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63 条记录 (耗时 0.014 秒)

    Coil load driving circuit and optical disc device
    1.
    发明授权
    Coil load driving circuit and optical disc device 有权
    线圈负载驱动电路和光盘装置

    公开(公告)号：US07630616B2

    公开(公告)日：2009-12-08

    申请号：US11569638

    申请日：2005-05-26

    申请人： Toshiro Okubo

    发明人： Toshiro Okubo

    IPC分类号： H02P7/29

    CPC分类号： H02P7/29 ,  G11B7/093 ,  H03K7/08 ,  H03K17/162 ,  H03K17/663 ,  H03K17/6872

    摘要： A coil load driving circuit in which generation of radiation noise when a motor is stationary is minimized, includes output buffers that output a PWM pulse to both terminals of a motor; a transfer voltage generating circuit that outputs transfer voltages VTR1, VTR2 proportional to the difference between an input control voltage VIN and input reference voltage VREF; PWM comparators that output PWM signals PW1, PW2 corresponding to the transfer voltages VTR1, VTR2; and an output PWM pulse synthesis circuit that controls the output buffer in accordance with an AND signal of the PWM signal PW1 and an exclusive OR signal EX of the PWM signals PW1 and PW2, and controls the output buffer in accordance with an AND signal of the PWM signal PW2 and the exclusive OR signal EX.

    摘要翻译： 一种线圈负载驱动电路，其中当电动机静止时产生辐射噪声最小化，包括输出缓冲器，其将PWM脉冲输出到电动机的两端; 输出与输入控制电压VIN和输入基准电压VREF之间的差成比例的转移电压VTR1，VTR2的转移电压发生电路; 输出对应于转移电压VTR1，VTR2的PWM信号PW1，PW2的PWM比较器; 以及输出PWM脉冲合成电路，其根据PWM信号PW1的AND信号和PWM信号PW1，PW2的异或信号EX来控制输出缓冲器，并根据输出缓冲器的AND信号 PWM信号PW2和异或信号EX。

    Method and apparatus for driving capacitive element
    2.
    发明授权
    Method and apparatus for driving capacitive element 有权
    用于驱动电容元件的方法和装置

    公开(公告)号：US06841920B2

    公开(公告)日：2005-01-11

    申请号：US09951196

    申请日：2001-09-13

    申请人： Jun Takamura ,  Noboru Nitta ,  Shunichi Ono

    发明人： Jun Takamura ,  Noboru Nitta ,  Shunichi Ono

    IPC分类号： B41J2/045 ,  B41J2/055 ,  G02F1/133 ,  G09G3/18 ,  G09G3/20 ,  G09G3/36 ,  H01L41/04 ,  H01L41/09 ,  H03K17/10 ,  H03K17/16 ,  H03K17/66 ,  H03K17/687 ,  H03K19/0175

    CPC分类号： H03K17/16 ,  B41J2/04541 ,  B41J2/04581 ,  H01L41/042 ,  H03K17/163 ,  H03K17/663 ,  H03K17/6872

    摘要： A method and apparatus for driving a capacitive element are provided wherein: (i) when charging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is charged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance; and (ii) when discharging the capacitive element by driving and controlling both electrodes of the capacitive element, the capacitive element is discharged by setting one of the driving circuits for varying one of the electrode potentials first at a high impedance and then at a low impedance.

    摘要翻译： 提供一种用于驱动电容元件的方法和装置，其中：（i）当通过驱动和控制电容元件的两个电极对电容元件进行充电时，通过设置驱动电路中的一个来改变电极元件之一来对电容元件进行充电 首先是高阻抗，然后是低阻抗; 和（ii）当通过驱动和控制电容元件的两个电极来放电电容元件时，电容元件通过设置驱动电路之一来放电，用于首先以高阻抗改变一个电极电位然后以低阻抗 。

    Inductive load driving method and H-bridge circuit control device
    3.
    发明授权
    Inductive load driving method and H-bridge circuit control device 失效
    感应负载驱动方法和H桥电路控制装置

