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    Power supply system, image forming apparatus having the same, and low-capacity power supply circuit
    3.
    发明公开
    Power supply system, image forming apparatus having the same, and low-capacity power supply circuit 审中-公开
    Stromversorgungssystem，Bilderzeugungsvorrichtung damit，und Netzteilschaltung mit niedrigerKapazität

    公开(公告)号：EP2590308A2

    公开(公告)日：2013-05-08

    申请号：EP12186338.5

    申请日：2012-09-27

    申请人： Brother Kogyo Kabushiki Kaisha

    发明人： Inukai, Katsumi

    IPC分类号： H02M7/00

    CPC分类号： G03G15/5004 ,  G01R19/175 ,  G03G15/80 ,  G06F1/3284 ,  H02M7/06 ,  H02M2001/0006 ,  H02M2001/0032 ,  H02M2001/0048 ,  H02M2001/007 ,  Y02B70/1491 ,  Y02B70/16

    摘要： A power supply system comprises: a switching power supply for generating a DC voltage by rectifying and smoothing an AC voltage of an AC power supply; a control device switching the switching power supply between the normal mode and a power saving mode; and a low-capacity power supply circuit supplying electric power to the control device in the power saving mode. The low-capacity power supply circuit includes: two capacitors, each including one end connected to the AC power supply; a rectifier circuit that is electrically connected between the other ends of the capacitors, and rectifies the AC voltage applied between the first and second capacitors; and a zero-crossing detecting circuit that is connected to a current path at the rear stage of the rectifier circuit, and detects zero-crossing points of the AC power supply.

    摘要翻译： 电源系统包括：开关电源，用于通过整流和平滑AC电源的AC电压来产生DC电压; 控制装置在正常模式和省电模式之间切换开关电源; 以及在省电模式下向控制装置供电的低容量电源电路。 低容量电源电路包括：两个电容器，每个电容器的一端连接到交流电源; 电连接在电容器的另一端之间的整流电路，对施加在第一和第二电容器之间的交流电压进行整流; 以及过零检测电路，连接到整流电路的后级的电流路径，并检测交流电源的过零点。

    Power Supply System and Image Forming Apparatus Having Power Supply System
    5.
    发明公开
    Power Supply System and Image Forming Apparatus Having Power Supply System 审中-公开
    电源装置和图像形成装置具有的电源装置

    公开(公告)号：EP2784922A3

    公开(公告)日：2015-08-05

    申请号：EP14162087.2

    申请日：2014-03-27

    申请人： Brother Kogyo Kabushiki Kaisha

    发明人： Inukai, Katsumi

    IPC分类号： H02M1/08 ,  H04N1/00 ,  G01R19/175 ,  H02M7/217 ,  H02M1/00

    CPC分类号： H04N1/00888 ,  H02M1/083 ,  H02M7/217 ,  H02M2001/0032 ,  Y02B70/16

    摘要： A power supply system includes: a switching power supply generating a voltage from an alternating current power supply; capacitors connected to the alternating current power supply; a rectification circuit configured to rectify an alternating current voltage applied to the capacitors; a backflow regulation regulating backflow of current from the switching power supply; a signal generation circuit generating a detection signal corresponding to a zero cross point of the alternating current power supply; a power supply line connected to the switching power supply and the rectification circuit; an electricity storage unit connected to the power supply line; a voltage limit element configured to limit a voltage of the output line of the rectification circuit, and a control unit, power being fed to the control unit through the power supply line. The control unit is configured to detect a zero cross point based on the detection signal.

    Zero-crossing detector circuit and image forming apparatus having the same
    7.
    发明公开
    Zero-crossing detector circuit and image forming apparatus having the same 有权
    Nulldurchgangsdetektor und Bilderzeugungsvorrichtung damit

