公开(公告)号：US20100277237A1

公开(公告)日：2010-11-04

申请号：US12693884

申请日：2010-01-26

Applicant: Rajarishi Sinha ,  L. Richard Carley

Inventor： Rajarishi Sinha ,  L. Richard Carley

IPC: H03F1/00

CPC classification number: H03F3/211 ,  H01L41/044 ,  H01L41/107 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45475 ,  H03F2203/21145 ,  H03F2203/45138

Abstract: A switchable power combiner is disclosed. The switchable power combiner has an output section that is a signal source connected to a transformer section. The transformer section has one or more primaries and a common secondary. The transformer primaries and secondary are acoustically coupled. The primaries or/and the secondary are made of switchable piezoelectric material, such that the acoustic coupling between any primary and the secondary can be switched on or off by electrical control, thereby implementing a switchable power combiner. The transformer secondary is connected to an antenna port. The power amplifier output section is segmented and connected to the transformer primaries. The power amplifier output section has a plurality of power amplifiers and a plurality of reactance elements, either fixed or variable. The switchable power combiner generates different linear load lines by switching on and off the coupling between any primary and the secondary.

Abstract translation: 公开了一种可切换的功率组合器。 可切换功率组合器具有作为连接到变压器部分的信号源的输出部分。 变压器部分具有一个或多个初级和一个共同的次级。 变压器初级和次级是声学耦合的。 原色或/和次级由可切换的压电材料制成，使得可以通过电气控制来打开或关闭任何初级和次级之间的声学​​耦合，从而实现可切换的功率组合器。 变压器次级连接到天线端口。 功率放大器输出部分被分段并连接到变压器原色。 功率放大器输出部分具有多个功率放大器和多个固定或可变的电抗元件。 可切换功率组合器通过接通和断开任何主和次级之间的耦合来生成不同的线性负载线。

公开(公告)号：US07425789B2

公开(公告)日：2008-09-16

申请号：US11275636

申请日：2006-01-20

Applicant: Kouji Yasukawa ,  Hiroshi Mano ,  Atsuhiko Yamaguchi ,  Osamu Nagasaki

Inventor： Kouji Yasukawa ,  Hiroshi Mano ,  Atsuhiko Yamaguchi ,  Osamu Nagasaki

IPC: H01L41/107

CPC classification number: H01L41/044 ,  G03G15/80

Abstract: A power supply apparatus includes a piezoelectric transformer which outputs a voltage, a voltage-controlled oscillator which controls the frequency of an output signal in accordance with an input control signal, a power supply voltage supply element which is driven by a signal output from the voltage-controlled oscillator and applies a power supply voltage to the piezoelectric transformer, and an output voltage stop circuit (118) which outputs a signal for stopping driving the piezoelectric transformer on the basis of a control signal (Vcont).

Abstract translation: 电源装置包括输出电压的压电变压器，根据输入控制信号控制输出信号的频率的压控振荡器，由从电压输出的信号驱动的电源电压供给元件 控制振荡器，并向压电变压器施加电源电压;以及输出电压停止电路（118），其基于控制信号（Vcont）输出用于停止驱动压电变压器的信号。

