US Patent 11183851 Apparatus and method for AC and DC power co-distribution

Existing AC power distribution infrastructure in a building is leveraged for the DC power distribution, where one or more DC powers are delivered over an existing power distribution circuit and existing AC power sockets. A DC power attachment is coupled to an existing AC power socket to provide various DC voltages, including a high DC voltage for high power DC devices and a low DC voltage for low power DC devices. Transition from the AC centric environment to a DC environment is thus simplified thereby improving energy usage efficiency and making DC power readily available.