A control circuit is provided for a power receiver apparatus. A target voltage range setting unit sets an upper limit voltage VH and a lower limit voltage VL that define a target voltage range REF to be set for a rectified voltage VRECT that develops across a smoothing capacitor. An electric power control unit compares the rectified voltage VRECT with each of the upper limit voltage VH and the lower limit voltage VL, and generates a power control signal DPC based on the comparison result. A modulator modulates the power control signal DPC, and transmits the modulated signal to a wireless power transmitter apparatus via a reception coil. Upon detection of an oscillation state in the rectified voltage VRECT, the target voltage range setting unit expands the target voltage range REF.