Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying...
Reexamination Certificate
2005-06-03
2011-12-27
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
C362S551000, C362S800000
Reexamination Certificate
active
08084945
ABSTRACT:
The invention relates to a circuit (2) comprising at least two parallel-connected light-emitting diodes (4, 5) opposite poled in a first parallel branch (12) and comprising at least two parallel-connected light-emitting diodes (6, 7) opposite poled in a second parallel branch (13), and also comprising a capacitor (8) and a coil (9). According to the invention, the first parallel branch (12) has a capacitor (8) and the second parallel branch (13) has the coil (9). On account of the capacitive parallel branch (10) and the inductive parallel branch (11), idle currents arise which are phase-shifted with respect to one another. The idle currents compensate one another and light changes of the oppositely-poled diode pairs take place at different points in time. A light current is then smoothed.
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Deppe Carsten
Wendt Matthias
Beloborodov Mark L.
Chen Jianzi
Koninklijke Philips Electronics , N.V.
Owens Douglas W
Springer Kenneth D.
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