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Simple Definitions

The most important electronics terms, demystified in one place.

Direct Current

Our Take

Current that only flows in one direction. Typically used in embedded devices and electronics.

Book Definition

A current that remains constant with time.

Fundamentals of Electric Circuits, 5th Edition by Charles K. Alexander and Matthew N. O. Sadiku

Current that flows in only one direction. DC voltage has a steady polarity that does not reverse.

Grob’s Basic Electronics, 11th Edition by Mitchel E. Schultz

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