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公开(公告)号：US4496914A
公开(公告)日：1985-01-29
申请号：US321281
申请日：1981-11-13
Applicant: Bernhard H. Andresen , Stephen R. Schenck , Nathan R. Kennedy
Inventor： Bernhard H. Andresen , Stephen R. Schenck , Nathan R. Kennedy
CPC classification number: H03B5/36 , B06B1/0238 , B06B2201/55 , H03B2200/002
Abstract: A circuit is disclosed for driving a piezo ceramic device as used in smoke alarms or other audio warning devices. The circuit detects the resonant frequency of the piezo horn and provides an alternating current at the resonant frequency of the horn for maximum sound output. The circuit has a self starting resonant oscillation characteristic. Two pairs of switches act in concert to alternatingly connect each side of the piezo horn to the supply voltage and ground, causing the maximum voltage swing across the piezo horn to be effectively twice the available power supply voltage.
Abstract translation: 公开了用于驱动用于烟雾警报器或其他音频警告装置中的压电陶瓷装置的电路。 该电路检测压电喇叭的谐振频率，并以喇叭的谐振频率提供交流电，以获得最大的声音输出。 该电路具有自启动谐振振荡特性。 两对开关协同工作，将压电喇叭的每一侧交替连接到电源电压和接地，导致压电喇叭之间的最大电压摆幅实际上是可用电源电压的两倍。
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公开(公告)号：US4445064A
公开(公告)日：1984-04-24
申请号：US488374
申请日：1983-04-25
Applicant: David C. Bullis
Inventor： David C. Bullis
CPC classification number: B06B1/0253 , B06B2201/55
Abstract: A motional bridge circuit for generating feedback signals proportional to the vibration of an ultrasonic transducer is modified by means of an active filter in the feedback circuit which is coupled to a starting circuit that raises the Q of the active filter when a signal is not present in the feedback loop to change the active filter from a mode suppressant to a self-oscillating state.
Abstract translation: 用于产生与超声波换能器的振动成比例的反馈信号的运动桥接电路通过反馈电路中的有源滤波器来修改，该有源滤波器耦合到启动电路，当不存在信号时，启动电路会提高有源滤波器的Q 反馈回路将有源滤波器从模式抑制器改变为自振荡状态。
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公开(公告)号：US4271371A
公开(公告)日：1981-06-02
申请号：US79206
申请日：1979-09-26
Applicant: Shuhei Furuichi , Takahiko Nose
Inventor： Shuhei Furuichi , Takahiko Nose
CPC classification number: B06B1/0253 , B06B2201/40 , B06B2201/55
Abstract: A driving circuit for ultrasonic tools which uses a piezoelectric transducer to convert ultrasonic electric signals into ultrasonic mechanical vibrations including a voltage-controlled oscillator which produces an output signal at a frequency that is proportional to an input voltage, a power amplifier stage having its input coupled to the output of the voltage-controlled oscillator, the power amplifier stage including an output transformer which couples the output of the power amplifier stage to the piezoelectric transducer, the power output transformer further acting as both an insulating transformer and a boosting transformer for the driving circuit and a feedback transformer coupled in series with the secondary side of the output transformer and the piezoelectric transducer, the feedback transformer having a secondary side through which a current flows which is proportional to the current flowing through the piezoelectric transducer, a phase comparitor which detects the phase difference between two signals applied to two inputs of the phase comparitor, the two inputs being respectively coupled to the output signal of the voltage controlling oscillator and the secondary side of the feedback transformer and a low pass filter which blocks high frequency components to pass therethrough connected between an output of the phase comparitor and the input of the voltage controlled oscillator.
Abstract translation: 一种用于超声波工具的驱动电路，其使用压电换能器将超声波电信号转换成超声机械振动，包括以与输入电压成比例的频率产生输出信号的压控振荡器，功率放大器级的输入耦合 对于压控振荡器的输出，功率放大器级包括将功率放大器级的输出耦合到压电换能器的输出变压器，功率输出变压器进一步充当用于驱动的绝缘变压器和升压变压器 电路和与输出变压器和压电换能器的次级侧串联耦合的反馈变压器，反馈变压器具有次级侧，电流与流过压电换能器的电流成比例流动;相位比较器，其检测 相位不同 两个输入分别耦合到电压控制振荡器和反馈变压器的次级侧的输出信号，以及阻塞高频分量通过的低通滤波器连接到相位比较器的两个输入端 在相位比较器的输出和压控振荡器的输入之间。
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公开(公告)号：US4232241A
公开(公告)日：1980-11-04
申请号：US909309
申请日：1978-05-24
Applicant: Mitsuhiro Hamatani
Inventor： Mitsuhiro Hamatani
CPC classification number: G04G13/021 , B06B1/0215 , H04R17/10 , B06B2201/55
Abstract: A diode and a coil are connected in series to the output side of a driving circuit switched ON and OFF upon receipt of a pulse signal and a piezoelectric vibrator is connected in parallel with the series-connected diode and coil. The piezoelectric vibrator is driven by a reverse induced voltage produced in the coil when the driving circuit is switched OFF so as to apply more electric energy for driving the piezoelectric vibrator than would be the case if the diode were omitted.
