Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task A. Fundamentals of Electricity and Electronics

AM.I.A.K6

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Direct current (DC) electrical circuits.

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Pilot's Handbook of Aeronautical Knowledge p. 7-30
Chapter 7: Aircraft Systems › Electrical System
either a 14- or a 28-volt direct current (DC) electrical system. A basic aircraft electrical system consists of the following components: Alternator/generator Battery Master/battery switch • Alternator/generator switch • Bus bar, fuses, and circuit breakers • Voltage regulator • Ammeter/loadmeter • Associated electrical wiring…
Aviation Maintenance Technician Handbook - General p. 12-50
Chapter 12: Fundamentals of Electricity & Electronics › Capacitance › Capacitors in Direct Current
capacitor serves as a reservoir or storehouse for electricity. Capacitors in Direct Current When a capacitor is connected across a source of DC, such as a storage battery in the circuit shown in Figure 12-114A, and the switch…
Aviation Maintenance Technician Handbook - General p. 12-16
Chapter 12: Fundamentals of Electricity & Electronics › Current
Current Electrons in motion make up an electric current. This electric current is usually referred to as “current” or “current flow,” no matter how many electrons are moving. Current is a measurement of a rate at which a charge flows ... billion electrons. The symbol used to indicate current in formulas or on schematics is the capital letter “I.” When current flow is one direction, it is called direct current (DC). Later in the handbook, the form of current that periodically…