(smartphones) sold from 2010, intended to replace the many incompatible proprietary power supplies and eliminate waste by reducing the total number of supplies manufactured. Conformant supplies deliver 5 VDC via a micro-USB connector, with preferred input voltage handled ranging from 90 to 264 VAC. In 2006 Larry Page, a founder of Google, proposed a and up to standard for almost all equipment requiring an external converter, with new buildings fitted with wiring, making external AC-to-DC adapter circuitry unnecessary. IEC has created a standard for interchangeable laptop power supplies, IEC 62700 (full name "IEC Technical Specification 62700: DC Power supply for notebook computer"), which was published on February 6, 2014. See also AC power plugs and sockets describes the usual sources of power for an AC adapter Adapter Battery eliminator Coaxial power connector has extensive coverage of the profusion of coaxial DC power connectors in use. Common external power supply describes standards for mobile phone battery chargers. Ferrite bead Power MOSFET, widely used in most mobile device AC adapters. Power supply describes other types of power supplies. Power supply unit (computer) Rectifier, an electrical device that converts alternating current (AC) to direct current (DC) Switched-mode power supply applications (SMPS) applications USB Power describes the USB standards for DC power delivery to connected devices. Universal Power Adapter for Mobile Devices Transformer Electronic filter References External links How to choose a wallwart for your small appliance, and how to get rid of them External Power Supplies Energy star information on external power supply specification and testing TEST AC Power Adapters By Jonathan Gordon, free iTunes eBook Power supplies Repurposing ko:전원 공급 장치 ru:Блок питания