Browse our free electrical engineering textbook by product (power electronics, capacitors, inductors, and more). Great for students, makers, and professionals who are looking to refresh or expand their knowledge on a specific subject. These textbooks were originally written by Tony R. Kuphaldt and released under the Design Science License. It has since then been updated by members of the All About Circuits community and editorial team.
Amplifiers are an electronic device or circuit which is used to increase the magnitude of the signal applied to its input.
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