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公开(公告)号：US20160344184A1
公开(公告)日：2016-11-24
申请号：US15160909
申请日：2016-05-20
Applicant: Lutron Electronics Co., Inc.
Inventor： Dinesh Sundara Moorthy , James P. Steiner
CPC classification number: H02J3/00 , H02J9/005 , H05B33/0884
Abstract: A load control device for controlling power delivered from an AC power source to an electrical device may be configured to conduct current through earth ground and may disconnect a switching circuit to reduce an amount of current conducted through the earth ground. The load control device may comprise a controllably conductive device configured to control the power delivered from the AC power source to the electrical device so as to generate a switched-hot voltage, a switching circuit electrically coupled with a detect circuit, and a control circuit configured to render the switching circuit conductive and nonconductive. The detect circuit may generate a detect signal indicating a magnitude of the switched-hot voltage. The control circuit may be configured to monitor the detect signal and to render the switching circuit non-conductive after detecting an edge on the detect signal to reduce the total current through the earth ground.
Abstract translation: 用于控制从AC电源传送到电气设备的电力的负载控制装置可以被配置为将电流传导通过地面，并且可以断开开关电路以减少通过接地的电流量。 负载控制装置可以包括可控导电装置，其被配置为控制从AC电源向电气装置传递的功率，以便产生开关热电压，与检测电路电耦合的开关电路，以及配置为 以使开关电路导通和不导通。 检测电路可以产生指示开关热电压的大小的检测信号。 控制电路可以被配置为在检测到检测信号上的边缘之后监视检测信号并使开关电路不导通，以减少通过接地的总电流。
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公开(公告)号：US20190013758A1
公开(公告)日：2019-01-10
申请号：US16003864
申请日：2018-06-08
Applicant: Lutron Electronics Co., Inc.
Inventor： James P. Steiner , Dinesh Sundara Moorthy
Abstract: A load control device may control power delivered from a power source, such as an alternating-current (AC) power source, to at least two electrical loads, such as a lighting load and a motor load. The load control device may include multiple load control circuit, such as a dimmer circuit and a motor drive circuit, for controlling the power delivered to the lighting load and the motor load, respectively. The load control device may adjust the rotational speed of the motor load in a manner so as to minimize acoustic noise generated by the load control device and reduce the amount of time required to adjust the rotational speed of the motor load. The load control device may remain powered when one of the electrical loads (e.g., the lighting load) has been removed (e.g., electrically disconnected or uninstalled) and/or has failed in an open state (has “burnt out” or “blown out”).
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公开(公告)号：US20180359835A1
公开(公告)日：2018-12-13
申请号：US16003909
申请日：2018-06-08
Applicant: Lutron Electronics Co., Inc.
Inventor： Dinesh Sundara Moorthy , James P. Steiner
CPC classification number: H05B33/0887 , H02M1/081 , H02M1/32 , H02M7/125 , H02M7/217 , H03K17/168 , H05B33/0818 , H05B39/044
Abstract: A load control device for controlling power delivered from an alternating-current power source to an electrical load may comprise a controllably conductive device, a control circuit, and an overcurrent protection circuit that is configured to be disabled when the controllably conductive device is non-conductive. The control circuit may be configured to control the controllably conductive device to be non-conductive at the beginning of each half-cycle of the AC power source and to render the controllably conductive device conductive at a firing time during each half-cycle (e.g., using a forward phase-control dimming technique). The overcurrent protection circuit may be configured to render the controllably conductive device non-conductive in the event of an overcurrent condition in the controllably conductive device. The overcurrent protection circuit may be disabled when the controllably conductive device is non-conductive and enabled after the firing time when the controllably conductive device is rendered conductive during each half-cycle.
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