Backlight control circuit with two transistors
    1.
    发明授权
    Backlight control circuit with two transistors 有权
    背光控制电路有两个晶体管

    公开(公告)号:US07330003B2

    公开(公告)日:2008-02-12

    申请号:US11592940

    申请日:2006-11-03

    IPC分类号: H05B37/00

    摘要: An exemplary backlight control circuit (200) includes two load circuits (210), a pulse width modulation integrated circuit (PWM IC) (250) having a current sampling pin (251), a switching circuit (270), a first input circuit (230) and a second input circuit (240) including an input resistor. Each load circuit includes a backlight (211, 221) and an output end (212, 222). The first input circuit includes a diode (231), a resistor (232), a capacitor (233) and a voltage division resistor (234). A negative terminal of the diode is connected to ground via the resistor and the capacitor respectively, and is connected to the switching circuit. A positive terminal of the diode is connected to one of the output end of the load circuits. The other one of the output ends of the load circuits is connected to the current sampling pin via the input resistor.

    摘要翻译: 示例性背光控制电路(200)包括两个负载电路(210),具有电流采样引脚(251)的脉冲宽度调制集成电路(PWM IC)(250),开关电路(270),第一输入电路 230)以及包括输入电阻器的第二输入电路(240)。 每个负载电路包括背光源(211,221)和输出端(212,222)。 第一输入电路包括二极管(231),电阻器(232),电容器(233)和分压电阻器(234)。 二极管的负端子分别经由电阻器和电容器接地,并连接到开关电路。 二极管的正极端子连接到负载电路的输出端之一。 负载电路的另一个输出端通过输入电阻连接到电流采样引脚。

    Backlight control circuit with two transistors
    2.
    发明申请
    Backlight control circuit with two transistors 有权
    背光控制电路有两个晶体管

    公开(公告)号:US20070109253A1

    公开(公告)日:2007-05-17

    申请号:US11592940

    申请日:2006-11-03

    IPC分类号: G09G3/36

    摘要: An exemplary backlight control circuit (200) includes two load circuits (210), a pulse width modulation integrated circuit (PWM IC) (250) having a current sampling pin (251), a switching circuit (270), a first input circuit (230) and a second input circuit (240) including an input resistor. Each load circuit includes a backlight (211, 221) and an output end (212, 222). The first input circuit includes a diode (231), a resistor (232), a capacitor (233) and a voltage division resistor (234). A negative terminal of the diode is connected to ground via the resistor and the capacitor respectively, and is connected to the switching circuit. A positive terminal of the diode is connected to one of the output end of the load circuits. The other one of the output ends of the load circuits is connected to the current sampling pin via the input resistor.

    摘要翻译: 示例性背光控制电路(200)包括两个负载电路(210),具有电流采样引脚(251)的脉冲宽度调制集成电路(PWM IC)(250),开关电路(270),第一输入电路 230)和包括输入电阻器的第二输入电路(240)。 每个负载电路包括背光源(211,221)和输出端(212,222)。 第一输入电路包括二极管(231),电阻器(232),电容器(233)和分压电阻(234)。 二极管的负端子分别经由电阻器和电容器接地,并连接到开关电路。 二极管的正极端子连接到负载电路的输出端之一。 负载电路的另一个输出端通过输入电阻连接到电流采样引脚。

    Drive circuit of computer system for driving a mode indicator
    3.
    发明授权
    Drive circuit of computer system for driving a mode indicator 失效
    用于驱动模式指示器的计算机系统的驱动电路

    公开(公告)号:US07408384B2

    公开(公告)日:2008-08-05

    申请号:US11312725

    申请日:2005-12-19

    申请人: Tong Zhou Jia-Hui Tu

    发明人: Tong Zhou Jia-Hui Tu

    IPC分类号: H03K19/0175

    摘要: A drive circuit of a computer system is for driving a mode indicator. The computer system includes a first port and a second port. The mode indicator includes a first receiving end and a second receiving end. The drive circuit includes a first input end connected to the first port, a second input end connected to the second port, a first output end connected to the first receiving end, a second output end connected to the second receiving end. A power supply is connected to the first input end and the second input end via a first resistor and a second resistor respectively. The mode indicator is dichromatic and has two LEDs emitting non-matching colored light.