Abstract translation: 二极管和线圈与接收到脉冲信号的ON和OFF的驱动电路的输出侧串联连接，并且压电振子与串联的二极管和线圈并联连接。 当驱动电路断开时，压电振动器由线圈产生的反向感应电压驱动，以便比省略二极管的情况下施加更多的电能来驱动压电振动器。
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公开(公告)号：US4109174A
公开(公告)日：1978-08-22
申请号：US765645
申请日：1977-02-04
Applicant: Duncan Barry Hodgson
Inventor： Duncan Barry Hodgson
CPC classification number: H01L41/042 , B06B1/0246 , B06B2201/55
Abstract: A drive circuit for a piezo-electric crystal stack comprises an inductor, a first circuit including a diode and a transistor through which the inductor can be connected to a pair of d.c. supply terminals, the first circuit including a switch operable to reduce the current flow through the inductor, a second curcuit including a diode through which energy from the inductor is transferred to the stack of crystals when the current flow through the inductor is reduced. The drive circuit also includes means for transferring energy from the stack of crystals to the inductor when it is required to increase current flow in the inductor.
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Patent Agency Ranking
公开(公告)号：US4085893A
公开(公告)日：1978-04-25
申请号：US720431
申请日：1976-09-03
Applicant: Benton A. Durley, III
Inventor： Benton A. Durley, III
CPC classification number: B06B1/0618 , B05B17/0623 , F02M27/08 , F23D11/34 , F24F6/12 , B06B2201/55 , B06B2201/77 , F24F2006/125 , Y02B30/80 , Y10S261/48
Abstract: Devices are disclosed using ultrasonic vibratory energy for atomizing water, gasoline or other liquids, for use in humidifiers, carburetors, and the like. A humidifier or atomizer is disclosed comprising an ultrasonic transducer having a vibratory member, together with means for producing ultrasonic vibrations thereof, a liquid supply conduit for directing a liquid into contact with the vibratory member, and a collection receptacle disposed below the vibratory member for collecting the liquid when the ultrasonic transducer is not in operation. The ultrasonic transducer may comprise an elongated front end mass, an elongated tail mass, a pair of piezoelectric elements disposed between such masses, an electrode plate disposed between the piezoelectric elements, means for clamping such masses together, with the piezoelectric elements and the electrode plate therebetween, and a mounting member having an opening therein slidably receiving the piezoelectric elements and portions of such masses, the mounting member having an internal peripheral slot within such opening for slidably receiving the electrode plate. The opening and the slot having a sufficiently loose fit with the piezoelectric elements, the masses and the electrode plate to obviate any substantial damping of ultrasonic vibrations. The transducer may be driven by a circuit comprising a solid state amplifier having input and output connections, a driver transformer having a primary winding connected to such output connection and a secondary winding connected to the electrodes of the piezoelectric transducer, a feedback transformer having a secondary winding connected to such input connection of the amplifier, and a primary winding connected to such electrodes through a phase shifting circuit.
Abstract translation: 公开了使用超声波振动能量来雾化水，汽油或其它液体的装置，用于加湿器，化油器等。 公开了一种加湿器或雾化器，其包括具有振动构件的超声换能器，以及用于产生超声波振动的装置，用于引导液体与振动构件接触的液体供应管道，以及设置在振动构件下方的收集容器，用于收集 超声波换能器不工作时的液体。 超声波换能器可以包括细长的前端质量块，细长的尾料块，设置在这种质量块之间的一对压电元件，设置在压电元件之间的电极板，用于将这种质量夹在一起的装置与压电元件和电极板 以及具有开口的安装构件，其可滑动地容纳压电元件和这些质量的部分，该安装构件在该开口内具有可滑动地容纳电极板的内周槽。 开口和槽与压电元件，质量块和电极板具有足够松散的配合，以消除超声振动的任何实质阻尼。 传感器可以由包括具有输入和输出连接的固态放大器的电路驱动，具有连接到这种输出连接的初级绕组的驱动器变压器和连接到压电换能器的电极的次级绕组，具有次级 连接到放大器的这种输入连接的绕组，以及通过相移电路连接到这种电极的初级绕组。
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公开(公告)号：US3879699A
公开(公告)日：1975-04-22
申请号：US35451873
申请日：1973-04-26
Applicant: EDO CORP
Inventor： PEPPER PERRY ARNOLD
CPC classification number: B06B1/0215 , B06B1/0611 , B06B2201/55
Abstract: In apparatus for producing a unipolar displacement of the radiating face of an electroacoustic transducer to generate unipolar acoustic pulses in an acoustic medium, the transducer dimension perpendicular to the radiating face of the transducer is chosen to simplify the response of the transducer, thereby simplifying the required transducer driving signals and the apparatus required to generate those signals.
