Koninklijke Philips Corporation N.v.

Martin Paul Christoph

Dirk Hente

Joseph Hendrik Anna Maria Jacobs

A power supply circuit for providing an output voltage that is higher than an input voltage. The power supply circuit is comprised of a bridge circuit and a resonant circuit, and is coupleable to a power source and a load circuit. The power supply circuit provides a boost function for stepping up an input voltage in order to reduce the required number of battery cells in order to power a load, such as a series of LEDs.

Transformerless resonant boost supply circuit

A supply circuit includes: a bridge circuit, one or more resonant circuits coupled to the bridge circuit, each of the one or more resonant circuits being coupleable to a corresponding load circuit among one or more load circuits each of which includes one or more loads; one or more supply switching units, each of the one or more supply switching units being associated with a corresponding one of the one or more resonant circuits and being coupled between the bridge circuit and an associated one of the one or more load circuits for connecting and disconnecting the associated load circuit from the bridge circuit; and a control unit for controlling each of the one or more supply switching units in synchronization with a resonant current of the resonant circuit associated with the supply switching unit.

Supply circuit having at least one switching unit coupled between a bridge circuit and an associated load circuit

The invention relates to a mirror for personal use, with a lighting system for illuminating at least part of a person () being situated in front of the mirror. According to the invention, a position detector for detecting the position of the person () in front of the mirror is provided. Further, the lighting system comprises multiple lighting elements which can be actuated independently from each other in dependence of the signal of the position detector. It is especially preferred that the mirror is comprised of an array () of OLEDs () which can be selectively actuated to function as a mirror element or as a lighting element, respectively, in dependence of the position of the person () in front of the mirror. Further, it is preferred that these OLEDs () also act as capacitive proximity sensors for the position detector. Thus, a versatile mirror with a good mirror image without blinding is provided.

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Aachen, Germany

Martin Paul Christoph