Lamp ballast circuit with overload detection and ballast operability
indication features
    2.
    发明授权
    Lamp ballast circuit with overload detection and ballast operability indication features 失效
    具有过载检测和镇流器可操作性指示功能的灯镇流器电路

    公开(公告)号:US5394062A

    公开(公告)日:1995-02-28

    申请号:US167749

    申请日:1993-12-15

    摘要: A gas discharge lamp ballast with an indicator of operability of the ballast is disclosed. The ballast circuit comprises circuitry for providing a d.c. bus voltage on a bus conductor with respect to a ground, and a resonant load circuit. The resonant load circuit includes lamp terminals for connecting to a removable gas discharge lamp, a resonant inductor, and a resonant capacitor. The resonant inductor and resonant capacitor are selected to set a magnitude, and resonant frequency, of a bidirectional current in the lamp. Further included is a converter circuitry, including first and second serially connected switches coupled between the bus conductor and the ground, and providing to the resonant load circuit, at a node coupled between the first and second switches, a voltage that alternates between first and second voltage levels. Circuitry for generating first and second switch-control signals for alternately switching into conduction the first and second switches, including circuitry responsive to a feedback signal representing a current in the resonant load circuit, are further included. The ballast circuit, moreover, includes overload detection circuitry for detecting if voltage applied to the lamp terminals exceeds an overload level; and circuitry for indicating, in response to such an overload condition being detected by the overload detection circuitry, probable operability of the ballast circuit.

    摘要翻译: 公开了一种具有镇流器可操作性的指示器的气体放电灯镇流器。 镇流器电路包括用于提供直流电压的电路。 母线电压相对于地线的总线电压,以及谐振负载电路。 谐振负载电路包括用于连接到可移除气体放电灯,谐振电感器和谐振电容器的灯端子。 选择谐振电感器和谐振电容器来设置灯中的双向电流的幅度和谐振频率。 还包括一个转换器电路,包括耦合在总线导体和地之间的第一和第二串联开关,以及在耦合在第一和第二开关之间的节点处向谐振负载电路提供在第一和第二开关之间交替的电压 电压电平。 还包括用于产生第一和第二开关控制信号的电路,用于交替切换到导通第一和第二开关,包括响应于表示谐振负载电路中的电流的反馈信号的电路。 此外,镇流器电路包括用于检测施加到灯端子的电压是否超过过载水平的过载检测电路; 以及用于响应于过载检测电路检测到的这种过载条件指示镇流器电路的可能可操作性的电路。

    Single-ended discharge lamp having an improved electrical connection
arrangement
    3.
    发明授权
    Single-ended discharge lamp having an improved electrical connection arrangement 失效
    具有改进的电连接装置的单端放电灯

    公开(公告)号:US5627433A

    公开(公告)日:1997-05-06

    申请号:US376498

    申请日:1995-01-23

    CPC分类号: H01J5/62 H01J61/56 H01J61/70

    摘要: This invention relates to a single-ended discharge lamp having an electric circuitry placed in its base member, which discharge lamp comprises a discharge tube filled with additive and gas, is sealed in a gas-tight manner and is provided with electrodes. A base member is provided for the mounting of the discharge tube and for incorporating the electric circuitry mounted on a printed circuit board therein. The base member has a screw base mounted thereon both for mechanical and electrical connection to a socket. Furthermore, the terminals of the circuitry are fixed and are electrically connected with the electrode lead wires by means of mechanical connector arrangement where the mechanical connector component is one contiguous metal part. The essential feature of the solution according to the invention is the mechanical connector arrangement includes a base part and a connection part of which the base part is embedded in the printed circuit board and the electrode lead wires are connected to the connection part. The connection part is formed as a cavity and the electrode lead wires intrude into this cavity and the electrode lead wires are mechanically fixed and simultaneously electrically connected to the wall of the cavity.

    摘要翻译: 本发明涉及一种单端放电灯,其具有放置在其基座部件中的电路,该放电灯包括填充有添加剂和气体的放电管,以气密方式密封并设置有电极。 提供了用于安装放电管并用于将安装在其中的印刷电路板上的电路并入的基座构件。 基座部件具有安装在其上的螺钉基座,用于与插座的机械和电连接。 此外,电路的端子是固定的,并且通过机械连接器装置与电极引线电连接,其中机械连接器部件是一个连续的金属部件。 根据本发明的解决方案的基本特征是机械连接器装置包括基部和连接部分,基部部分嵌入印刷电路板中,电极引线连接到连接部分。 连接部分形成为空腔,并且电极引线侵入该空腔中,并且电极引线被机械地固定并且同时电连接到腔的壁。