A sensor arrangement for a foreign object detection device for a wireless power transfer system includes a multitude of detection cells, each comprising a sense coil including a winding spirally wound in a plane and having a multitude of turns. A multitude...

A sensor arrangement for a foreign object detection device for a wireless power transfer system includes a multitude of detection cells, each comprising a sense coil (20) including a winding spirally wound in a plane and having a multitude of turns. A mult...

A power adapter (10) includes a power converting circuit (100), a current detecting circuit (101), and a controlling unit (102). A charging voltage (V c ) with a constant voltage level is provided by the hub (12) through the connecting ports (120). The cur...