公开(公告)号：US20080136289A1

公开(公告)日：2008-06-12

申请号：US11884528

申请日：2006-02-20

Applicant: Akira Mizutani ,  Minoru Yamada

Inventor： Akira Mizutani ,  Minoru Yamada

IPC: H01L41/08 ,  H05B41/24

CPC classification number: H01L41/044 ,  H05B41/2822

Abstract: [Problem]A driving circuit of a piezoelectric transformer capable of placing insulation between a primary side and secondary side of each of piezoelectric transformers is provided[Means for solving]In the driving circuit of piezoelectric transformers including piezoelectric transformers 11 to output a specified voltage to cold cathode fluorescent lamps 12, a driving section 50 to apply a voltage V used to drive the piezoelectric transformers 11, a frequency controlling section 51 to control the driving section 50, and a phase detecting section 52 to transmit a detecting signal to the frequency controlling section 51, primary sides of every two out of the piezoelectric transformers 11 are serially connected to one another, making up one pair of piezoelectric transformers 11 and every three pairs of said piezoelectric transformers 11 is connected in parallel to the driving unit and one end portion of each of the cold cathode fluorescent lamps 12 with a same plurality of numbers as for the piezoelectric transformers 11 is connected to each of secondary sides of the piezoelectric transformers 11 and facing end portions each being placed in another end portion of each of the cold cathode fluorescent lamp 12 are separated into two groups, each group being connected to one another and, as a result, currents output from the above piezoelectric transformers are cancelled out, which makes grounding unnecessary. Therefore, it is possible to provide insulation between the primary side and secondary side of each of the piezoelectric transformers 11.

Abstract translation: [问题]提供了一种能够在压电变压器的初级侧和次级侧之间设置绝缘的压电变压器的驱动电路[解决方案]在包括压电变压器11的压电变压器的驱动电路中，输出规定的电压 冷阴极荧光灯12，施加用于驱动压电变压器11的电压V的驱动部分50，控制驱动部分50的频率控制部分51和相位检测部分52，以将检测信号传送到频率控制 部分51中，压电变压器11中的每两个的初级侧彼此串联连接，构成一对压电变压器11，并且每三对压电变压器11并联连接到驱动单元，一端部 每个冷阴极荧光灯12具有相同的数量 压电变压器11连接到压电变压器11的各个次级侧，并将各自放置在冷阴极荧光灯12的另一个端部的端部分别分成两组，各组彼此连接 结果，从上述压电变压器输出的电流被抵消，这使得不需要接地。 因此，可以在每个压电变压器11的一次侧和次级侧之间提供绝缘。

公开(公告)号：US20080048524A1

公开(公告)日：2008-02-28

申请号：US11508210

申请日：2006-08-23

Applicant: Chin-Wen Chou ,  Ying-Nan Cheng

Inventor： Chin-Wen Chou ,  Ying-Nan Cheng

IPC: H01L41/107

CPC classification number: H01L41/044

Abstract: A piezoelectric power supply includes a power supply unit to provide DC intermediate voltage power output to drive a high voltage output unit of a first load through a first piezoelectric plate and a low voltage output unit of a second load through a second piezoelectric plate. Thereby the power supply can provide a low voltage secondary power output to reduce cost and improve power output flexibility and efficiency. It can be used on display devices such as gas discharge lamps, and also provide additional low voltage secondary power for peripheral devices such as speakers, lamps, ear sets, USB connection ports and the like.

Abstract translation: 压电电源包括：电源单元，用于提供直流中压电力输出，以通过第一压电板驱动第一负载的高电压输出单元;通过第二压电板驱动第二负载的低电压输出单元。 因此，电源可以提供低电压次级功率输出以降低成本并提高功率输出的灵活性和效率。 它可以用在诸如气体放电灯的显示装置上，并且还为诸如扬声器，灯，耳机，USB连接端口等的外围设备提供额外的低电压次级电力。

公开(公告)号：US20070200455A1

公开(公告)日：2007-08-30

申请号：US11677397

申请日：2007-02-21

Applicant: ATSUHIKO YAMAGUCHI

Inventor： ATSUHIKO YAMAGUCHI

IPC: H01L41/107

CPC classification number: H01L41/044 ,  G03G15/5004 ,  H01L41/107 ,  H02M1/44 ,  H02M3/28 ,  H02M2001/008

Abstract: A power supply apparatus with a plurality of power supply circuits each having a piezoelectric transformer and a voltage-controlled oscillator which generates a signal at an operating frequency used to drive the piezoelectric transformer in accordance with a control signal, includes a frequency-dividing circuit which divides the operating frequency generated by a voltage-controlled oscillator in at least one power supply circuit, and outputs a signal at a driving frequency to drive a piezoelectric transformer in the one power supply circuit. When at least one power supply circuit and remaining power supply circuits output voltages, the operating frequency generated by the voltage-controlled oscillator in the one power supply circuit is controlled to be higher than the driving frequency.

