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This article illustrates some typical operational amplifier applications. A non-ideal operational amplifier's equivalent circuit has a finite input impedance, a non-zero output impedance, and a finite gain. A real op-amp has a number of non-ideal features as shown in the diagram, but here a simplified schematic notation is used, many details such as device selection and power supply connections are not shown. Operational amplifiers are optimised for use with negative feedback, and this article discusses only negative-feedback applications. When positive feedback is required, a comparator is usually more appropriate. See Comparator applications for further information.

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  • Zapojení s operačním zesilovačem (cs)
  • Montages de base de l'amplificateur opérationnel (fr)
  • Operational amplifier applications (en)
  • Применение операционных усилителей (ru)
rdfs:comment
  • This article illustrates some typical operational amplifier applications. A non-ideal operational amplifier's equivalent circuit has a finite input impedance, a non-zero output impedance, and a finite gain. A real op-amp has a number of non-ideal features as shown in the diagram, but here a simplified schematic notation is used, many details such as device selection and power supply connections are not shown. Operational amplifiers are optimised for use with negative feedback, and this article discusses only negative-feedback applications. When positive feedback is required, a comparator is usually more appropriate. See Comparator applications for further information. (en)
  • Tento článek popisuje základní zapojení s operačními zesilovači, nejčastěji používají v různých elektronických obvodech. Zde uváděné vztahy pro výpočty týkající se těchto zapojení předpokládají, že se pracuje s ideálním operačním zesilovačem. V běžných situacích to stačí, ale pokud vlastnosti zpracovávaného signálu dosahují hraničních hodnot použitého operačního zesilovače, je třeba sáhnout po složitějších vztazích platných pro reálné operační zesilovače. (cs)
  • Les applications de l'amplificateur opérationnel sont divisées en deux grandes catégories suivant la nature de la contre-réaction : * si elle s'opère sur l'entrée inverseuse (entrée –), la contre-réaction est dite négative ce qui engendre un fonctionnement du système en mode linéaire ; * si elle s'opère sur l'entrée non inverseuse (entrée +), la contre-réaction est dite positive et a tendance à accentuer l'instabilité de la sortie qui part vers l'une des tensions de saturation. Le fonctionnement est alors en mode comparateur. (fr)
  • В статье описаны некоторые типовые применения операцио́нных усили́телей (ОУ) в аналоговой схемотехнике. Электрические схемы на рисунках изображены упрощённо, поэтому следует иметь в виду, что подробности, несущественные для объяснения работы схемы (соединения ОУ с цепями питания, блокировочные конденсаторы в цепях питания, цепи частотной коррекции ОУ, конкретный тип применённого ОУ, нумерация выводов ОУ), опущены. (ru)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Differential_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Integrating_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Inverting_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Non-Inverting_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Unity-Gain_Buffer.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Comparator.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Gyrator.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Instrumentation_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Negative_Impedance_Converter.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Precision_Rectifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Differentiating_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Exponential_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Integrating_Amplifier_balanced.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Logarithmic_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Op-Amp_Summing_Amplifier.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Wien_bridge_classic_osc.svg
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