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公开(公告)号：US5696871A
公开(公告)日：1997-12-09
申请号：US611052
申请日：1996-03-05
申请人： Michiaki Yama , Sachito Horiuchi
发明人： Michiaki Yama , Sachito Horiuchi
CPC分类号： H02P7/2855
摘要： A DC motor control circuit which contains a DC motor as a part of bridge resistance constituting a bridge circuit includes a first terminal connected to one end of the DC motor in the bridge circuit. A switching transistor is connected to the first terminal. A second terminal is connected to the other end of the DC motor. A switching control circuit detects an unbalanced condition of the bridge circuit via the second terminal and controls the switching period of the switching transistor so as to restore the bridge circuit to a predetermined unbalanced condition or balanced condition. A part of the bridge circuit, the switching transistor and the switching control circuit are integrated into an IC, thereby the number of terminals for the IC is reduced and a coil and an externally added capacitor both for smoothing are unnecessary.
摘要翻译： 包含作为构成桥接电路的桥电阻的一部分的直流电动机的直流电动机控制电路包括与桥式电路中的直流电动机的一端连接的第一端子。 开关晶体管连接到第一端子。 第二端子连接到直流电动机的另一端。 开关控制电路通过第二端子检测桥接电路的不平衡状态，并控制开关晶体管的开关周期，使桥接电路恢复到预定的不平衡状态或平衡状态。 桥接电路，开关晶体管和开关控制电路的一部分集成到IC中，因此IC的端子数量减少，并且不需要用于平滑的线圈和外部附加电容器。
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公开(公告)号：US06400211B1
公开(公告)日：2002-06-04
申请号：US09954036
申请日：2001-09-18
IPC分类号： G05F110
CPC分类号： H02M3/07 , H02M2003/072
摘要： A DC/DC converter is provided with a DC power source; a reference voltage generating circuit; an amplifier which receives an electric power from the DC power source and outputs an electric power of which voltage is controlled so as to assume a target voltage value by stepping down the voltage of the electric power from the DC power source depending on a difference between the reference voltage and a detection voltage; an oscillation circuit which generates signals having a specific frequency; a voltage boosting circuit which receives the output of the amplifier and the output of the oscillation circuit, causes switching of the output of the amplifier at the specific frequency to charge a first capacitor, and performs voltage boosting by transferring the electric charges-charged in the first capacitor through complementary ON/OFF switching with respect to the former switching into a second capacitor after raising substantially upto n/m time voltage (wherein n>m and n and m are integers equal to or more than 2) and charging the same therewith; and an output voltage detection circuit which generates the detection voltage depending on the output voltage of the boosting circuit, whereby a voltage of substantially n/m times of the target voltage value is generated from the voltage boosting circuit.
摘要翻译： DC / DC转换器配备有直流电源; 参考电压发生电路; 放大器，其从直流电源接收电力，并且通过根据所述直流电源的差异来降低来自所述直流电源的电力的电压来输出控制所述电压的电力，以便呈现目标电压值 参考电压和检测电压; 产生具有特定频率的信号的振荡电路; 接收放大器的输出和振荡电路的输出的升压电路使放大器的输出以特定频率切换，对第一电容器充电，并且通过在第 第一电容器通过互补的ON / OFF切换相对于前者在升高到大约n / m时间电压之后切换成第二电容器（其中n> m且n和m是等于或大于2的整数）并且与其充电 ; 以及输出电压检测电路，其根据升压电路的输出电压产生检测电压，由此从升压电路产生大致n / m倍的目标电压值的电压。
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3.发明授权
公开(公告)号：US5886475A
公开(公告)日：1999-03-23
申请号：US768463
申请日：1996-12-18
CPC分类号： H05B33/08 , Y02B20/325
摘要： In an EL element driving circuit, a fly back pulse generating circuit receives an electric power from a DC power source through a coil and generates fly back pulses by a switching circuit. The electric power of the fly back pulses is supplied to the EL element as a charging electric power and a current which flows from the DC power source to the coil by the switching operation of the switching circuit is controlled by an adjusting circuit which adjusts the ON period of the switching circuit within a period substantially corresponding to a period after the switching circuit is turned ON and until the current maximizes.
