A method of inductively transmitting energy and information between an energy transmitter comprising a primary inductor and an energy receiver comprising a secondary inductor, wherein energy is transmitted from the energy transmitter to the energy receiver by applying an alternating voltage to the primary inductor to generate a primary alternating current in the primary inductor, thereby inducing a secondary alternating current in the secondary inductor. The information is transmitted from the energy transmitter to the energy receiver essentially only in a dedicated first section of the cycle of the alternating voltage by varying the amplitude of the alternating voltage; and information is transmitted from the energy receiver to the energy transmitter essentially only in a dedicated second section of the cycle by varying the secondary inductor's power absorption, the second section not overlapping with the first section.