Koninklijke Philips Corporation N.v.

Lennaert Quirijn Bronts

Andries Van Wageningen

Antonius Adriaan Maria Staring

Wilhelmus Gerardus Maria Ettes

Eddy Gerrit Veltman

A power transmitter () for a wireless power transfer system includes a parallel resonance circuit () comprising at a transmitter coil () for generating the power transfer signal. A power source () has a current sink terminal and a power source terminal providing current to the parallel resonance circuit () with a limited rate of change of the current drawn. A first switch element () is coupled between a first end of the parallel resonance circuit () and the current sink terminal. A second switch element () is coupled between the other end and the current sink terminal. A driver () generates a cyclic drive signal such that each cycle comprises a two time intervals in which one switch element () is closed and the other () is open; and a third time interval in which both the first switch element () and the second switch element () are closed, the third time interval being between the other two intervals.

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Tricht, Netherlands

Lennaert Quirijn Bronts