    摘要翻译: 计算机系统的驱动电路用于驱动模式指示器。 计算机系统包括第一端口和第二端口。 模式指示器包括第一接收端和第二接收端。 驱动电路包括连接到第一端口的第一输入端,连接到第二端口的第二输入端,连接到第一接收端的第一输出端,​​连接到第二接收端的第二输出端。 电源分别经由第一电阻和第二电阻连接到第一输入端和第二输入端。 模式指示器是二色的,并且具有发射不匹配的彩色光的两个LED。

    Power switching circuit for liquid crystal display
    4.
    发明申请
    Power switching circuit for liquid crystal display 有权
    电源开关电路用于液晶显示

    公开(公告)号:US20080180870A1

    公开(公告)日:2008-07-31

    申请号:US12011715

    申请日:2008-01-28

    申请人: Jia-Hui Tu Tong Zhou

    发明人: Jia-Hui Tu Tong Zhou

    IPC分类号: H02H9/00

    摘要: An exemplary power switching circuit (20) includes a control signal input terminal (210); an output terminal (220); direct current (DC) power supply (230); a first transistor (250) including a control electrode connected to the control signal input terminal, a first current conducting electrode, and a grounded second current conducting electrode; a second transistor (260) including a control electrode connected to first current conducting electrode of the first transistor via a discharging resistor (264) and a diode (266) respectively and connected to the DC power supply via a discharging capacitor (265), a first current conducting electrode connected to the DC power supply, and a second current conducting electrode connected to the output terminal; and a third transistor (270) including a control electrode connected to first current conducting electrode of the first transistor, a first current conducting electrode connected to the output terminal, and a second grounded current conducting electrode.

    摘要翻译: 示例性功率开关电路(20)包括控制信号输入端(210); 输出端子(220); 直流(DC)电源(230); 第一晶体管(250),包括连接到控制信号输入端子的控制电极,第一导电电极和接地的第二导电电极; 第二晶体管(260),其包括分别经由放电电阻器(264)和二极管(266)连接到第一晶体管的第一导电电极的控制电极,分别经由放电电容器(265)连接到DC电源, 连接到直流电源的第一导电电极和连接到输出端子的第二导电电极; 以及第三晶体管(270),包括连接到第一晶体管的第一导电电极的控制电极,连接到输出端子的第一导电电极和第二接地电流导电电极。

    Power switching circuit and liquid crystal display using same
    5.
    发明申请
    Power switching circuit and liquid crystal display using same 审中-公开
    电源开关电路和液晶显示器使用相同

    公开(公告)号:US20070252637A1

    公开(公告)日:2007-11-01

    申请号:US11796795

    申请日:2007-04-30

    IPC分类号: H03K17/687

    摘要: An exemplary power switching circuit (20) includes a control signal input terminal (210) which is configured for receiving a control signal; an output terminal (220) configured to be connected to a load circuit with capacitance; a direct current (DC) power supply (230); a first switching transistor (240) including a control electrode connected to the control signal input terminal, a first current conducting electrode, and a grounded second current conducting electrode; a second switching transistor (250) including a control electrode connected to the first current conducting electrode of the first switching transistor, a first current conducting electrode connected to the DC power supply, and a second current conducting electrode connected to the output terminal; and a third switching transistor (260) including a control electrode connected to the control signal input terminal, a first current conducting electrode connected to the output terminal, and a grounded second current conducting electrode.

    摘要翻译: 示例性功率开关电路(20)包括被配置为接收控制信号的控制信号输入端(210) 输出端子(220),被配置为连接到具有电容的负载电路; 直流(DC)电源(230); 第一开关晶体管(240),包括连接到控制信号输入端子的控制电极,第一导电电极和接地的第二导电电极; 第二开关晶体管(250),包括连接到第一开关晶体管的第一导电电极的控制电极,连接到直流电源的第一导电电极和连接到输出端子的第二导电电极; 以及第三开关晶体管(260),其包括连接到所述控制信号输入端子的控制电极,连接到所述输出端子的第一导电电极和接地的第二导电电极。

    Drive circuit of computer system for driving a mode indicator
    6.
    发明申请
    Drive circuit of computer system for driving a mode indicator 失效
    用于驱动模式指示器的计算机系统的驱动电路

