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27 条记录 (耗时 0.01 秒)

    Zero crossing detection of line voltage/current of variable amplitude
    3.
    发明公开
    Zero crossing detection of line voltage/current of variable amplitude 有权
    Nulldurchgangserkennung von Leitungsspannung / -strom unterschiedlicher Amplitude

    公开(公告)号：EP2104401A1

    公开(公告)日：2009-09-23

    申请号：EP08250907.6

    申请日：2008-03-17

    申请人： Universal Lighting Technologies, Inc.

    发明人： Shet, Deepak ,  Li, Changsheng ,  Dernovsek, John Jay

    IPC分类号： H05B37/02 ,  H05B39/04

    CPC分类号： H03K5/1536 ,  H02M1/083 ,  H05B37/0263 ,  H05B41/14

    摘要： A method and apparatus for detecting a zero crossing or desired phase angle of a power line signal having a variable amplitude uses a ratio between a peak amplitude of the power line signal and the amplitude of the power line signal at a desired phase angle for a known amplitude version of the power line signal to detect when a variable amplitude version of the power line signal is at the desired phase angle or zero crossing. The detection of the phase angle is used to determine if a notch is present in the power line signal. A substantially constant width pulse is generated if a notch is detected regardless of the amplitude of the power line voltage or current. The invention is particularly useful in a lighting system for generating and detecting pulses used to communicate information from a power line communication controller to a series of electronic ballasts over a power line used to power the ballasts. The information can be used to control a dimming function of the ballasts.

    摘要翻译： 用于检测具有可变幅度的电力线信号的零交叉或期望相位角的方法和装置使用电力线信号的峰值幅度与电力线信号的幅度之间的比率，以期望相位角为已知 电力线信号的振幅版本，以检测电力线信号的可变幅度版本何时处于期望的相位角或过零点。 使用相位角的检测来确定电力线信号中是否存在切口。 如果检测到陷波而不管电力线电压或电流的幅度如何，则产生基本恒定的宽度脉冲。 本发明在用于产生和检测用于将信息从电力线通信控制器传送到一系列用于对镇流器供电的电力线路上的电子镇流器的脉冲的照明系统中特别有用。 该信息可用于控制镇流器的调光功能。

    Power supply for vacuum fluorescent displays
    4.
    发明公开
    Power supply for vacuum fluorescent displays 失效
    真空荧光显示器的电源

    公开(公告)号：EP0442216A3

    公开(公告)日：1993-01-20

    申请号：EP90313786.7

    申请日：1990-12-17

    申请人： BEST POWER TECHNOLOGY, INC.

    发明人： Layden, David L.

    IPC分类号： G09G3/06 ,  H05B41/392

    CPC分类号： G09G3/06 ,  H05B41/14

    摘要： A power supply for vacuum fluorescent displays has a source of a relatively high frequency signal which is provided to a power driver amplifier which is also supplied with a desired supply voltage. The output of the driver amplifier is a square-wave signal varying between approximately zero and the supply voltage; this signal is provided to the filament of the vacuum fluorescent display such that the filament is heated and is self-biased at a DC level which is substantially one-half the supply voltage level. Self-biasing a capacitor between the filament and ground, which also allows the RMS level of the voltage across the filament to be controlled by controlling the frequency of the output signal from the driver amplifier. The voltage may be regulated by comparing the RMS voltage across the filament with a reference and using the difference to control the frequency of oscillation of the source. A voltage multiplier may be connected to receive the square-wave output from the driver amplifier to produce a higher level DC voltage which can be used to supply the grid and plate drivers with the higher voltage needed for these elements. Two driver amplifiers may be connected together with circuitry to self-oscillate, with the outputs of the two amplifiers being connected across the filament to heat the filament and self-bias the filament at one-half the DC supply voltage level.