Abstract translation: 在用于产生电声换能器的辐射面的单极位移以在声学介质中产生单极声学脉冲的装置中，选择垂直于换能器的辐射面的换能器尺寸，以简化换能器的响应，从而简化所需的 换能器驱动信号和产生这些信号所需的装置。
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公开(公告)号：US3743868A
公开(公告)日：1973-07-03
申请号：US3743868D
申请日：1971-10-12
Applicant: DENKI ONKYO CO LTD
Inventor： KAWADA T
IPC: B06B1/02 , H01L41/04 , H02M7/5383 , H04R17/00
CPC classification number: B06B1/0261 , B06B2201/55 , H01L41/044 , H02M7/5383
Abstract: In apparatus for driving a piezoelectric ceramic element by applying a driving voltage across a pair of driving electrodes of the ceramic element, there are provided a phase detector connected to one driving electrode for detecting the phase of the current flowing through the ceramic element as a voltage phase, an amplifier connected to the other driving electrode for supplying thereto a driving voltage, and a phase shifter to positively feed back the output from the phase detector to the amplifier for coinciding the voltage phase and the current phase of the ceramic element so as to drive the same at the most suitable driving frequency.
Abstract translation: 在通过在陶瓷元件的一对驱动电极上施加驱动电压来驱动压电陶瓷元件的装置中，设置有相位检测器，连接到一个驱动电极，用于检测流过陶瓷元件的电流的相位作为电压 连接到另一驱动电极的放大器，用于向其提供驱动电压;以及移相器，用于将相位检测器的输出正向反馈到放大器，以使电压相位和陶瓷元件的电流相位相一致，以便 以最合适的驾驶频率驱动相同。
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119.发明授权
公开(公告)号：US3668486A
公开(公告)日：1972-06-06
申请号：US3668486D
申请日：1971-01-08
Applicant: CREST ULTRASONICS CORP
Inventor： SILVER JOSEPH
CPC classification number: B06B1/0261 , B06B2201/55
Abstract: An oscillatory circuit, operating in the ultrasonic or high sonic frequencies, generates power for a piezo-electric transducer in proportion to mechanical resistances or loadings encountered by the transducer. High sensitivity and instantaneous power adjustment to a wide variety of loads is obtained, and instant ''''turn-on'''' and ''''turn-off'''' at the adjusted power settings are secured, by a circuit in which the input to the first stage of a two-stage oscillatory circuit comprises the sum of three feedback components plus a DC forward bias.
Abstract translation: 在超声波或高声波频率下工作的振荡电路与传感器遇到的机械阻抗或负载成比例地产生压电换能器的电力。 获得对各种负载的高灵敏度和瞬时功率调整，并且通过其中输入到二级的第一级的电路确保在调整的功率设置下的即时“开启”和“关闭” 阶梯振荡电路包括三个反馈分量加上一个直流正向偏置的总和。
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公开(公告)号：US3651352A
公开(公告)日：1972-03-21
申请号：US3651352D
申请日：1970-12-10
Applicant: BRANSON INSTR
Inventor： PUSKAS WILLIAM L
CPC classification number: B08B3/12 , B06B1/0253 , B06B2201/55 , B06B2201/71
Abstract: A high-efficient oscillatory circuit drives a piezoelectric crystal (transducer) which is coupled to an ultrasonic cleaning tank. The circuit includes a transistor switching means in the driver side of the oscillator. The primary winding of the transformer is coupled in parallel with a capacitor and forms a circuit having a resonant frequency which is a multiple even integer of the resonant frequency of the crystal which is coupled to the transformer secondary winding.
Abstract translation: 高效振荡电路驱动耦合到超声波清洗槽的压电晶体（换能器）。 该电路包括在振荡器的驱动器侧的晶体管开关装置。 变压器的初级绕组与电容器并联并形成具有谐振频率的电路，谐振频率是耦合到变压器次级绕组的晶体的谐振频率的多偶数整数。
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