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144 条记录 (耗时 0.012 秒)

    Apparatus and method for driving fluorescent lamp
    83.
    发明授权
    Apparatus and method for driving fluorescent lamp 有权
    荧光灯驱动装置及方法

    公开(公告)号：US09006980B2

    公开(公告)日：2015-04-14

    申请号：US13967369

    申请日：2013-08-15

    申请人： Beyond Innovation Technology Co., Ltd.

    发明人： Shih-Chung Huang ,  Kuang-Yu Jung

    IPC分类号： H05B41/06 ,  H05B41/16 ,  H05B41/282 ,  H05B41/285

    CPC分类号： H05B41/16 ,  H05B41/2828 ,  H05B41/2853

    摘要： An apparatus and a method for driving a fluorescent lamp are provided. The apparatus submitted by the present invention includes an LC resonator and an automatic frequency tracing circuit. The LC resonator is used for receiving and converting a square signal to generate a sinusoidal driving signal for driving the fluorescent lamp. The automatic frequency tracing circuit is used for making a frequency of the sinusoidal driving signal automatically following a resonant frequency of the LC resonator according to a feedback signal related to the sinusoidal driving signal.

    摘要翻译： 提供了用于驱动荧光灯的装置和方法。 本发明提供的装置包括LC谐振器和自动频率跟踪电路。 LC谐振器用于接收和转换平方信号以产生用于驱动荧光灯的正弦驱动信号。 自动频率跟踪电路用于根据与正弦驱动信号有关的反馈信号，使LC谐振器的谐振频率自动跟随正弦驱动信号的频率。

    High-pressure discharge lamp
    86.
    发明授权
    High-pressure discharge lamp 失效
    高压放电灯

    公开(公告)号：US4433272A

    公开(公告)日：1984-02-21

    申请号：US290142

    申请日：1981-08-05

    申请人： Soichiro Ogawa

    发明人： Soichiro Ogawa

    IPC分类号： H01J61/56 ,  H05B41/06 ,  H05B41/18

    CPC分类号： H05B41/06

    摘要： A high-pressure discharge lamp has a starting circuit consisting of a bimetallic switch and a resistor, which is connected in parallel with the arc tube, and is turned on via a mercury lamp ballast. The current which flows into the starting circuit is limited by the current that flows into the arc tube and by the output of the ballast. Therefore, the extinguishing voltage phenomenon that hitherto had developed immediately after the lamp was turned on no longer takes place.

    摘要翻译： 高压放电灯具有由双金属开关和电阻器组成的启动电路，其与电弧管并联连接，并通过水银灯镇流器导通。 流入启动电路的电流受流入电弧管的电流和镇流器的输出的限制。 因此，在灯开启之后立即开发的灭火电压现象不再发生。

    Fm demodulation system providing noise reduction property
    87.
    发明授权
    Fm demodulation system providing noise reduction property 失效
    FM解调系统提供噪声减少属性

    公开(公告)号：US3843928A

    公开(公告)日：1974-10-22

    申请号：US38133473

    申请日：1973-07-20

    申请人： MATSUSHITA ELECTRIC IND CO LTD

    发明人： NISHIMURA K ,  FUJISAWA K

    IPC分类号： H03D3/04 ,  H05B41/06 ,  H04B1/10

    CPC分类号： H03D3/04 ,  H05B41/06

    摘要： An FM demodulation system having means for noise reduction. The system has a signal path which includes a limiter, an FM demodulation circuit and a gate circuit, and a control circuit which includes a differentiator, two mono-stable-multivibrators, an adder and a gate signal generator. The input of this control circuit is coupled to the output of the limiter and the output of the control circuit is coupled to the control terminal of the gate circuit so as to apply a gate signal to the gate circuit. The gate circuit in the signal path operates in such a way that a demodulated signal is passed to the output terminal of the system when the gate signal is not present and the demodulated signal is prevented from passing to the output terminal when the gate signal is present. The control circuit generates the gate signal when a dropout in the FM signal occurs in the following manner. The signal from the limiter is differentiated by the differentiator and is formed into a narrow pulse train having positive and negative polarities. The positive spikes and the negative spikes of this pulse train trigger the respective ones of two mono-stable-multivibrators, and the outputs from these multivibrators are added by the adder. The output pulse-width of these multivibrator is controlled so that a marker signal appears at the output of the adder when carrier dropout in the FM signal occurs. The gate signal generator generates the gate signal from the marker signal and the resulting gate signal is fed to the control terminal of the gate circuit. a result, a noise component does not appear at the output terminal.

    摘要翻译： 一种具有降噪装置的FM解调系统。 该系统具有包括限幅器，FM解调电路和门电路的信号路径，以及包括微分器，两个单稳态多谐振荡器，加法器和门信号发生器的控制电路。 该控制电路的输入耦合到限幅器的输出端，控制电路的输出端耦合到门电路的控制端，以将门信号施加到门电路。 信号路径中的门电路以当门信号不存在时解调信号被传递到系统的输出端并且当存在门信号时防止解调信号通过到输出端的方式 。 当FM信号的压差以下列方式发生时，控制电路产生门信号。 来自限制器的信号由微分器区分，并形成具有正和负极性的窄脉冲串。 该脉冲串的正尖峰和负尖峰触发两个单稳态多谐振荡器中的相应的，并且来自这些多谐振荡器的输出由加法器相加。 控制这些多谐振荡器的输出脉冲宽度，使得当FM信号中出现载波丢失时，标记信号出现在加法器的输出端。 门信号发生器从标记信号产生门信号，并将得到的门信号送到门电路的控制端。 结果，噪声分量不会出现在输出端。

    Electro-thermic starter for igniting fluorescent lamps
    88.
    发明授权
    Electro-thermic starter for igniting fluorescent lamps 失效
    用于点燃荧光灯的电热启动器

    公开(公告)号：US3768056A

    公开(公告)日：1973-10-23

    申请号：US3768056D

    申请日：1972-04-21

    申请人： CETEK CONST ELECTROTECH

    发明人： EGURBIDE P

    IPC分类号： H05B41/08 ,  H05B41/06 ,  H05B41/12

    CPC分类号： H05B41/06

    摘要： A starter switch for a fluorescent lamp including a microswitch actuated by an electrically heated bi-metallic expansion element. A second bi-metallic element is provided to compensate for changes in ambient temperature, thus rendering the initial switch adjustments independent of surrounding temperature changes. The elements are selected to provide a desired filament heating delay for the lamp prior to ignition switching, and to recycle after a predetermined time in the event of non-ignition.

    摘要翻译： 一种用于荧光灯的起动开关，包括由电加热的双金属膨胀元件致动的微动开关。 提供第二个双金属元件来补偿环境温度的变化，从而使初始开关调整与周围的温度变化无关。 选择元件以在点火开关之前为灯提供期望的灯丝加热延迟，并且在非点火的情况下在预定时间之后再循环。