Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2007-10-09
2007-10-09
Philogene, Haissa (Department: 2821)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C363S089000, C363S021100, C363S063000, C363S098000, C363S108000, C315S291000, C315S2090SC, C315S20000A, C362S227000, C362S265000, C362S800000
Reexamination Certificate
active
10532544
ABSTRACT:
A circuit arrangement is for operating at least one light-emitting diode LED in an electrical circuit at a service voltage greater than the forward voltage of the at least one light-emitting diode. The light-emitting diode is PWM-controlled. The circuit includes reactances that are connected in series at both connections of the light-emitting diode, an additional switching arrangement between the terminals, and a full-wave rectifier circuit, such that the circuit is protected against short-circuits on the service voltage and on ground while the LED can continue to be triggered.
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Conti Temic microelectronic GmbH
Fasse W. F.
Fasse W. G.
Philogene Haissa
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