current vs power supply

current

noun
  • the amount of electric charge flowing in each unit of time. 

  • a tendency or a course of events 

  • The generally unidirectional movement of a gas or fluid. 

  • The part of a fluid that moves continuously in a certain direction, especially (oceanography) short for ocean current. 

adj
  • Electric; of or relating to electricity. 

  • Generally accepted, used, practiced, or prevalent at the moment. 

  • Existing or occurring at the moment. 

power supply

noun
  • That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source. 

  • A source of power such as the mains or a generator. 

  • Used other than figuratively or idiomatically: see power, supply. 

How often have the words current and power supply occurred in a corpus of books? (source: Google Ngram Viewer )