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About Operational Amplifiers
Operational amplifiers (op amps, op-amps) are general-purpose, closed-loop devices that are used to implement linear functions. They compare two incoming signals and release a third signal that is an amplified measure of the difference between the two. Operational amplifiers are used in signal processing circuits, control circuits, and instrumentation for automotive, commercial, industrial, medical and military applications. Input impedance and output impedance vary by op-amp application. For example, in audio applications, the input impedance is usually several times higher than the output impedance. In video and high frequency systems, the impedance of inputs, transmission lines, and outputs are designed to be the same.
Engineering Web: Operational Amplifiers - Machine Design
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Operational Power Supplies | Machine Design Devices called operational supplies can serve as sophisticated amplifiers giving a flat response from dc to 20 kHz. They also handle up to 400 W |
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Bridge Circuits | Machine Design Operational supplies, on the other hand, can be considered high-gain amplifiers. |
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Feed for Basics of Design Engineering Terms | Machine Design Power operational amplifiers (POPs) are becoming increasingly common in control circuitry. |
