Glossary
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Simple Definitions

The most important electronics terms, demystified in one place.

Power Supply

Our Take

A source of power, it can be either AC or DC when doing circuit analysis but when referring to a physical power supply, it’s usually referring to an AC to DC converter.

Book Definition

An active element that provides a specific voltage or current that is completely independent of other circuit elements.

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

A piece of test equipment used to supply DC voltage and current to electronic circuits under test.

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

A circuit that converts ac line voltage to DC voltage and supplies constant power to operate a circuit or system

Electronic Devices : Conventional Current Version, 9th Edition by Thomas L. Floyd

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