Radio Amateur Quiz Canadian License

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Question A-004-003-007

What is a three-terminal regulator?

Correct Answer

A regulator containing a voltage reference, error amplifier, sensing resistors and transistors, and a pass element

Explanation

A three-terminal IC voltage regulator (e.g., 78xx series) integrates all essential components of a linear regulator—voltage reference, error amplifier, feedback sensing (often internal for fixed output), and pass transistor—into a single package with Input, Output, and Ground terminals.

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