Abstract translation: 一种电源装置，具有多个电源电路，每个电源电路具有压电变压器和压控振荡器，该电压控制振荡器根据控制信号产生用于驱动压电变压器的工作频率的信号，包括分频电路， 在至少一个电源电路中分压由压控振荡器产生的工作频率，并以驱动频率输出驱动一个电源电路中的压电变压器的信号。 当至少一个电源电路和剩余电源电路输出电压时，由一个电源电路中的压控振荡器产生的工作频率被控制为高于驱动频率。

公开(公告)号：US07202592B2

公开(公告)日：2007-04-10

申请号：US10843015

申请日：2004-05-11

Applicant: Katsu Takeda ,  Hiroshi Nakatsuka

Inventor： Katsu Takeda ,  Hiroshi Nakatsuka

IPC: H02N1/04

CPC classification number: H05B41/2822 ,  H01L41/044 ,  H01L41/107

Abstract: A piezoelectric transformer includes a piezoelectric ceramic disc having one face and the other face opposite to each other in a thickness direction. A pair of low-impedance portions acting as one of a driving portion and a generator portion are disposed in the piezoelectric ceramic disc symmetrically with respect to a central axis of the piezoelectric ceramic disc, while a pair of high-impedance portions acting as the other of the driving portion and the generator portion are disposed in the piezoelectric ceramic disc symmetrically with respect to the central axis so as to be electrically separated from the low-impedance portions such that the piezoelectric transformer is driven in a radial extensional vibration mode of the piezoelectric ceramic disc.

Abstract translation: 压电变压器包括压电陶瓷盘，其具有一个面，另一个面在厚度方向上彼此相对。 作为驱动部和发电机部之一的一对低阻抗部分相对于压电陶瓷盘的中心轴对称设置在压电陶瓷盘中，而一对作为另一个的高阻抗部 驱动部分和发电机部分相对于中心轴对称地设置在压电陶瓷盘中，以便与低阻抗部分电隔离，使得压电变压器以压电变压器的径向延伸振动模式驱动 陶瓷盘。

公开(公告)号：US07145281B2

公开(公告)日：2006-12-05

申请号：US11217004

申请日：2005-08-31

Applicant: Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki

Inventor： Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki

IPC: H01L41/107

CPC classification number: H05B41/2822 ,  H01L41/044 ,  H05B41/2855 ,  H05B41/392

Abstract: A driving circuit for a piezoelectric transformer is provided, which ensures lighting of all the cold-cathode tubes connected to the piezoelectric transformer, and reduces the difference in brightness between the cathode tubes during steady lighting, thereby enhancing reliability and performance. A plurality of cold-cathode tubes connected to a secondary side of the piezoelectric transformer, and a cold-cathode tube output detector circuit connected in series to a plurality of cold-cathode tubes, for detecting an output state of the respective cold-cathode tubes are provided, and the driving of the piezoelectric transformer is controlled based on a detection signal from the cold-cathode tube output detector circuit. Because of this, the piezoelectric transformer performs the same operation as that with respect to one cold-cathode tube.

公开(公告)号：US20050206273A1

公开(公告)日：2005-09-22

申请号：US11081761

申请日：2005-03-16

Applicant: Kinya Takama

Inventor： Kinya Takama

IPC: H01L41/04 ,  H01L41/107 ,  H02M3/24 ,  H02M7/48 ,  H05B41/282

CPC classification number: H05B41/2827 ,  H01L41/044

Abstract: A piezoelectric transformer drive circuit of a full-bridge type having high efficiency minimizes the effect of voltage fluctuation of an input voltage VCC. The piezoelectric transformer drive circuit includes transistors that drive primary electrodes of a piezoelectric transformer, an inductor, a tube current detection circuit, a first error amplifier, a voltage controlled oscillator that outputs an oscillation clock and a triangular wave signal, an applied difference voltage generating circuit that outputs the difference between the voltages of the primary electrodes, an applied voltage detection circuit, a second error amplifier, a PWM comparator that compares this voltage with the triangular wave signal and outputs a PWM signal, a frequency divider that frequency-divides the oscillation clock, an AND circuit that controls the transistors by computing the AND of the output signal thereof and the PWM signal, and an AND circuit that controls the transistors by computing the AND of an inverted signal of the output signal of frequency divider and the PWM signal.

