Feedback in Amplifiers: Difference between revisions
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'''Basics of Op Amps''' |
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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 V<sub>out</sub>=G*(V<sub>+</sub>-V<sub>-</sub>), where G is the gain from the amp. |
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 V<sub>out</sub>=G*(V<sub>+</sub>-V<sub>-</sub>), where G is the gain from the amp. |
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'''Feedback''' |
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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"). |
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Works Cited: |
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"Op Amps." ''www.williamson-labs.com.'' Williams Labs, 2007. Web. 10 Jan 2010. |
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Revision as of 23:53, 10 January 2010
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.