WIRELESS POWER TRANSMITTER

A wireless power transmitter for receiving external power from a power adaptor includes an output control signal generator configured to generate an output control signal from the external power, and supply the output control signal to the power adaptor; and a wireless power generator configured to generate power to be wirelessly transmitted to a wireless power receiver using the external power supplied by the power adaptor in response to the output control signal, and wirelessly transmit the generated power to the wireless power receiver.