号后的电输出信号一段时间，在此期间超声波 波在固体中传播。 反射表面具有至少一个椭圆表面，其焦点位于每个机电换能器或其等效点上的一个点处。
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公开(公告)号：US3816710A
公开(公告)日：1974-06-11
申请号：US18208371
申请日：1971-09-20
申请人： SIEMENS AG
CPC分类号： G06K7/042
摘要： A device is used for changing into electrical signals indicia applied to an information carrier in the shape of nonlevel markings, such as holes, notches and the like. The device is particularly characterized by a piezoelectric converter connected with feeling means which are resiliently pressed against the inscribed lengths of the information carrier, as well as a transporting device for shifting the information carrier relatively to the feeling means in the direction of the inscribed lengths.
摘要翻译： 一种装置用于改变为以诸如孔，凹口等的非标记形状施加到信息载体上的电信号标记。 该装置的特征在于具有与弹性按压信息载体的内接长度的感觉装置连接的压电转换器，以及用于使信息载体相对于内接长度方向的感觉装置移动的传送装置。
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