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Chapter 16: Electric Circuits: Advanced Topics

Difficulty Level: At Grade Created by: CK-12

The Big Idea

Modern circuitry depends on much more than just resistors and capacitors. The circuits in your computer, cell phone, and iPod depend on circuit elements called diodes, inductors, transistors, and operational amplifiers, as well as on other chips. In particular the invention of the transistor made the small size of modern devices possible. Transistors and op amps are known as active circuit elements. An active circuit element needs an external source of power to operate. This differentiates them from diodes, capacitors, inductors and resistors, which are passive elements.

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Date Created:

Feb 23, 2012

Last Modified:

Sep 15, 2014
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