TWO-WIRE DIMMER WITH POWER SUPPLY AND LOAD PROTECTION CIRCUIT IN THE EVENT OF SWITCH FAILURE
    2.
    发明申请
    TWO-WIRE DIMMER WITH POWER SUPPLY AND LOAD PROTECTION CIRCUIT IN THE EVENT OF SWITCH FAILURE 审中-公开
    在开关故障的情况下提供电源和负载保护电路的双线调光器

    公开(公告)号:WO2006124893A2

    公开(公告)日:2006-11-23

    申请号:PCT/US2006/018909

    申请日:2006-05-16

    IPC分类号: H05B39/04

    CPC分类号: H05B39/044 Y02B20/146

    摘要: A dimmer circuit for providing AC power from an AC voltage source to an inductive lighting load disposed in series with the dimmer circuit, comprising: a bidirectional semiconductor switch having at least one control electrode provided with a control signal for controlling the amount of power provided to the load, the switch in normal operation being able to be controlled to block voltage in first and second opposite polarity half-cycles of the AC voltage source but in a failure mode being able to block the AC voltage source in only one polarity half-cycle of the AC voltage source and not being able to block the AC voltage source in the second opposite polarity half-cycle; a controller for the switch for determining if said failure mode of the switch occurs which can cause an asymmetry between the half-cycles delivered to the load and thus a DC voltage component to be delivered to the load; a power supply for supplying power to the controller and provided with power across the dimmer circuit; the controller controlling the switch if such failure mode occurs so as to: drive the switch into substantially full conduction during most of the half-cycle which the switch is able to control; and drive the switch into non-conduction for a brief duration of time during that same half-cycle so as to prevent a DC voltage component supplied to the load from exceeding a predetermined level below which excessive transformer heating does not occur, thereby minimizing overheating of the inductive load and enabling the power supply for the controller to be provided with sufficient voltage from the AC voltage source to enable the controller to continue to operate.

    摘要翻译: 一种用于将交流电源提供给与所述调光器电路串联设置的感应照明负载的调光电路,包括:具有至少一个控制电极的双向半导体开关,所述控制电极具有用于控制提供给 负载,正常操作中的开关能够被控制以阻止AC电压源的第一和第二相反极性半周期中的电压,但是在以仅在一个极性半周期内阻断AC电压源的故障模式 的AC电压源,并且不能在第二相反极性半周期中阻断AC电压源; 用于确定是否发生所述开关的所述故障模式的控制器,其可能导致传递到负载的半周期之间的不对称性并且因此将直流电压分量传送到负载; 用于向所述控制器供电并且在所述调光器电路上提供电力的电源; 如果发生这种故障模式,控制器控制开关,以便:在开关能够控制的半周期的大部分期间将开关驱动到基本上完全导通; 并且在相同的半周期内将开关驱动短时间的非导通,以便防止提供给负载的直流电压分量超过预定的电平,在该预定的电平以下不会发生过大的变压器加热,从而最小化过热 感应负载并使控制器的电源能够从AC电压源提供足够的电压,以使控制器能够继续工作。

    DIGITAL ADDRESSABLE ELECTRONIC BALLAST AND CONTROL UNIT
    3.
    发明申请
    DIGITAL ADDRESSABLE ELECTRONIC BALLAST AND CONTROL UNIT 审中-公开
    数字可寻址电子镇流器和控制单元

    公开(公告)号:WO2004100618A1

    公开(公告)日:2004-11-18

    申请号:PCT/US2004/013659

    申请日:2004-04-30

    IPC分类号: H05B37/02

    CPC分类号: H05B37/0272

    摘要: Systems and methods for providing a load control device, such as a DALI ballast, having an infrared receiver. The load control device resides on a digital communications link and receives infrared commands via a lightpipe. The commands are input to a microprocessor to set an address of the load control device. Addressing the load control device in this manner allows plural control devices residing on a single communications link to be addressed by the same short address. The control devices may be removed and replaced, and the short address and zone assignments of the removed devices may be reassigned to the replacement devices via infrared communication. The load control device may be placed into various modes ( e.g ., a programming mode or addressing mode) via commands received over the infrared receiver.

    摘要翻译: 用于提供具有红外接收器的负载控制装置(例如DALI镇流器)的系统和方法。 负载控制装置驻留在数字通信链路上,并通过光管接收红外命令。 这些命令被输入到微处理器以设置负载控制装置的地址。 以这种方式对负载控制装置进行寻址允许通过相同的短地址来寻址驻留在单个通信链路上的多个控制装置。 可以移除和替换控制设备,并且可以经由红外通信将被移除的设备的短地址和区域分配重新分配给替换设备。 负载控制装置可以经由红外接收器上接收的命令而被放置成各种模式(例如,编程模式或寻址模式)。