摘要翻译： 在EL元件驱动电路中，回扫脉冲发生电路通过线圈接收来自直流电源的电力，并通过开关电路产生回扫脉冲。 回扫脉冲的电力作为充电电力供给到EL元件，并且通过开关电路的开关动作从直流电源流向线圈的电流由调整电路来控制，该调整电路调节ON 在大致对应于开关电路接通之后的周期的时间内，直到电流最大化，开关电路的周期。
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4.发明申请公开(公告)号：US20120007636A1
公开(公告)日：2012-01-12
申请号：US13237133
申请日：2011-09-20
IPC分类号： H03K17/00
CPC分类号： H03K17/063
摘要： An analog signal is input to an input terminal. An analog signal is output via an output terminal. A first transistor is an N-channel MOSFET, and is provided between the input terminal and the output terminal. A first resistor is provided between the gate of the first transistor and a first fixed voltage terminal (power supply terminal), which sets the gate of the first transistor to a high-impedance state.
摘要翻译： 模拟信号输入到输入端。 模拟信号通过输出端输出。 第一晶体管是N沟道MOSFET，并且设置在输入端和输出端之间。 第一电阻器设置在第一晶体管的栅极和第一固定电压端子（电源端子）之间，其将第一晶体管的栅极设置为高阻抗状态。
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公开(公告)号：US20090108911A1
公开(公告)日：2009-04-30
申请号：US12261167
申请日：2008-10-30
IPC分类号： H03K17/687
CPC分类号： H03K17/063
摘要： An analog signal is input to an input terminal. An analog signal is output via an output terminal. A first transistor is an N-channel MOSFET, and is provided between the input terminal and the output terminal. A first resistor is provided between the gate of the first transistor and a first fixed voltage terminal (power supply terminal), which sets the gate of the first transistor to a high-impedance state.
摘要翻译： 模拟信号输入到输入端。 模拟信号通过输出端输出。 第一晶体管是N沟道MOSFET，并且设置在输入端和输出端之间。 第一电阻器设置在第一晶体管的栅极和第一固定电压端子（电源端子）之间，其将第一晶体管的栅极设置为高阻抗状态。
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6.发明授权Piezoelectric transformer driving circuit and cold cathode tube illuminating device using the same 失效压电变压器驱动电路和冷阴极管照明装置使用相同
公开(公告)号：US6025824A
公开(公告)日：2000-02-15
申请号：US989411
申请日：1997-12-12
CPC分类号： H05B41/2827
摘要： A piezo electric transformer driving circuit and a cold cathode tube illuminating device comprising a series circuit including a switch circuit, a coil and a switching transistor and being connected successively in the named order between a power source line and a ground; a piezo electric transformer of which primary side electrode is connected to a juncture of the coil and the switching transistor; and a drive halting circuit which geneates a first control signal for turning OFF the switching circuit and further generates a second control signal for halting a switching operation of the switching transistor after a predetermined period from the generation of the first control signal, wherein the predetermined period is at least one turned ON interval of the switching transistor and through the switching operation of the switching transistor a high voltage is generated at a secondary side of the piezo electric transformer.
摘要翻译： 一种压电变压器驱动电路和冷阴极管照明装置，包括：串联电路，包括开关电路，线圈和开关晶体管，并在电源线与地之间按顺序依次连接; 初级侧电极与线圈和开关晶体管的接合部连接的压电变压器; 以及驱动停止电路，其对第一控制信号进行归一化以使开关电路断开，并且还产生用于在从所述第一控制信号的产生开始的预定时段之后停止所述开关晶体管的开关操作的第二控制信号，其中所述预定周期 是开关晶体管的至少一个导通间隔，并且通过开关晶体管的开关操作，在压电变压器的次级侧产生高电压。
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公开(公告)号：US5808458A
公开(公告)日：1998-09-15
申请号：US942609
申请日：1997-10-02
摘要： In a regulated power supply circuit which includes a differential amplifier circuit and a current output circuit which receives the output from the differential amplifier circuit, wherein the current output circuit comprises a drive stage transistor which operates upon receipt of an output from the differential amplifier circuit at an input terminal thereof, a current output stage of a MOSFET which is driven by the drive stage transistor and a load resistor for the drive stage transistor connected to the output side thereof, and the load resistor and the drive stage transistor are provided between a power source line and a ground line and the MOSFET is driven by an output taken out via the load resistor.
