The most important of them, the 120v ac to 12v dc power supply. It's designed to change the higher alternating current (AC) voltage into lower direct current (DC) voltage to ensure the smooth operation and compatibility of all sorts of electronic equipment. Its main tasks are steady voltage output; protection from sudden power upsurges; and providing a stable power supply. Technological improvements of the power supply include its compact size, higher efficiency, precise voltage regulation. A popular outlet, it is used in such diverse regions as powering LED lights and home security systems to recharging electronic units and running small-scale electrical goods (Think about it: this article was even researched with one of these power supplies.) High quality materials have been used in the manufacture of this converter to provide durability and long lasting performance which render it a necessary device for anyone requiring reliability and efficiency in their power conversion sources.