Abstract translation: 具有高效率的全桥型压电变压器驱动电路使输入电压V CC的电压波动的影响最小化。 压电变压器驱动电路包括驱动压电变压器的主电极的晶体管，电感器，管电流检测电路，第一误差放大器，输出振荡时钟的压控振荡器和三角波信号，施加的差分电压产生 输出初级电极的电压之间的差异，施加电压检测电路，第二误差放大器，将该电压与三角波信号进行比较的PWM比较器，输出PWM信号;频率分频器， 振荡时钟，AND电路，通过计算其输出信号和PWM信号的AND来控制晶体管; AND电路，通过计算分频器和PWM的输出信号的反相信号的AND来控制晶体管 信号。

公开(公告)号：US06791239B2

公开(公告)日：2004-09-14

申请号：US10298688

申请日：2002-11-19

Applicant: Chin-Wen Chou ,  Eddie Cheng

Inventor： Chin-Wen Chou ,  Eddie Cheng

IPC: H01L41107

CPC classification number: H05B41/2822 ,  H01L41/044

Abstract: A piezoelectric transformation driving apparatus for driving elements or products to be driven by a high or a low voltage includes a pulse-width modulation (PWM) control unit, a plurality of driving units, a plurality of transformation units, a plurality of piezoelectric units, and a plurality of loads. The PWM control unit outputs signals of the same phase and frequency to drive synchronously the driving units, the transformation units, the piezoelectric units and the loads to operate synchronously.

Abstract translation: 用于驱动由高电压或低电压驱动的元件或产品的压电变换驱动装置包括脉冲宽度调制（PWM）控制单元，多个驱动单元，多个变换单元，多个压电单元， 和多个负载。 PWM控制单元输出相同相位和相位相同的信号，驱动单元，变换单元，压电单元和负载同步运行。

公开(公告)号：US20040135555A1

公开(公告)日：2004-07-15

申请号：US10698052

申请日：2003-10-29

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Alberto Danioni ,  Giulio Ricotti

IPC: G05F001/10

CPC classification number: H01L41/044 ,  H02M3/156

Abstract: A driving device is provided for driving at least one power transistor of a voltage converter that includes a piezoelectric transformer. The power transistor has a first non-drivable terminal coupled to an input voltage and to the input of the piezoelectric transformer. The converter includes an inductor coupled between the input voltage and the piezoelectric transformer, and a resistor coupled between a second non-drivable terminal of the power transistor and ground. The driving device is coupled to the drivable terminal of the power transistor, to the input of the piezoelectric transformer, and to the second non-drivable terminal of the power transistor so as to detect a first voltage value and a second current value. The driving device is adapted to cause the turning on of the power transistor if the first voltage value is equal to a third prefixed voltage value, and to cause the turning off of the power transistor if the second current value is equal to a fourth prefixed current value.

Abstract translation: 驱动装置用于驱动包括压电变压器的电压转换器的至少一个功率晶体管。 功率晶体管具有耦合到输入电压和压电变压器的输入端的第一不可驱动端子。 转换器包括耦合在输入电压和压电变压器之间的电感器，以及耦合在功率晶体管的第二不可驱动端子和接地之间的电阻器。 驱动装置耦合到功率晶体管的可驱动端子，耦合到压电变压器的输入端和功率晶体管的第二不可驱动端子，以便检测第一电压值和第二电流值。 如果第一电压值等于第三预定电压值，则驱动装置适于使功率晶体管导通，并且如果第二电流值等于第四预定电流，则使功率晶体管截止 值。