TDK WR Wireless Charging Coil Receiver, 19 μH

Current charging technologies make it impossible to charge devices of different brands from a single energy source. This technology is aimed at the wireless charging of mobile electronic devices such as mobile telephones or mobile cameras.

Charging through wired power chargers is replaced simply by placing the device onto the charging surface on a multi-use charging station, where the device on the charging surface is charged through magnetic induction. The interface guarantees the compatibility of the devices so that every device, independent of manufacturer or brand, can be charged on the charging surface.

The transmit and receive coils are inductively coupled, meaning the AC current in the transmit coil generates a magnetic field which induces a voltage in the receive coil to power a device. The magnetic field between the coils is highly concentrated, exposing the user to only a small leakage field which is further minimized by an EMI shield on the back of the coil.