    Apparatus for driving field emission lamp
    6.
    发明公开
    Apparatus for driving field emission lamp 审中-公开
    设备用于操作的场致发射灯

    公开(公告)号：EP2365736A3

    公开(公告)日：2016-08-17

    申请号：EP11157279.8

    申请日：2011-03-08

    申请人： Fuji Jukogyo Kabushiki Kaisha

    发明人： Namba, Atsushi ,  Anzawa, Seiichi

    IPC分类号： H05B41/14 ,  H01J63/06

    CPC分类号： H05B41/14

    摘要： This control, device, for a representative lamp (L1), by way of a power control circuit (20), detects the cathode (1k) from a resistor (TRk1), and controls a high-voltage stabilizing circuit (10), and performs drive controls so that the gate voltages, which were divided from the output voltage (Vgo) from the high-voltage stabilizing circuit (10), become suitable voltages. Moreover, the control device, for other lamps (L2..., Ln), by way of the power control circuit (20), changes the voltage dividing ratio of impedance dividing by resistors (R2_1, R2_2, ..., Rn_1,Rn_2) for the Output voltage (Vgo) using control elements (Q2, ...., Qn), and performs control so that the cathode current of each of the lamps (L2,..., Ln) becomes the same as the cathode current of the representative lamp (L1)

    Lighting method of high-pressure discharge lamp and lighting circuit for the same
    8.
    发明公开
    Lighting method of high-pressure discharge lamp and lighting circuit for the same 审中-公开
    BeleuchtungsverfahrenfürHochdruckentladungslampe und Beleuchtungsstromkreisdafür

    公开(公告)号：EP2869671A1

    公开(公告)日：2015-05-06

    申请号：EP14186123.7

    申请日：2014-09-24

    申请人： Phoenix Electric Co., Ltd.

    发明人： Nakagawa, Atsuji ,  Cho, Shiyoshi ,  Ushijima, Shinichi ,  Gouda, Tetsuya

    IPC分类号： H05B41/292

    CPC分类号： H01J61/523 ,  H01J61/822 ,  H05B41/14 ,  H05B41/2928 ,  Y02B20/208

    摘要： A method of lighting a high-pressure discharge lamp (X) is configured to change a power to be supplied to the high-pressure discharge lamp (X) in accordance with a luminance parameter (P) of an image content (C). The method includes switching between a low temperature operation and a high temperature operation so as to maintain a condition that mercury (30) encapsulated into an arc tube part (18) of the high-pressure discharge lamp (X) constantly partially deposits without evaporating. The low temperature operation is performed where the temperature in the arc tube part (18) is less than or equal to the deposition temperature of the mercury (30), whereas the high temperature operation is performed where the temperature in the arc tube part (18) is greater than the deposition temperature of the mercury (30).

    摘要翻译： 照明高压放电灯（X）的方法被配置为根据图像内容（C）的亮度参数（P）改变要提供给高压放电灯（X）的功率。 该方法包括在低温操作和高温操作之间切换，以便保持将高压放电灯（X）的电弧管部分（18）中的汞（30）恒定地部分沉积而不蒸发的状态。 在电弧管部分（18）中的温度小于或等于汞（30）的沉积温度的情况下执行低温操作，而在电弧管部分（18）中的温度 ）大于汞（30）的沉积温度。

    Discharge lamp lighting device, automotive high-intensity discharge lamp lighting device, automotive headlight device, and car
    9.
    发明公开
    Discharge lamp lighting device, automotive high-intensity discharge lamp lighting device, automotive headlight device, and car 审中-公开
    放电灯点亮装置，用于机动车辆，机动车辆前灯装置及车高亮度放电灯点亮装置

    公开(公告)号：EP2670224A1

    公开(公告)日：2013-12-04

    申请号：EP13169949.8

    申请日：2013-05-31

    申请人： Panasonic Corporation

    发明人： Nishikawa, Masahiro

    IPC分类号： H05B41/288 ,  H05B41/292

    CPC分类号： H05B41/14 ,  B60Q1/00 ,  H05B41/2883 ,  H05B41/2925

    摘要： The discharge lamp lighting device in accordance with the present invention includes a controller configured to perform an abnormality judgment process of judging whether or not abnormality has occurred based on a measured value of a driving voltage defined as an AC voltage applied to a discharge lamp. The controller is configured to, in the abnormality judgment process, judge whether or not an asymmetric state in which the driving voltage lacks symmetry has occurred over a predetermined period. The controller is configured to, upon concluding that the asymmetric state has occurred over the predetermined period, conclude that the abnormality has occurred.

    摘要翻译： 在与本发明雅舞蹈的放电灯点亮装置包括：被配置为在判断是否异常的异常判定处理以执行一个控制器已基于定义为在适用于放电灯的交流电压的驱动电压的测量值发生。 所述控制器被配置为在所述异常判定处理，判断是否在其中驱动电压缺乏对称性的非对称状态已发生在预定时间段。 该控制器配置为：在判断没有发生过预定时间段的不对称状态，断定的确发生了异常。