    公开(公告)号：EP2551681A3

    公开(公告)日：2014-07-02

    申请号：EP12177218.0

    申请日：2012-07-20

    申请人： Brother Kogyo Kabushiki Kaisha

    发明人： Inukai, Katsumi

    IPC分类号： G01R19/175 ,  H02M1/08

    CPC分类号： G01R19/175 ,  H02M1/083 ,  H02M2007/2195 ,  Y02B70/1408

    摘要： A zero-crossing detector circuit includes: a first capacitor including a first electrode configured to connect to one end of an AC power supply and a second electrode; a second capacitor including a first electrode configured to connect to the other end of the AC power supply and a second electrode; a current path, which is connected in series between the second electrode of the first capacitor and the second electrode of the second capacitor, and which is connected to a reference potential, and which generates a second-electrode-side voltage when the AC current passes through the current path; a signal converting circuit, which is connected to the AC power supply to receive the second-electrode-side voltage and then converts the second-electrode-side voltage into a pulse signal; and a detecting unit, which detects a pulse period of the pulse signal, which and detects zero-crossing points by using the pulse period.

    摘要翻译： 零交叉检测器电路包括：第一电容器，包括被配置为连接到AC电源和第二电极的一端的第一电极; 第二电容器，包括被配置为连接到所述AC电源的另一端的第一电极和第二电极; 电流路径串联连接在第一电容器的第二电极和第二电容器的第二电极之间，并且连接到参考电位，并且当交流电流通过时产生第二电极侧电压 通过目前的路径; 信号转换电路，连接到AC电源以接收第二电极侧电压，然后将第二电极侧电压转换为脉冲信号; 以及检测单元，其检测脉冲信号的脉冲周期，并且通过使用脉冲周期来检测过零点。

    Power Supply System and Image Forming Apparatus Having Power Supply System
    8.
    发明授权
    Power Supply System and Image Forming Apparatus Having Power Supply System 有权

    公开(公告)号：EP2784922B1

    公开(公告)日：2018-11-14

    申请号：EP14162087.2

    申请日：2014-03-27

    申请人： Brother Kogyo Kabushiki Kaisha

    发明人： Inukai, Katsumi

    IPC分类号： H02M1/08 ,  H04N1/00 ,  G01R19/175 ,  H02M7/217 ,  H02M1/00

    CPC分类号： H04N1/00888 ,  H02M1/083 ,  H02M7/217 ,  H02M2001/0032 ,  Y02B70/16

    摘要： A power supply system includes: a switching power supply generating a voltage from an alternating current power supply; capacitors connected to the alternating current power supply; a rectification circuit configured to rectify an alternating current voltage applied to the capacitors; a backflow regulation regulating backflow of current from the switching power supply; a signal generation circuit generating a detection signal corresponding to a zero cross point of the alternating current power supply; a power supply line connected to the switching power supply and the rectification circuit; an electricity storage unit connected to the power supply line; a voltage limit element configured to limit a voltage of the output line of the rectification circuit, and a control unit, power being fed to the control unit through the power supply line. The control unit is configured to detect a zero cross point based on the detection signal.

    Power supply system and image forming apparatus
    9.
    发明公开
    Power supply system and image forming apparatus 审中-公开
    供电系统和图像形成设备

    公开(公告)号：EP2450750A3

    公开(公告)日：2017-06-14

    申请号：EP11187731.2

    申请日：2011-11-03

    申请人： Brother Kogyo Kabushiki Kaisha

    发明人： Inukai, Katsumi

    IPC分类号： G03G15/00 ,  H02J9/00

    摘要： A power supply system includes: a switching power supply and a rectifying/smoothing circuit, the switching power supply configured to output a first output voltage in a normal output mode; a step-down circuit; a control device that controls the switching of the switching power supply between the normal output mode, a low output mode, and an off mode; and an electric storage unit charged by the output of the step-down circuit in the normal output mode and supplies power to the control device in the off mode, wherein, when charging is needed in the mode other than the normal output mode and the low output mode, the control device controls the switching power supply to output the third output voltage, thereby charging the electric storage unit.

    摘要翻译： 一种电源系统，包括：开关电源和整流平滑电路，所述开关电源用于在正常输出模式下输出第一输出电压; 降压电路; 控制装置，其控制开关电源在正常输出模式，低输出模式和关闭模式之间的切换; 以及在正常输出模式下通过降压电路的输出对蓄电单元充电，并在断开模式下向控制装置供电，其中，当需要在正常输出模式和低输出模式以外的模式下充电时 输出模式时，控制装置控制开关电源输出第三输出电压，从而对蓄电单元充电。