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    • 8. 发明申请
    • Power supply for external electrode fluorescent lamps
    • 外部电极荧光灯的电源
    • US20090146586A1
    • 2009-06-11
    • US11999568
    • 2007-12-06
    • Francis J. ParkerRobert CrawbuckEmilian Padurariu
    • Francis J. ParkerRobert CrawbuckEmilian Padurariu
    • H05B41/288
    • H05B41/2828Y10S315/07
    • The present invention provides a power supply circuit for providing power for a plurality of external electrode fluorescent lamps (EEFLs) connected in parallel, comprising a controllable voltage regulator for receiving an input power signal and for providing a regulated voltage signal, an output inverter and a resonant circuit connected to receive the regulated voltage signal and for providing a resonant frequency signal, a voltage transformation stage for receiving the resonant frequency signal for transforming the resonant frequency signal to a power voltage signal capable of driving a plurality of EEFLs connected in parallel, wherein the controllable voltage regulator is connected to receive the resonant frequency signal and is responsive thereto to keep the resonant frequency signal within an acceptable operating voltage range to power the EEFLs independently of the number of EEFLs connected to receive the power voltage signal.
    • 本发明提供了一种用于为并联连接的多个外部电极荧光灯(EEFL)提供电力的电源电路,包括用于接收输入功率信号并提供调节电压信号的可控电压调节器,输出反相器和 谐振电路,其连接以接收调节电压信号并用于提供谐振频率信号;电压变换级,用于接收用于将谐振频率信号转换成能够驱动并联连接的多个EEFL的电源电压信号的谐振频率信号,其中 连接可控电压调节器以接收谐振频率信号并响应于此,以将谐振频率信号保持在可接受的工作电压范围内,以独立于连接的EEFL的数量来供电EEFL以接收电力电压信号。
    • 9. 发明授权
    • Ground fault protection of gas lamp power supplies
    • 燃气灯电源接地故障保护
    • US5892646A
    • 1999-04-06
    • US851451
    • 1997-05-05
    • Francis J. ParkerEmilian PadurariuRichard Crawbuck
    • Francis J. ParkerEmilian PadurariuRichard Crawbuck
    • H02H3/16H05B41/285H02H3/00
    • H05B41/2851H02H3/16
    • A power supply for powering a neon sign assembly includes a ground fault detection circuit having a current sensing circuit that produces a voltage that is proportional to the current that flows from a center tap of an output transformer, a phase-sensitive rectifier that receives output from the current sensing circuit and a reference voltage from the transformer and produces an output voltage that depends on the magnitude of the output from the current sensing circuit and the phase angle between the output from the current sensing circuit and the reference voltage, and an amplitude comparator that produces an output to a latch circuit only when an output voltage from the phase-sensitive rectifier is equal to or greater than a pre-set ground fault current limit.
    • 用于为霓虹灯组件供电的电源包括接地故障检测电路,其具有电流感测电路,该电流感测电路产生与从输出变压器的中心抽头流出的电流成比例的电压;相敏整流器,其接收来自 电流检测电路和来自变压器的参考电压,并产生取决于电流检测电路的输出的幅度和电流检测电路的输出与参考电压之间的相位角的输出电压,以及幅度比较器 仅当来自相敏整流器的输出电压等于或大于预设的接地故障电流限制时才产生到锁存电路的输出。