differentiator

differentiator
/dif'euh ren"shee ay'teuhr/, n.
1. a person or thing that differentiates.
2. Computers. an electronic device whose output signal is proportional to the derivative of its input signal.
3. Electricity, Electronics. a transducer or circuit (differentiator circuit) whose output is proportional to the rate of change of the input signal.
[1885-90; DIFFERENTIATE + -OR2]

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device
      a device or set of components for performing the mathematical operation of differentiation—i.e., supplying an output proportional to the derivative of the input with respect to one or more variables. The many common examples of mechanical differentiators in which a displacement is differentiated with respect to time include speedometers (speedometer) and generators (electric generator). In such devices, the derivative is frequently measured by deflections of spring-loaded elements.

 There are also electronic differentiators, or electrical differentiating circuits. The Figure—> shows a differentiator based on an electrical analog. For a time-varying input, if the capacitive reactance XC shown in the schematic diagram is very large compared with the resistance R, the current, and hence output voltage EOUT appearing across R, will lead the phase of the input voltage EIN by almost 90°. Thus the output voltage EOUT is the time derivative of the input voltage EIN, EOUT = dEIN/dt.
 

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Universalium. 2010.

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Look at other dictionaries:

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  • Differentiator — A Differentiator is a circuit that is designed such that the output of the circuit is proportional to the time derivative of the input. There are two types of differentiator circuits, active and passive. Contents 1 Theory 2 Operation 3 Uses …   Wikipedia

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  • differentiator — diferenciatorius statusas T sritis automatika atitikmenys: angl. differentiating element; differentiator vok. Differentiator, m; differenzierendes Element, n; Differenzierschaltung, f rus. дифференциатор, m pranc. différentiateur, m; organe… …   Automatikos terminų žodynas

  • Differentiator — diferenciatorius statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas diferencijavimo operacijai atlikti. Analoginio diferenciatoriaus išėjime gaunama įėjimo dydžio išvestinė pagal laiką (įėjimo dydžio kitimo sparta), skaitmeninio… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • differentiator — diferenciatorius statusas T sritis Standartizacija ir metrologija apibrėžtis Įtaisas diferencijavimo operacijai atlikti. Analoginio diferenciatoriaus išėjime gaunama įėjimo dydžio išvestinė pagal laiką (įėjimo dydžio kitimo sparta), skaitmeninio… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • Differentiator — Dif|fe|ren|zi|a|tor, (auch:) Differentiator, der; s, ...oren (Math.): Derivator …   Universal-Lexikon

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  • differentiator — differentiate ► VERB 1) recognize or identify as different; distinguish. 2) cause to appear different or distinct. 3) Mathematics transform (a function) into its derivative. DERIVATIVES differentiation noun differentiator noun …   English terms dictionary

  • differentiator — noun Anything that differentiates, or causes differentiation (in any sense) …   Wiktionary

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