    公开(公告)号：US5952856A

    公开(公告)日：1999-09-14

    申请号：US841384

    申请日：1997-04-30

    申请人： Kenji Horiguchi ,  Tomoaki Nishi ,  Shin Nakajima

    发明人： Kenji Horiguchi ,  Tomoaki Nishi ,  Shin Nakajima

    IPC分类号： H03K17/16 ,  H03K17/66 ,  H03K19/0175 ,  H02P1/22

    CPC分类号： H03K17/16 ,  H03K17/663

    摘要： A current detecting resistor is inserted in an H-bridge circuit constructed to cause the flow of a current to an inductive load in both forward and reverse directions by four semiconductor switching elements and flywheel diodes respectively connected in reverse parallel to the semiconductor switching elements. An inductive load driving method and an H-bridge circuit control device prevent an erroneous operation caused by noise generated at the current detecting resistor. When a current flowing through the inductive load is controlled by a detection voltage generated by the current detecting resistor, the value of the detection voltage is ignored immediately after the connection of the inductive load to a power source. There is no risk that an erroneous operation is caused by a rush current and/or a through current. When a power source regeneration is made to decrease a switching current, the inductive load is connected to the power source at a predetermined period and a current flowing at that time is detected as the detection voltage. There is no risk that the current becomes too small or the transfer to a steady is made while the current is large.

    摘要翻译： 电流检测电阻器被插入到H桥电路中，该H桥电路被构造成通过分别以与半导体开关元件反向并联连接的四个半导体开关元件和续流二极管在正向和反向两个方向上使电流流向电感负载。 感性负载驱动方法和H桥电路控制装置防止由电流检测电阻器产生的噪声引起的错误操作。 当流过感性负载的电流由电流检测电阻产生的检测电压控制时，在将感性负载连接到电源之后立即忽略检测电压的值。 不存在由冲击电流和/或直流引起的错误操作的风险。 当进行电源再生以降低开关电流时，感应负载以预定周期连接到电源，并且检测当时流过的电流作为检测电压。 电流不会太大或者当前的电流变大时，不会产生稳定的风险。

    H-bridge circuit with protection against crossover conduction
    4.
    发明授权
    H-bridge circuit with protection against crossover conduction 失效
    H桥电路，防止交叉传导

    公开(公告)号：US5309347A

    公开(公告)日：1994-05-03

    申请号：US947105

    申请日：1992-09-18

    申请人： Alberto Poma ,  Vanni Poletto ,  Marco Morelli

    发明人： Alberto Poma ,  Vanni Poletto ,  Marco Morelli

    IPC分类号： H03K17/08 ,  H02M1/00 ,  H02M1/38 ,  H03K17/082 ,  H03K17/66 ,  H02M3/155

    CPC分类号： H02M1/38 ,  H03K17/0826 ,  H03K17/663

    摘要： An H-bridge circuit which includes four power transistors (an npn pull-down and a pnp pull-up for each of the output terminals). Two control circuits are connected to drive these transistors in a complementary crossover configuration, so that each control circuit can turn on the pull-up transistor on one side of the load and the pull-down transistor on the opposite side of the load. Each of the power transistors is paralleled (base-to-base) by a smaller transistor which provides a scaled current output (proportional to that of the corresponding power transistor) to the opposite control circuit. The control circuit includes static current-thresholding disable logic, which prevents turn-on until the currents through the opposite power devices have declined to threshold levels. Thus, as long as either control circuit is driving one of the pull-up transistors into in the on-state, the other control circuit will not be able to turn on the pull-down transistor which is in series with the active pull-up transistor. This efficiently prevents any condition of unlimited crowbar current, without adding any excess delay or causing any high-impedance condition at the output.

