<p>A LED light source comprises a first rectifier (DB1) having input terminals coupled to an AC voltage source and output terminals connected by a first series arrangement comprising N LED loads and further comprises circuitry(I1, I2, I3, CC) for making the LED loads one by one carry a current when the momentary value of the AC voltage increases and one by one stop carrying a current when the momentary value of the AC voltage decreases. The LED light source also comprises a second rectifier (DB2) having input terminals coupled to the AC voltage source via a reactive element and output terminals connected by a second series arrangement comprising M LED loads and further comprises circuitry (I4) for making the LED loads one by one carry a current when the momentary value of the AC voltage present at the input terminals of the second rectifier increases and one by one stop carrying a current when the momentary value of the AC voltage decreases.</p>
申请公布号
WO2013027171(A1)
申请公布日期
2013.02.28
申请号
WO2012IB54217
申请日期
2012.08.21
申请人
KONINKLIJKE PHILIPS ELECTRONICS N.V.;KAHLMAN, HENRICUS MARIUS JOSEPH MARIA;KURT, RALPH;TAO, HAIMIN
发明人
KAHLMAN, HENRICUS MARIUS JOSEPH MARIA;KURT, RALPH;TAO, HAIMIN