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Operational amplifier applications — This article illustrates some typical applications of operational amplifiers. A simplified schematic notation is used, and the reader is reminded that many details such as device selection and power supply connections are not shown. Contents 1… … Wikipedia
Check weigher — Example checkweigher. Product passes on the conveyor belt where it is weighed A checkweigher is an automatic machine for checking the weight of packaged commodities. It is normally found at the offgoing end of a production process and is used to… … Wikipedia
Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 … Wikipedia
Tilting train — A tilting train is a train with a mechanism that enables increased speed on regular railway tracks. As any vehicle rounds a curve at speed, objects inside the train are in a non inertial frame and experience centrifugal force since the vehicle is … Wikipedia

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