    摘要翻译： 一个H桥电路，包括四个功率晶体管（npn下拉和每个输出端子的pnp上拉）。 连接两个控制电路以以互补的交叉配置驱动这些晶体管，使得每个控制电路可以在负载的一侧上的上拉晶体管和负载的相对侧上的下拉晶体管导通。 每个功率晶体管由较小的晶体管并联（基极到基极），其提供与相对的控制电路成比例的电流输出（与对应的功率晶体管成比例）。 控制电路包括静态电流阈值禁用逻辑，其可以防止导通，直到通过相对的功率器件的电流已经下降到阈值电平。 因此，只要任一控制电路将上拉晶体管中的一个驱动到导通状态，则另一控制电路将不能接通与有源上拉串联的下拉晶体管 晶体管。 这有效地防止了无限制的撬棒电流的任何条件，而不会增加任何超出延迟或在输出端引起任何高阻抗条件。

    Current regulator for an electromagnetic load utilized in conjunction with an internal combustion engine
    5.
    发明授权
    Current regulator for an electromagnetic load utilized in conjunction with an internal combustion engine 失效
    用于与内燃机结合使用的电磁负载的电流调节器

    公开(公告)号：US4541389A

    公开(公告)日：1985-09-17

    申请号：US620054

    申请日：1984-06-13

    申请人： Wolfgang Kosak ,  Rolf Reischl ,  Andreas Pschera

    发明人： Wolfgang Kosak ,  Rolf Reischl ,  Andreas Pschera

    IPC分类号： F02D41/20 ,  G05F1/56 ,  H03K17/66

    CPC分类号： H03K17/663 ,  F02D41/20 ,  F02D2041/2017 ,  F02D2041/2058 ,  F02D2041/2072

    摘要： The invention is directed to a current regulator for an electromagnetic load used in conjunction with an internal combustion engine. The regulator produces positive and/or negative currents flowing through an electromagnetic load. In this arrangement, the two potentials present at a precision resistor that is connected in series with the load are adjusted to freely selectable values. To obtain both positive and negative currents, the current defined by the voltage drop occurring along the precision resistor is provided by a bridge circuit made up of four current-controlling arrangements. Allowance can be made for particular operating conditions of the current regulator simply by presetting desired values.

    摘要翻译： 本发明涉及一种与内燃机结合使用的电磁负载的电流调节器。 调节器产生流过电磁负载的正和/或负电流。 在这种布置中，存在于与负载串联连接的精密电阻器上的两个电位被调整为可自由选择的值。 为了获得正电流和负电流，由沿着精密电阻器发生的电压降定义的电流由由四个电流控制装置组成的桥式电路提供。 可以通过预设所需的值来简化电流调节器的特定工作条件。

    Control circuit for automobile electro-magnetic driving equipment
    6.
    发明授权
    Control circuit for automobile electro-magnetic driving equipment 失效
    汽车电磁驱动设备控制电路

    公开(公告)号：US4388571A

    公开(公告)日：1983-06-14

    申请号：US335158

    申请日：1981-12-28

    申请人： Yoshiharu Tada ,  Yuichi Kitano

    发明人： Yoshiharu Tada ,  Yuichi Kitano

    IPC分类号： B60H1/00 ,  B60R16/02 ,  F02B3/06 ,  H02P7/00 ,  H03K17/66 ,  G05B9/02

    CPC分类号： H03K17/663 ,  H02P7/04 ,  F02B3/06

    摘要： This invention relates to a control circuit for a motor for use in driving an electrically controlled door such as an air mixing door, inner and outer surrounding air ventilation door, and mode change-over door etc. or an electro-magnetic solenoid for operating an injection pump applied in a Diesel engine or another motor for use in opening or closing a window pane etc. and protects the transistors forming the control circuit.

    摘要翻译： 本发明涉及一种用于驱动诸如空气混合门，内外周围空气通风门和模式转换门等的电控门的电动机的控制电路，或者电磁螺线管，用于操作 注射泵应用在柴油发动机或另一个电动机中，用于打开或关闭窗玻璃等，并保护形成控制电路的晶体管。