Active snubbing in a discharge lamp ballast
    3.
    发明授权
    Active snubbing in a discharge lamp ballast 失效
    在放电灯镇流器中主动缓冲

    公开(公告)号:US6054816A

    公开(公告)日:2000-04-25

    申请号:US867566

    申请日:1997-06-02

    摘要: A snubbing network is provided for reducing electromagnetic ("EM") radiation from and power dissipation of a lamp discharge ballast. The snubbing network employs at least one active device. That device being a switch coupled in parallel with the modulating switch within a converter of the ballast. The snubbing switch, in conjunction with a current limiting inductor, and a voltage change rate limiting capacitor serve to substantially eliminate reverse recovery current within a freewheeling diode of the converter prior to closing the larger (modulating) switch. Reducing the reverse recovery current before closing the modulating switch helps minimize power dissipation during switch closure. A benefit of reduced power dissipation is a reduction in EM radiation from the lamp ballast to noise sensitive electronic components placed nearby.

    摘要翻译: 提供了一种缓冲网络,用于减少灯排放镇流器的电磁辐射和“功耗”。 缓冲网络采用至少一个有源器件。 该装置是与镇流器的转换器内的调制开关并联耦合的开关。 缓冲开关结合限流电感器和电压变化率限制电容器用于在闭合较大(调制)开关之前基本上消除转换器续流二极管内的反向恢复电流。 在关闭调制开关之前降低反向恢复电流有助于最小化开关闭合期间的功耗。 降低功耗的好处是减少了从镇流器到附近放置到噪声敏感的电子元件的EM辐射。

    Water Resistant Quick Stop Scale Damper
    5.
    发明申请
    Water Resistant Quick Stop Scale Damper 有权
    防水快速停止减震器

    公开(公告)号:US20100078229A1

    公开(公告)日:2010-04-01

    申请号:US12243526

    申请日:2008-10-01

    IPC分类号: G01G21/10

    CPC分类号: G01G23/08 Y10T16/281

    摘要: A water resistant scale damper has a damper sleeve with an interior passage, an open top, and an open bottom. A piston is received in and axially slidable along the interior passage and has a top surface, an underside, and a piston rod extending from the underside toward the open bottom. A top cap is fitted over the open top of the sleeve and an air chamber is created between the top cap and the top surface of the piston. An air passage is formed through the top cap to permit air to enter and exit the air chamber. A portion of the top cap can create an elongate, non-linear air channel between the air passage and a port remote from the air passage and formed through the top cap. A bottom cap can also be fitted over the open bottom of the sleeve. The bottom cap has an annular flange that extends radially inward from a skirt of the bottom cap. The flange is funnel-shaped so as to direct liquid from beneath the underside of the piston toward a central opening in the flange. The piston rod extends through the central opening in the flange and a liquid drain gap is formed between the piston rod and the flange at the central opening.

    摘要翻译: 防水垢阻尼器具有带有内部通道,敞开的顶部和敞开的底部的阻尼器套筒。 活塞被容纳在内部通道中并且可沿轴向滑动,并且具有从下侧朝向开口底部延伸的顶表面,下侧和活塞杆。 顶盖安装在套筒的敞开的顶部上,并且在顶盖和活塞的顶部表面之间产生空气室。 通过顶盖形成空气通道,以允许空气进入和离开空气室。 顶盖的一部分可以在空气通道和远离空气通道的端口之间形成细长的非线性空气通道,并通过顶盖形成。 底盖也可以安装在套筒的开口底部。 底盖具有从底盖的裙部径向向内延伸的环形凸缘。 法兰是漏斗形的,以便将液体从活塞下侧的下方引向凸缘中的中心开口。 活塞杆延伸穿过凸缘中的中心开口,并且在中心开口处的活塞杆和凸缘之间形成液体排泄间隙。

    Lighting control console
    9.
    发明授权
    Lighting control console 失效
    照明控制台

    公开(公告)号:US5455748A

    公开(公告)日:1995-10-03

    申请号:US255926

    申请日:1994-06-07

    IPC分类号: H05B37/02 F21P5/00

    CPC分类号: H05B37/029

    摘要: A lighting control console has a base and a top. The top includes a control panel having control members on one side operably connected to control circuits on an opposite side. The circuits are covered by a removable insulation member. The top is connected to the base and is movable relative to the base between a closed position and an open position. In the closed position, the top and base are in nested contact. In the open position, the top is raised relative to the base. A storage compartment is provided in the base. The storage compartment and circuits can be accessed when the top is in the open position. When the top is in the closed position, the insulation member insulates the circuits from the storage compartment. A handle is provided on the console and is suitable for hand gripping so that the control console can be carried.

    摘要翻译: 照明控制台具有底座和顶部。 顶部包括控制面板,其控制构件在一侧可操作地连接到相对侧上的控制电路。 电路由可拆卸的绝缘构件覆盖。 顶部连接到基座并且能够在关闭位置和打开位置之间相对于基座移动。 在关闭位置,顶部和底部都嵌套接触。 在打开位置,顶部相对于底座升高。 在基座中设有储藏室。 当顶部处于打开位置时,可以访问储藏室和电路。 当顶部处于关闭位置时,绝缘构件使电路与储藏室绝缘。 在控制台上提供手柄,适用于手抓,以便可以携带控制台。

    Water resistant quick stop scale damper
    10.
    发明授权
    Water resistant quick stop scale damper 有权
    防水快速阻垢秤

    公开(公告)号:US07956297B2

    公开(公告)日:2011-06-07

    申请号:US12243526

    申请日:2008-10-01

    IPC分类号: G01G21/10

    CPC分类号: G01G23/08 Y10T16/281

    摘要: A water resistant scale damper has a damper sleeve with an interior passage, an open top, and an open bottom. A piston is received in and axially slidable along the interior passage and has a top surface, an underside, and a piston rod extending from the underside toward the open bottom. A top cap is fitted over the open top of the sleeve and an air chamber is created between the top cap and the top surface of the piston. An air passage is formed through the top cap to permit air to enter and exit the air chamber. A portion of the top cap can create an elongate, non-linear air channel between the air passage and a port remote from the air passage and formed through the top cap. A bottom cap can also be fitted over the open bottom of the sleeve. The bottom cap has an annular flange that extends radially inward from a skirt of the bottom cap. The flange is funnel-shaped so as to direct liquid from beneath the underside of the piston toward a central opening in the flange. The piston rod extends through the central opening in the flange and a liquid drain gap is formed between the piston rod and the flange at the central opening.

    摘要翻译: 防水垢阻尼器具有带有内部通道,敞开的顶部和敞开的底部的阻尼器套筒。 活塞被容纳在内部通道中并且可沿轴向滑动,并且具有从下侧朝向开口底部延伸的顶表面,下侧和活塞杆。 顶盖安装在套筒的敞开的顶部上,并且在顶盖和活塞的顶部表面之间产生空气室。 通过顶盖形成空气通道,以允许空气进入和离开空气室。 顶盖的一部分可以在空气通道和远离空气通道的端口之间形成细长的非线性空气通道,并通过顶盖形成。 底盖也可以安装在套筒的开口底部。 底盖具有从底盖的裙部径向向内延伸的环形凸缘。 法兰是漏斗形的,以便将液体从活塞下侧的下方引向凸缘中的中心开口。 活塞杆延伸穿过凸缘中的中心开口,并且在中心开口处的活塞杆和凸缘之间形成液体排泄间隙。