A wireless power transmitter according to an embodiment of the present specification comprises: a power converter comprising a primary coil magnetically coupled to a secondary coil of a wireless power receiver to transmit wireless power; and a controller f...

A digital angular velocity detection device, including a stator formed on a substrate. A rotor operable to rotate in response to an inertial force is provided. The rotor has a plurality of electrodes formed at regular intervals on a curve at a predetermine...

A rotary gyroscope (10) includes a base plate (1), an intermediate structure (3), including a driven element (33) floating over the base plate as supported by a driving supporter (34) radially extending therefrom, the driven element (33) performing an osci...