Compact fluorescent lamp and ballast arrangement with inductor directly
between lamp ends
    1.
    发明授权
    Compact fluorescent lamp and ballast arrangement with inductor directly between lamp ends 失效
    紧凑型荧光灯和镇流器配置,电感直接在灯头之间

    公开(公告)号:US5703440A

    公开(公告)日:1997-12-30

    申请号:US647605

    申请日:1996-05-13

    摘要: Disclosed is a fluorescent lamp and ballast arrangement of the type having a lamp base for connection to a fixture that also accommodates a lamp base of an incandescent lamp. A ballast circuit contains a first conversion circuit which converts a.c. voltage to d.c. voltage and which has an electrolytic capacitor for smoothing the d.c. voltage. The ballast circuit further includes a second conversion circuit which converts the d.c. voltage into a.c. current and which includes a resonant inductor and resonant capacitor. A ballast housing has first and second ends spaced along a longitudinal axis of the housing and encloses parts of the ballast circuit. Only two lamp tube portions of the lamp terminate in the first end of the ballast housing, with the resonant inductor being positioned between the two lamp tube portions. Preferably, a pair of printed-circuit boards are positioned within the ballast housing, between the electrolytic capacitor and the resonant inductor, and are dimensioned to convectively shield the capacitor from the inductor and the lamp tube portions. Substantially all ballast components in addition to the resonant inductor and the electrolytic capacitor are preferably sandwiched between the pair of printed-circuit boards. Additionally, the electrolytic capacitor is preferably positioned at least partially within the lamp base. Employing all the foregoing features together has resulted in ballast component temperatures that are equal to, or lower, than ballast component temperatures on comparable high wattage (i.e., greater than about 20 watts) but much larger ballasts that are integral (as here) to the lamp.

    摘要翻译: 公开了一种荧光灯和镇流器布置,其具有用于连接到还容纳白炽灯的灯座的灯具的灯座的类型。 镇流器电路包含转换交流电的第一转换电路。 电压到直流 电压,并具有用于平滑直流的电解电容器。 电压。 镇流器电路还包括第二转换电路,其转换直流 电压进入。 电流,包括谐振电感和谐振电容。 镇流器壳体具有沿着壳体的纵向轴线间隔开的第一和第二端,并且包围镇流器电路的部分。 灯的两个灯管部分终止于镇流器壳体的第一端,谐振电感器位于两个灯管部分之间。 优选地,一对印刷电路板位于镇流器壳体内,位于电解电容器和谐振电感器之间,并且尺寸设计成对电屏蔽电感器和灯管部分。 除了谐振电感器和电解电容器之外,基本上所有的镇流器部件优选地夹在该对印刷电路板之间。 此外,电解电容器优选地至少部分地位于灯座内。 将所有上述特征结合在一起已经导致了压载组件的温度等于或低于镇流器部件温度,在相当高的功率(即,大于约20瓦),但是更大的镇流器是整体的(如这里)到 灯。

    Apparatus for stiffening a circuit board
    3.
    发明授权
    Apparatus for stiffening a circuit board 失效
    用于加强电路板的装置

    公开(公告)号:US5186377A

    公开(公告)日:1993-02-16

    申请号:US693005

    申请日:1991-04-29

    IPC分类号: B23K3/06

    CPC分类号: B23K3/0676 Y10S269/903

    摘要: An apparatus for stiffening a circuit board during soldering, assembly, and repair/rework, which includes an elongated crossmember having two opposing ends, an outer support leg extending downward from each crossmember end to form a bridge support with the crossmember and a central support leg extending downward from a central portion of the crossmember. A central portion of the circuit board is attached to the central support member to prevent the circuit board from softening and sagging when exposed to the heat from soldering.

    摘要翻译: 一种用于在焊接,组装和修理/返修期间加强电路板的装置,其包括具有两个相对端的细长横截面,从每个横向构件端向下延伸的外部支撑腿,以形成具有横梁的桥接支撑件和中心支撑腿 从横梁的中心部分向下延伸。 电路板的中心部分附着在中央支撑件上,以防止电路板暴露于来自焊接的热量时软化和下垂。