Patent ID: 8656230

Claim:
A driving method of an electronic device, wherein the electronic device comprises a power supply circuit to which power is fed from a contactless power feeding device, a control circuit to which power supply potential is supplied from the power supply circuit, and a load circuit, and wherein the power supply potential of the power supply circuit, when the power supply circuit is connected to no load element, is an initial potential, comprising the steps of: supplying power to a first load element included in the load circuit by the power supply circuit in a first period; stopping supplying power to a second load element by the power supply circuit in a second period, so that the power supply potential of the power supply circuit is restored to more than or equal to 90% and less than 100% of the initial potential; and supplying power to a third load element included in the load circuit by the power supply circuit in a third period, wherein the second period and the third period are alternately repeated n times wherein n is an integer equal to or larger than 0.