OPTICALLY GATED MEMS SWITCH
    21.
    发明申请
    OPTICALLY GATED MEMS SWITCH 有权
    光电式MEMS开关

    公开(公告)号:US20100237227A1

    公开(公告)日:2010-09-23

    申请号:US12408937

    申请日:2009-03-23

    IPC分类号: H03K17/94

    CPC分类号: H03K17/941 H01H59/0009

    摘要: An optically powered MEMS gate driver includes a photovoltaic converter configured to receive a light signal from a light source and output a DC supply voltage for a MEMS gate driver in response thereto. The MEMS gate driver further includes a DC to DC converter electrically coupled to the photovoltaic converter and configured to output a line level DC voltage in response to the DC supply voltage. An electrical circuit, also included as a portion of the MEMS gate driver is electrically coupled to both the photovoltaic converter and the DC to DC converter is configured to receive the supply voltage and the line level voltage and to output a line level drive signal in response thereto. The optically powered MEMS gate driver is self-contained within a common EMI enclosure thus providing isolation between the gate driver and command signal electronics.

    摘要翻译: 光学驱动的MEMS栅极驱动器包括光电转换器,其被配置为从光源接收光信号,并响应于此向MEMS栅极驱动器输出DC电源电压。 MEMS栅极驱动器还包括电耦合到光伏转换器并被配置为响应于DC电源电压输出线路电平DC电压的DC-DC转换器。 还包括作为MEMS栅极驱动器的一部分的电路电耦合到光伏转换器和DC-DC转换器两者被配置为接收电源电压和线路电平电压并且响应地输出线路电平的驱动信号 到此。 光学驱动的MEMS栅极驱动器是独立于普通的EMI外壳内,从而提供栅极驱动器和命令信号电子器件之间的隔离。

    Gating Voltage Control System And Method For Electrostatically Actuating A Micro-Electromechanical Device
    25.
    发明申请
    Gating Voltage Control System And Method For Electrostatically Actuating A Micro-Electromechanical Device 有权
    静电驱动微机电装置门控电压控制系统及方法

    公开(公告)号:US20080169707A1

    公开(公告)日:2008-07-17

    申请号:US11622483

    申请日:2007-01-12

    IPC分类号: H01H9/54

    摘要: A gating voltage control system and method are provided for electrostatically actuating a micro-electromechanical systems (MEMS) device, e.g., a MEMS switch. The device may comprise an electrostatically responsive actuator movable through a gap for actuating the device to a respective actuating condition corresponding to one of a first actuating condition (e.g., a closed switching condition) and a second actuating condition (e.g., an open switching condition). The gating voltage control system may comprise a drive circuit electrically coupled to a gate terminal of the device to apply a gating voltage. The gating voltage control system may further comprise a controller electrically coupled to the drive circuit to control the gating voltage applied to the gating terminal in accordance with a gating voltage control sequence. The gating voltage control sequence may comprise a first interval for ramping up the gating voltage to a voltage level for producing an electrostatic force sufficient to accelerate the actuator through a portion of the gap to be traversed by the actuator to reach a respective actuating condition. The gating voltage control sequence may further comprise a second interval for ramping down the gating voltage to a level sufficient to reduce the electrostatic force acting on the movable actuator. This allows reducing the amount of force at which the actuator engages a contact for establishing the first actuating condition, or avoiding an overshoot position of the actuator while reaching the second actuating condition.

    摘要翻译: 提供了门控电压控制系统和方法,用于静电致动微机电系统(MEMS)装置,例如MEMS开关。 该装置可以包括静电响应致动器,其可通过间隙移动,以将装置致动到对应于第一致动状态(例如,闭合开关状态)和第二致动状态(例如,开启状态)之一的相应致动状态, 。 门控电压控制系统可以包括电耦合到该器件的栅极端子以施加选通电压的驱动电路。 门控电压控制系统还可以包括电耦合到驱动电路的控制器,以根据门控电压控制顺序控制施加到门控端子的门控电压。 门控电压控制序列可以包括用于将门控电压升高到电压电平的第一间隔,用于产生足以通过由致动器穿过的间隙的一部分来加速致动器以达到相应的致动状态的静电力。 门控电压控制序列还可以包括用于将门控电压降低到足以减小作用在可移动致动器上的静电力的水平的第二间隔。 这允许减小致动器接合接触件以建立第一致动条件的力的量,或者避免致动器在达到第二致动状态时的过冲位置。

    Current limiting system and method
    27.
    发明授权
    Current limiting system and method 失效
    限流系统和方法

    公开(公告)号:US5867356A

    公开(公告)日:1999-02-02

    申请号:US964595

    申请日:1997-11-05

    CPC分类号: H01H9/542 H02H3/025

    摘要: A current limiting system for a circuit limits current flow through the system. The current limiting system comprises at least one main switch comprising first and second main switch contacts and a contactor connecting the first and second main switch contacts; at least one current limiting device and at least one solid-state switch, which are mechanically unconnected to the main switch, and the at least one current limiting device and least one solid-state switch are arranged in series on a series side of the circuit; the at least one main switch is on a main switch side of the circuit arranged in parallel with the series side; a control that senses a predetermined condition of the circuit, and operably connected with the at least one solid state switch to open and it. Under normal operating conditions, most current flows through the at least one main switch side. When the predetermined condition causes the main switch to open, and the resistance increases in a main switch side. Thus, current flows to the series side of the circuit side. The current limiting device then switches its state from a low resistance to a high resistance state to limit the current passing through the current limiting system, where the control has sensed a predetermined condition and signals the solid-state switch to open, thereby interrupting current flow through of the current limiting system.

    摘要翻译: 电流限流系统限制了通过系统的电流。 电流限制系统包括至少一个主开关,其包括第一和第二主开关触点和连接第一和第二主开关触点的接触器; 与主开关机械地不连接的至少一个限流装置和至少一个固态开关,以及至少一个限流装置和至少一个固态开关串联布置在电路的串联侧 ; 所述至少一个主开关位于与所述串联侧并联布置的所述电路的主开关侧上; 感测电路的预定状态并且与至少一个固态开关可操作地连接以打开的控制器。 在正常工作条件下,大多数电流流经至少一个主开关侧。 当预定条件导致主开关打开时,并且主开关侧的电阻增加。 因此,电流流向电路侧的串联侧。 电流限制装置然后将其状态从低电阻切换到高电阻状态,以限制通过限流系统的电流,其中控制器已经感测到预定条件并且将固态开关发信号通过打开,从而中断电流 通过目前的限流系统。