Circuit arrangement for operating at least one light source

Details Circuit arrangement for operating at least one light source Circuit arrangement for operating at least one light source

H - Electricity

05

B

H05B 37/00 (2006.01) H05B 41/14 (2006.01)

Patent

CA 2520234

The present invention relates to a circuit arrangement for operating at least one light source. Cost-effective power factor correction of the system input is achieved by a combination of a charge pump and a valley-fill circuit. According to the invention, the voltage (U N2) produced by the charge pump is fed into the valley-fill circuit with a lag, for example by means of an inductor (L2).

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