Direct Current
Direct Current (DC) is the continuous flow of electric charge in one direction. In aviation, DC is used to power various electrical systems on board an aircraft, such as avionics, lighting, and communication systems. The DC power is typically generated by an aircraft's engine-driven generator or an auxiliary power unit (APU). The voltage of DC power used in aviation can vary depending on the specific system requirements, but is typically between 14 and 28 volts. DC power is also used in aircraft batteries, which provide backup power in case of a generator or APU failure.
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