Load driving circuit having a pair of push-pull circuits
    2.
    发明授权
    Load driving circuit having a pair of push-pull circuits 失效
    负载驱动电路具有一对推挽电路

    公开(公告)号:US5132600A

    公开(公告)日:1992-07-21

    申请号:US704306

    申请日:1991-05-22

    申请人: Hitoshi Kinoshita

    发明人: Hitoshi Kinoshita

    CPC分类号: H03K17/663 H02P7/04

    摘要: A load driving circuit includes a pair of push-pull circuits formed of bipolar transistors. A load is connected between the output terminals of the push-pull circuits and the polarity of a current flowing in the load can be changed to drive the load. The pair of push-pull circuits are controlled by means of an output transistor driving circuit. The output transistor driving circuit includes first and second driving transistors for driving output transistors constituting the push-pull circuits and first and second control transistors for preventing the flow of a through current. The emitter and collector of the first control transistor are respectively connected to the emitter and base of the first driving transistor or the emitter and base of the output transistor arranged on the power source side and constituting one push-pull circuit. The emitter and collector of the second control transistor are respectively connected to the emitter and base of the second driving transistor or the emitter and base of the output transistor arranged on the power source side and constituting another push-pull circuit. The conduction states of the first and second driving transistors are controlled by signals set in an inverted phase. The conduction state of the first and second control transistors are respectively controlled by signals which is in the same phase as the signal for controlling the second and first driving transistors.

    摘要翻译: 负载驱动电路包括由双极晶体管形成的一对推挽电路。 负载连接在推挽电路的输出端子之间,并且可以改变在负载中流动的电流的极性以驱动负载。 该对推挽电路通过输出晶体管驱动电路来控制。 输出晶体管驱动电路包括用于驱动构成推挽电路的输出晶体管的第一和第二驱动晶体管,以及用于防止通过电流流动的第一和第二控制晶体管。 第一控制晶体管的发射极和集电极分别连接到布置在电源侧的第一驱动晶体管的发射极和基极或输出晶体管的发射极和基极,并构成一个推挽电路。 第二控制晶体管的发射极和集电极分别连接到第二驱动晶体管的发射极和基极,或者连接在电源侧的输出晶体管的发射极和基极,并构成另一个推挽电路。 第一和第二驱动晶体管的导通状态由在反相中设置的信号控制。 第一和第二控制晶体管的导通状态分别由与用于控制第二和第一驱动晶体管的信号处于相同相位的信号控制。

    Hysteresis circuit
    5.
    发明授权
    Hysteresis circuit 失效
    迟滞电路

    公开(公告)号:US5287014A

    公开(公告)日:1994-02-15

    申请号:US809526

    申请日:1992-01-23

    申请人: Hitoshi Kinoshita

    发明人: Hitoshi Kinoshita

    CPC分类号: H03K17/732 H03K17/305

    摘要: A hysteresis circuit according to the invention has a thyristor circuit 101 which outputs a low voltage in an on-stage thereof, and outputs a high voltage in an off-state thereof. When an input voltage exceeds the threshold voltage of a first switching circuit 102, the circuit 102 turns on the thyristor circuit. On the other hand, when the input voltage exceeds the threshold voltage of a second switching circuit 103, the circuit 103 turns off the thyristor circuit.

    摘要翻译: PCT No.PCT / JP91 / 00693 Sec。 371日期1992年1月23日 102(e)日期1992年1月23日PCT提交1991年5月23日PCT公布。 公开号WO91 / 19354 1991年12月12日。根据本发明的迟滞电路具有晶闸管电路101,其在其阶段输出低电压,并在其截止状态下输出高电压。 当输入电压超过第一开关电路102的阈值电压时,电路102接通晶闸管电路。 另一方面,当输入电压超过第二开关电路103的阈值电压时,电路103关断晶闸管电路。

    Method and system for processing workpiece with laser seam, with
oscillation of beam spot on the workpeiece and beam oscillating
apparatus
    6.
    发明授权
    Method and system for processing workpiece with laser seam, with oscillation of beam spot on the workpeiece and beam oscillating apparatus 失效
    用激光焊缝加工工件的方法和系统,工件和梁振荡装置上的光斑振荡

    公开(公告)号:US5571430A

    公开(公告)日:1996-11-05

    申请号:US360453

    申请日:1994-12-21

    IPC分类号: G02B26/10 B23K26/06 B23K26/08

    CPC分类号: B23K26/08 B23K26/082

    摘要: Method and apparatus for bidirectionally oscillating a spot of a laser beam incident upon a workpiece to be processed with the laser beam, wherein the laser beam generated by a laser source is reflected by a movable reflecting mirror which is bidirectionally pivoted about a first axis by an oscillating actuator, so that the reflected laser beam is incident upon the workpiece. The apparatus includes a rotary support member which supports the mirror and the oscillating actuator and which is rotatable about a second axis perpendicular to the first axis, and a rotating actuator for rotating the rotary support member about the second axis during bidirectional oscillation of the spot of the laser beam incident upon the workpiece, to thereby change an oscillating direction of the beam spot.

    摘要翻译: 用于使入射到待处理的工件上的激光束的点的双向振荡的激光束的方法和装置,其中由激光源产生的激光束被可移动的反射镜反射,可动反射镜围绕第一轴被双向枢转 振荡致动器,使得反射的激光束入射到工件上。 该装置包括:旋转支撑构件,其支撑反射镜和摆动致动器,该旋转支撑构件可绕垂直于第一轴线的第二轴线旋转;以及旋转致动器,用于在第二轴线的双向摆动期间绕第二轴线旋转旋转支撑构件 激光束入射到工件上,从而改变束斑的振荡方向。

    Amplifying apparatus with a differential amplifier stage
    7.
    发明授权
    Amplifying apparatus with a differential amplifier stage 失效
    放大器与差分放大器级

    公开(公告)号:US5059919A

    公开(公告)日:1991-10-22

    申请号:US530619

    申请日:1990-05-30

    申请人: Hitoshi Kinoshita

    发明人: Hitoshi Kinoshita

    IPC分类号: H03F1/00 H03F1/30

    CPC分类号: H03F1/305

    摘要: An amplifying device comprises a differential amplifier stage, which includes a first transistor supplied with an input signal and a second transistor supplied with an output signal as a negative feedback signal, and a third transistor for detecting cutoff of a power supply voltage to be supplied to the differential amplifier stage. The third transistor controls a fourth transistor which sets the potential at the base of the first transistor at the ground level. The base of the first transistor is connected to the base of a fifth transistor, which controls a sixth transistor connected between the ground and the base of the second transistor so that in a power-off state, the fourth and sixth transistors render the potentials at the bases of the first and second transistors to be the ground level.