The wireless power system 100 may include a wireless power transmitting device 110 transmitting power and a wireless power receiving device 120 receiving power. In this example, the wireless power transmitting device 110 may be provided in the first electronic device 10, and the wireless power receiving device 120 may be provided in the second electronic device 20.

In FIG. 5A, the wireless power transmitting device 110 may include a wireless power transmitter 111, a first controller (e.g., including processing or control circuitry) 117, a first communicator (e.g., including communication circuitry) 113, and a first power supply 115.

The wireless power transmitter 111 may wirelessly transmit power to the wireless power receiving device 120. The wireless power transmitter 111 may include a first rectifier 111a, a power factor corrector (PFC) 111b, an inverter 111c, and a transmission resonator 111d.

The first rectifier 111a may convert AC power received from an external power source into DC power. For example, the first rectifier 111a may include a rectifying circuit for rectifying AC power. The rectifying circuit may be, for example, a bridge circuit (e.g., a bridge diode circuit) that rectifies the received AC power and converts the AC power into DC power.