摘要翻译： 在包括差分放大器电路和接收来自差分放大器电路的输出的电流输出电路的稳压电源电路中，其中电流输出电路包括驱动级晶体管，其在接收到差分放大器电路的输出时工作， 其输入端子，由驱动级晶体管驱动的MOSFET的电流输出级和连接到其输出侧的驱动级晶体管的负载电阻器，负载电阻器和驱动级晶体管设置在功率 源极线和接地线，MOSFET由通过负载电阻取出的输出驱动。
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公开(公告)号：US5770973A
公开(公告)日：1998-06-23
申请号：US712456
申请日：1996-09-11
IPC分类号： H01L23/42 , H01L21/822 , H01L23/495 , H01L25/04 , H01L25/18 , H01L27/04 , H03F1/30 , H03F3/183
CPC分类号： H01L23/49568 , H01L23/49575 , H01L2924/0002
摘要： A semiconductor device for amplifying audio signals of the present invention comprises a preamplifier chip for amplifying small signals representing audio signals; a power amplifier chip which receives and power-amplifies the amplified audio signals from the preamplifier chip and outputs the same ; and a frame where the preamplifier chip and the power amplifier chip are mounted and which includes a heat sink area connected to a terminal for heat radiation, wherein the heat sink area is located adjacent to an area in the frame where the power amplifier chip is mounted, and the preamplifier chip, the power amplifier chip and the frame are packaged together.
摘要翻译： 本发明的用于放大音频信号的半导体器件包括用于放大表示音频信号的小信号的前置放大器芯片; 功率放大器芯片，其从前置放大器芯片接收放大的音频信号并对其进行放大并输出; 以及安装前置放大器芯片和功率放大器芯片的框架，并且包括连接到用于散热的端子的散热器区域，其中散热器区域位于与安装功率放大器芯片的框架中的区域相邻的位置 ，前置放大器芯片，功率放大器芯片和框架封装在一起。
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公开(公告)号：US5565762A
公开(公告)日：1996-10-15
申请号：US449830
申请日：1995-05-24
摘要： A DC/DC converter and an audio device incorporating the same performs a switching operation of a transistor through a driving control merely by an oscillation circuit under a light load condition other than a switching control circuit which shows a low conversion efficiency under a light load condition, thereby the conversion efficiency therewith under a light load condition is improved.
摘要翻译： DC / DC转换器和包括该DC / DC转换器的音频装置在轻负载条件下的轻负载条件下仅通过振荡电路通过驱动控制来执行晶体管的切换操作，该开关控制电路在轻负载条件下显示低的转换效率 从而提高了轻负载条件下的转换效率。
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10.发明授权Light emitting element drive device and electronic device having light emitting element 有权发光元件驱动装置和具有发光元件的电子装置公开(公告)号：US06822403B2
公开(公告)日：2004-11-23
申请号：US10482430
申请日：2003-12-29
申请人： Sachito Horiuchi , Ken Hoshino , Isao Yamamoto
发明人： Sachito Horiuchi , Ken Hoshino , Isao Yamamoto
IPC分类号： H05B3700
CPC分类号： H05B33/0815 , G09G3/30 , H05B33/0827 , H05B33/0851
摘要： An electronic apparatus is equipped with light emitting elements (21-26) such as LEDs. The light emitting elements are driven by a power supply circuit of the drive device (10) at a high step-up voltage (Vh). The drive device (10) has a multiplicity of constant-current drivers (12-14), a selection circuit (18), and a control circuit (11). The drivers are turned ON or OFF in accordance with respective instruction signals (S1-S3) supplied thereto to provide associated series with currents to activate the series for emission of light when associated drivers are turned ON. The selection circuit (18) selects the lowest one of the voltages impressed on the drivers and outputs the selected lowest voltage as a detection voltage. The control circuit (11) automatically controls the voltage Vh so as to equilibrate the detection voltage with a low reference voltage at which the drivers can perform required constant-current operations. Thus, the drive device can fully activate the light emitting elements for emission of light while suppressing energy loss in the drivers.
摘要翻译： 电子设备配备有诸如LED的发光元件（21-26）。 发光元件由驱动装置（10）的电源电路以高升压电压（Vh）驱动。 驱动装置（10）具有多个恒流驱动器（12-14），选择电路（18）和控制电路（11）。 根据提供给其的相应指令信号（S1-S3），驱动器被接通或关闭，以提供相关联的串联电流，以在相关联的驱动器被接通时激活用于发光的串联。 选择电路（18）选择施加在驱动器上的最低电压，并输出所选择的最低电压作为检测电压。 控制电路（11）自动控制电压Vh，以使驱动器可执行所需恒流操作的低参考电压平衡检测电压。 因此，驱动装置可以在抑制驱动器中的能量损失的同时完全启动用于发光的发光元件。
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