    公开(公告)号:US20060138967A1

    公开(公告)日:2006-06-29

    申请号:US11312725

    申请日:2005-12-19

    申请人: Tong Zhou Jia-Hui Tu

    发明人: Tong Zhou Jia-Hui Tu

    IPC分类号: H05B37/04

    摘要: A drive circuit of a computer system is for driving a mode indicator. The computer system includes a first port and a second port. The mode indicator includes a first receiving end and a second receiving end. The drive circuit includes a first input end connected to the first port, a second input end connected to the second port, a first output end connected to the first receiving end, a second output end connected to the second receiving end. A power supply is connected to the first input end and the second input end via a first resistor and a second resistor respectively. The mode indicator is dichromatic and has two LEDs emitting non-matching colored light.

    摘要翻译: 计算机系统的驱动电路用于驱动模式指示器。 计算机系统包括第一端口和第二端口。 模式指示器包括第一接收端和第二接收端。 驱动电路包括连接到第一端口的第一输入端,连接到第二端口的第二输入端,连接到第一接收端的第一输出端,​​连接到第二接收端的第二输出端。 电源分别经由第一电阻和第二电阻连接到第一输入端和第二输入端。 模式指示器是二色的,并且具有发射不匹配的彩色光的两个LED。

    Power switching circuit for liquid crystal display
    7.
    发明授权
    Power switching circuit for liquid crystal display 有权
    电源开关电路用于液晶显示

    公开(公告)号:US07696646B2

    公开(公告)日:2010-04-13

    申请号:US12011715

    申请日:2008-01-28

    申请人: Jia-Hui Tu Tong Zhou

    发明人: Jia-Hui Tu Tong Zhou

    IPC分类号: H01H89/00 H02H9/00

    摘要: An exemplary power switching circuit (20) includes a control signal input terminal (210); an output terminal (220); direct current (DC) power supply (230); a first transistor (250) including a control electrode connected to the control signal input terminal, a first current conducting electrode, and a grounded second current conducting electrode; a second transistor (260) including a control electrode connected to first current conducting electrode of the first transistor via a discharging resistor (264) and a diode (266) respectively and connected to the DC power supply via a discharging capacitor (265), a first current conducting electrode connected to the DC power supply, and a second current conducting electrode connected to the output terminal; and a third transistor (270) including a control electrode connected to first current conducting electrode of the first transistor, a first current conducting electrode connected to the output terminal, and a second grounded current conducting electrode.

    摘要翻译: 示例性功率开关电路(20)包括控制信号输入端(210); 输出端子(220); 直流(DC)电源(230); 第一晶体管(250),包括连接到控制信号输入端子的控制电极,第一导电电极和接地的第二导电电极; 第二晶体管(260),其包括分别经由放电电阻器(264)和二极管(266)连接到第一晶体管的第一导电电极的控制电极,分别经由放电电容器(265)连接到DC电源, 连接到直流电源的第一导电电极和连接到输出端子的第二导电电极; 以及第三晶体管(270),包括连接到第一晶体管的第一导电电极的控制电极,连接到输出端子的第一导电电极和第二接地电流导电电极。

    Drive circuit of computer system for driving a mode indicator
    8.
    发明授权
    Drive circuit of computer system for driving a mode indicator 失效
    用于驱动模式指示器的计算机系统的驱动电路

    公开(公告)号:US07327165B2

    公开(公告)日:2008-02-05

    申请号:US11297893

    申请日:2005-12-09

    申请人: Tong Zhou Jia-Hui Tu

    发明人: Tong Zhou Jia-Hui Tu

    IPC分类号: H03K19/0175

    CPC分类号: H03K19/01806

    摘要: A drive circuit of a computer system is for driving a mode indicator. The computer system includes a first port and a second port. The mode indicator includes a first receiving end and a second receiving end. The drive circuit includes a first input end connected to the first port, a second input end connected to the second port, a first output end connected to the first receiving end, a second output end connected to the second receiving end, a power supply, a first transistor connected between the first input end and the power supply, and a second transistor connected between the second input end and the power supply. Collectors of the first and second transistors are separately connected to the first and second output ends. The mode indicator is dichromatic and has two LEDs emitting non-matching colored light.

