▎ 摘　　要

NOVELTY - The method involves converting electrical energy by a transmission unit into sound waves (S) emitted into an environment (U) in infrasonic range or ultrasonic range, where the sound waves emitted into the environment are received by a receiving unit (10) of an electrical device. The electrical energy is generated by energy of the received sound waves. A membrane (11) of the receiving unit is excited to move a coil (30) relative to a magnet (20) by the received sound waves for generating the electrical energy, where the coil is deflected relative to the magnet by the membrane made of graphene when the sound waves impinge on the membrane. USE - Method for realizing wireless transmission of electrical energy to supply electrical devices i.e. internet of things devices, by a receiver unit (claimed). ADVANTAGE - The method enables avoiding problem that high-energy electromagnetic waves are suspected of impairing human organism, so that large number of consumers are not averse to other sources of electromagnetic waves in own households, thus avoiding affecting of humans or animals, and effectively utilizing the IOT devices so as to avoid need to use a battery as an energy source, and increasing efficiency of energy conversion, so that an installation space for an energy converter or the receiving unit is reduced by the graphene film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for receiver unit. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a receiver unit. 10Receiving unit 11Membrane 20Magnet 30Coil EEnvironment SSound waves