-
公开(公告)号:US20150250033A1
公开(公告)日:2015-09-03
申请号:US14434787
申请日:2014-04-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor: Paul Robert Veldman , Patrick Alouisius Martina De Bruycker , Sait I Zmit , Yi Wang , Kumar Arulandu , Dennis Claessens , Philip Louis Zulma Vael
IPC: H05B33/08
CPC classification number: H05B33/0809 , Y02B20/342
Abstract: Lighting device suitable for multiple voltage sources, comprising a first circuit (1) with diode circuits coupled to input terminals (2, 3) for receiving first voltage signals from first circuits (21) such as voltage-to-voltage converters. The diode circuits comprise diodes (11-14) for rectifying the first voltage signals and are coupled to output terminals (4, 5) for supplying second voltage signals. First capacitors (15) are coupled to the output terminals (4, 5) for buffering the second voltage signals and for offering buffered second voltage signals to second circuits (22) such as voltage-to-current-converts for feeding light circuits (30) comprising one or more light emitting diodes. Second capacitors (16, 17) coupled in parallel to one of the diodes (11-14) provide a charge-pump effect to improve performances of the first and second circuits (21, 22) and the light circuits (30).
Abstract translation: 适用于多个电压源的照明装置,包括具有耦合到输入端子(2,3)的二极管电路的第一电路(1),用于接收来自诸如电压 - 电压转换器的第一电路(21)的第一电压信号。 二极管电路包括用于整流第一电压信号的二极管(11-14),并耦合到用于提供第二电压信号的输出端子(4,5)。 第一电容器(15)耦合到输出端子(4,5),用于缓冲第二电压信号并向第二电路(22)提供缓冲的第二电压信号,例如用于馈送光电路的电压 - 电流转换(30) )包括一个或多个发光二极管。 与二极管(11-14)中的一个并联耦合的第二电容器(16,17)提供电荷泵效应以改善第一和第二电路(21,22)和光电路(30)的性能。