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公开(公告)号：US20180199407A1
公开(公告)日：2018-07-12
申请号：US15739742
申请日：2016-06-28
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , G05F1/56 , H05B33/0884 , H05B33/089 , H05B37/02 , Y02B20/46
摘要： The dimming device includes a pair of input terminals, a bidirectional switch, an inputter, a power supply, a controller, and a current limiter. The power supply is electrically connected between the pair of input terminals and is supplied with electric power from an AC power supply to generate control electric power. The controller is supplied with the control electric power from the power supply to operate. The controller is configured to control the bidirectional switch in accordance with a dimming level. The current limiter stops generation of the control electric power by the power supply when a current larger than or equal to a specified value flows from the AC power supply through the power supply.
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公开(公告)号：US20190029089A1
公开(公告)日：2019-01-24
申请号：US15757349
申请日：2016-09-02
CPC分类号： H05B33/0845 , F21V23/02 , F21Y2115/10 , H05B33/0815 , H05B33/0884 , H05B37/0245
摘要： A bidirectional switch is configured to switch between conduction and non-conduction of a bidirectional current between a pair of input terminals. An inputter is configured to receive a dimming level specifying the magnitude of a light output of a load. A controller is configured to control the bidirectional switch so as to retain the bidirectional switch in an ON state for an on time having a length determined in accordance with the dimming level within a prescribed range in each of half periods of an AC voltage of an AC power supply. A corrector is configured to determine whether or not a target waveform has an anomaly with reference to a prescribed determination condition. The corrector is configured to correct the prescribed range so as to narrow the prescribed range when the target waveform has the anomaly. The target waveform is a waveform of at least one of a voltage and a current input to the pair of input terminals.
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公开(公告)号：US20180192490A1
公开(公告)日：2018-07-05
申请号：US15740370
申请日：2016-06-28
CPC分类号： H05B33/0845 , H02M1/08 , H02M1/083 , H02M7/25 , H02M2001/0029 , H02M2001/0054 , H03K17/04123 , H03K17/08122 , H03K17/133 , H03K17/567 , H03K2217/0063 , H03K2217/0072 , H03K2217/0081 , H05B33/0815 , H05B37/02 , Y02B70/1491
摘要： A signal source generates a drive signal according to a dimming level. A discharge part includes a series circuit having a Zener diode and a rectifier element connected in series. The series circuit enables passage of a reverse current of the Zener diode. In the discharge part, the series circuit is electrically connected between a control terminal and the signal source to enable the reverse current of the Zener diode to flow from the control terminal to the signal source.
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公开(公告)号：US20180235048A1
公开(公告)日：2018-08-16
申请号：US15751859
申请日：2016-09-01
CPC分类号： H05B33/0848 , H02J7/0052 , H02J7/0068 , H02J7/345 , H02J2007/0059 , H05B37/02 , H05B39/048 , Y02B20/148
摘要： In a light-dimming device according to an example of the present invention, a controller is configured to be supplied with control electric power from an electricity accumulator to operate and to retain a bidirectional switch in an on state for an on time having a length according to a dimming level in every half period of an AC voltage of an AC power supply in a lighting mode. A charger including a first charger and a second charger causes a current to flow from a pair of input terminals and to the electricity accumulator. An impedance of the second charger which is a charger in a case of causing a current to flow to the electricity accumulator in the lighting mode is lower than an impedance of the first charger which is a charger in a case of causing a current to flow to the electricity accumulator in a non-lighting mode.
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