    摘要翻译: 计算机系统的驱动电路用于驱动模式指示器。 计算机系统包括第一端口和第二端口。 模式指示器包括第一接收端和第二接收端。 驱动电路包括连接到第一端口的第一输入端,连接到第二端口的第二输入端,连接到第一接收端的第一输出端,​​连接到第二接收端的第二输出端,电源, 连接在第一输入端和电源之间的第一晶体管,以及连接在第二输入端和电源之间的第二晶体管。 第一和第二晶体管的集电极分别连接到第一和第二输出端。 模式指示器是二色的,并且具有发射不匹配的彩色光的两个LED。

    Power supply switching circuit capable of voltage regulation and flat panel display using same
    9.
    发明申请
    Power supply switching circuit capable of voltage regulation and flat panel display using same 有权
    电源开关电路采用电压调节和平板显示

    公开(公告)号:US20080106543A1

    公开(公告)日:2008-05-08

    申请号:US11982862

    申请日:2007-11-05

    申请人: Jia-Hui Tu Tong Zhou

    发明人: Jia-Hui Tu Tong Zhou

    IPC分类号: G09G5/00 G05F1/10 G05F1/44

    CPC分类号: G05F1/56 G09G3/36

    摘要: An exemplary power supply switching circuit (200) includes a first input (210) for receiving a first signal, a second input (220) for receiving a second signal, a voltage regulating circuit (240), and a signal switching circuit (250). The voltage regulating circuit includes semiconductor elements (241) electrically coupled in series. The signal switching circuit includes a first input terminal (253), a second input terminal (254), and an output terminal (255). The first input is electrically coupled to the first input terminal via the first voltage regulating circuit, the second input is electrically coupled to the second input terminal, and the output terminal is configured to be an output of the power supply switching circuit. The first voltage regulating circuit regulates the first signal via the voltage drops of the first semiconductor elements. A flat panel display using the power supply switching circuit is also provided.

    摘要翻译: 示例性电源开关电路(200)包括用于接收第一信号的第一输入端(210),用于接收第二信号的第二输入端(220),电压调节电路(240)和信号切换电路(250) 。 电压调节电路包括串联电耦合的半导体元件(241)。 信号切换电路包括第一输入端(253),第二输入端(254)和输出端(255)。 第一输入经由第一电压调节电路电耦合到第一输入端,第二输入电耦合到第二输入端,输出端被配置为电源开关电路的输出。 第一电压调节电路通过第一半导体元件的电压降调节第一信号。 还提供了使用电源开关电路的平板显示器。

    Voltage stabilizing circuit with constant current circuit
    10.
    发明申请
    Voltage stabilizing circuit with constant current circuit 审中-公开
    恒流电路稳压电路

    公开(公告)号:US20080088285A1

    公开(公告)日:2008-04-17

    申请号:US11974126

    申请日:2007-10-11

    申请人: Tong Zhou Jia-Hui Tu

    发明人: Tong Zhou Jia-Hui Tu

    IPC分类号: G05F1/44 G05F1/10

    CPC分类号: G05F1/56

    摘要: An exemplary voltage stabilizing circuit (2) includes a voltage input port (20), a voltage output port (21), a first transistor (22), a constant current circuit (23), and a feedback control circuit (24). The first transistor has a first base (221), a first emitter (222) connected to the output port, and a first collector (223) connected to the input port. The feedback control circuit has a resistor (244), a branch circuit (245-247), a voltage stabilizing unit (242), and a second transistor (241). The second transistor has a second emitter (2412) connected to ground via the voltage stabilizing unit and connected to the output port, a second collector (2413) connected to the first base of the first transistor, and a second base (2411) connected to the branch circuit. The constant current circuit provides current to the first base of the first transistor and the second collector of the second transistor.

    摘要翻译: 示例性电压稳定电路(2)包括电压输入端口(20),电压输出端口(21),第一晶体管(22),恒流电路(23)和反馈控制电路(24)。 第一晶体管具有第一基极(221),连接到输出端口的第一发射极(222)和连接到输入端口的第一集电极(223)。 反馈控制电路具有电阻(244),分支电路(245〜247),稳压单元(242)和第二晶体管(241)。 第二晶体管具有经由电压稳定单元连接到地并连接到输出端口的第二发射极(2412),连接到第一晶体管的第一基极的第二集电极(2413)和连接到第一晶体管的第二基极(2411) 分支电路。 恒流电路向第一晶体管的第一基极和第二晶体管的第二集电极提供电流。