公开(公告)号：US20210219400A1

公开(公告)日：2021-07-15

申请号：US16081739

申请日：2017-03-23

申请人： PHILIPS LIGHTING HOLDING B.V.

发明人： Bernd ACKERMANN ,  Christian HATTRUP

IPC分类号： H05B45/39 ,  H05B45/40

摘要： The invention provides a conversion circuit for converting first signals coming from a fluorescent ballast into second signals for feeding a light circuit via a rectifier circuit, the light circuit comprising at least one light emitting diode. The conversion circuit has an inductor in a parallel branch between the two-terminal input or the two-terminal output. This enables the ballast output power be reduced without significant increase in losses. The conversion circuit is for enabling retrofit of LEDs to fluorescent ballasts.