Feedback in Amplifiers

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Basics of Op Amps

Operational amplifiers are a very common component in electrical systems. The term Op-Amp specifically refers to an amplifier with two inputs, a positive input and an inverted input, and one amplified output, produced from the difference between the inputs Vout=G*(V+-V-), where G is the gain from the amp. Feedback

Since the gain in an op amp is extremely high, usually hundreds of thousands in magnitude, very small differences in input voltages can cause the output to reach the amp's maximum gain ("Op"). Works Cited:

"Op Amps." www.williamson-labs.com. Williams Labs, 2007. Web. 10 Jan 2010.

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