Power supply An electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another (e.g., solar to chemical). Power component Definition adapted from Wikipedia. See http://en.wikipedia.org/wiki/Power_supply ODM2 Equipment Type Controlled Vocabulary ODM2 Working Group A vocabulary for describing types of equipment used for making observations. Examples include sensors, batteries, radios, dataloggers, samplers, etc.