发明名称 |
LED DRIVE CIRCUIT, LED ILLUMINATION FIXTURE, LED ILLUMINATION DEVICE, AND LED ILLUMINATION SYSTEM |
摘要 |
An LED drive circuit in which an alternating voltage is input and an LED is driven, and which can be connected to a phase control dimmer The LED drive circuit is provided with an edge detector for detecting an edge of the output voltage of the phase control dimmer; and a current extractor for extracting a current from a current feed line for feeding an LED drive current to the LED; wherein the value of the current extracted from the current feed line by the current extractor is varied in accordance with the detection results of the edge detector. |
申请公布号 |
KR20110106790(A) |
申请公布日期 |
2011.09.29 |
申请号 |
KR20110004864 |
申请日期 |
2011.01.18 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
SHIMIZU TAKAYUKI;WARITA HIROHISA;KANAMORI ATSUSHI;MARIYAMA MITSURU |
分类号 |
H05B37/02;F21Y101/02 |
主分类号 |
H05B37/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|