-
公开(公告)号：US20130249428A1
公开(公告)日：2013-09-26
申请号：US13894579
申请日：2013-05-15
CPC分类号： H02M7/06 , G05F3/08 , H05B33/0815 , H05B33/0845 , H05B37/02 , H05B39/04 , H05B39/048 , Y02B20/148
摘要： A two-wire load control device (such as, a dimmer switch) is operable to control the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) and has substantially no minimum load requirement. The dimmer switch includes a bidirectional semiconductor switch, which is operable to be rendered conductive each half-cycle and to remain conductive independent of the magnitude of a load current conducted through semiconductor switch. The dimmer switch comprises a control circuit that conducts a control current through the load in order to generate a gate drive signal for rendering the bidirectional semiconductor switch conductive and non-conductive each half-cycle. The control circuit may provide a constant gate drive to the bidirectional semiconductor switch after the bidirectional semiconductor switch is rendered conductive each half-cycle. The bidirectional semiconductor switch may comprise, for example, a triac or two field-effect transistors coupled in anti-series connection.
摘要翻译： 两线负载控制装置（例如调光开关）可操作以控制从AC电源向电负载（例如，高效照明负载）传递的功率量，并且基本上没有最小负载 需求。 调光器开关包括双向半导体开关，其可操作以每半周期导通，并且独立于通过半导体开关传导的负载电流的大小保持导通。 调光器开关包括控制电路，其通过负载传导控制电流，以便产生栅极驱动信号，以使双向半导体开关在每个半周期内导通和不导通。 在双向半导体开关在每半周期导通之后，控制电路可以向双向半导体开关提供恒定的栅极驱动。 双向半导体开关可以包括例如以反串联连接耦合的三端双向可控硅开关或两个场效应晶体管。
-
公开(公告)号：US10234890B2
公开(公告)日：2019-03-19
申请号：US15935909
申请日：2018-03-26
摘要： A load control device may control the amount of power provided to an electrical load utilizing a phase control signal that operates in a reverse phase control mode, a center phase control mode, and a forward phase control mode. A load control device may be configured to determine that the electrical load should be operated via a phase control signal operating in a forward phase-control mode. After determining to operate the electrical load via the phase control signal in the forward phase-control mode, the load control device may provide the phase control signal in a reverse phase-control mode for a predetermined period of time to the electrical load, for example, to charge a bus capacitor of the electrical load. Subsequently, the load control device may be configured to switch the phase control signal to the forward phase-control mode and provide the phase control signal in the forward phase-control mode to the electrical load.
-
公开(公告)号：US20180210481A1
公开(公告)日：2018-07-26
申请号：US15935909
申请日：2018-03-26
CPC分类号： G05F5/00 , H02M5/297 , H05B33/0809 , H05B33/0815 , H05B39/048 , Y02B20/346
摘要： A load control device may control the amount of power provided to an electrical load utilizing a phase control signal that operates in a reverse phase control mode, a center phase control mode, and a forward phase control mode. A load control device may be configured to determine that the electrical load should be operated via a phase control signal operating in a forward phase-control mode. After determining to operate the electrical load via the phase control signal in the forward phase-control mode, the load control device may provide the phase control signal in a reverse phase-control mode for a predetermined period of time to the electrical load, for example, to charge a bus capacitor of the electrical load. Subsequently, the load control device may be configured to switch the phase control signal to the forward phase-control mode and provide the phase control signal in the forward phase-control mode to the electrical load.
-
公开(公告)号：US09489005B2
公开(公告)日：2016-11-08
申请号：US13801522
申请日：2013-03-13
CPC分类号： G05F5/00 , H02M5/297 , H05B33/0809 , H05B33/0815 , H05B39/048 , Y02B20/346
摘要： A load control device may control the amount of power provided to an electrical load utilizing a phase control signal that operates in a reverse phase control mode, a center phase control mode, and a forward phase control mode. A load control device may be configured to determine that the electrical load should be operated via a phase control signal operating in a forward phase-control mode. After determining to operate the electrical load via the phase control signal in the forward phase-control mode, the load control device may provide the phase control signal in a reverse phase-control mode for a predetermined period of time to the electrical load, for example, to charge a bus capacitor of the electrical load. Subsequently, the load control device may be configured to provide the phase control signal in the forward phase-control mode to the electrical load.
摘要翻译： 负载控制装置可以利用在反相控制模式，中心相位控制模式和正相控制模式中操作的相位控制信号来控制提供给电负载的功率量。 负载控制装置可以被配置为确定通过在正向相位控制模式下操作的相位控制信号来操作电负载。 在确定通过正相控制模式中的相位控制信号来操作电负载之后，负载控制装置可以将反相控制模式的相位控制信号提供给电负载的预定时间段，例如 ，为电气负载的总线电容器充电。 随后，负载控制装置可以被配置为将正向相位控制模式中的相位控制信号提供给电负载。
-
公开(公告)号：US08664889B2
公开(公告)日：2014-03-04
申请号：US13894579
申请日：2013-05-15
IPC分类号： H05B37/02
CPC分类号： H02M7/06 , G05F3/08 , H05B33/0815 , H05B33/0845 , H05B37/02 , H05B39/04 , H05B39/048 , Y02B20/148
摘要： A two-wire load control device (such as, a dimmer switch) is operable to control the amount of power delivered from an AC power source to an electrical load (such as, a high-efficiency lighting load) and has substantially no minimum load requirement. The dimmer switch includes a bidirectional semiconductor switch, which is operable to be rendered conductive each half-cycle and to remain conductive independent of the magnitude of a load current conducted through semiconductor switch. The dimmer switch comprises a control circuit that conducts a control current through the load in order to generate a gate drive signal for rendering the bidirectional semiconductor switch conductive and non-conductive each half-cycle. The control circuit may provide a constant gate drive to the bidirectional semiconductor switch after the bidirectional semiconductor switch is rendered conductive each half-cycle. The bidirectional semiconductor switch may comprise, for example, a triac or two field-effect transistors coupled in anti-series connection.
摘要翻译： 两线负载控制装置（例如调光开关）可操作以控制从AC电源向电负载（例如，高效照明负载）传递的功率量，并且基本上没有最小负载 需求。 调光器开关包括双向半导体开关，其可操作以每半周期导通，并且独立于通过半导体开关传导的负载电流的大小保持导通。 调光器开关包括控制电路，其通过负载传导控制电流，以便产生栅极驱动信号，以使双向半导体开关在每个半周期内导通和不导通。 在双向半导体开关在每半周期导通之后，控制电路可以向双向半导体开关提供恒定的栅极驱动。 双向半导体开关可以包括例如以反串联连接耦合的三端双向可控硅开关或两个场效应晶体管。
-
-
-
-
搜索结果
25 条记录 (耗时 0.034 秒)
