ONLINE ELECTRICAL ENGINEERING STUDY SITE

Differentiator

Differentiator is an op amp based circuit, whose output signal is proportional to differentiation of input signal.
A differentiator is an op amp based circuit. This is basically an inverting amplifier with a capacitor of suitable value at its input terminal. The basic circuit diagram of a differentiator is shown in the figure below, differentiator circuit

The op amp used here in an ideal op amp. We know that the voltage at both inverting and non inverting terminals of an ideal op amp is same. As the electric potential at non inverting terminal is zero. Since, it is grounded, the electric potential of inverting terminal is zero, too. It is also known to us that the current entering through inverting and non inverting terminal of an ideal op amp are zero.
Considering, these conditions of ideal op amp, if we apply Kirchhoff Current Law at node 1 of the differentiator circuit, we get, The above equation shows the output voltage is the derivative of the input voltage.



Closely Related Articles Op-amp | Working Principle of Op-ampOp amp 741 or Operational Amplifier 741 ICNegative Feedback in Op amp and Closed Loop Gain of Op ampIdeal OP AmpInverting AmplifierNon Inverting AmplifierSumming AmplifierDifference AmplifierIntegratorDigital to Analog Converter or DACMore Related Articles Ohm's Law | Equation Formula and Limitation of Ohm's LawNodes, Branches and Loops of a CircuitKirchhoff Current Law and Kirchhoff Voltage LawResistances in Series and Resistances in ParallelSeries ResistanceVoltage in SeriesVoltage in ParallelElectric Current and Voltage Division RuleDelta - Star transformation | Star - Delta TransformationNodal Analysis in Electric CircuitsSingle and Multi Mesh AnalysisSuperposition TheoremThevenin Theorem and Thevenin Equivalent Voltage and ResistanceElectrical Source TransformationNorton Theorem | Norton Equivalent Current and ResistanceMaximum Power Transfer TheoremTellegen TheoremReciprocity TheoremCompensation TheoremSubstitution TheoremMillman TheoremPower in AC CircuitTrees and Cotrees of Electric NetworkWhat is Incidence Matrix?Cutset Matrix Concept of Electric CircuitTwo Port NetworkImpedance Parameters or Z ParametersAdmittance Parameters or Y ParametersHybrid Parameters or h Parameters New Articles Series and Parallel Inductors Electric PowerMeasurement of Losses in Shunt ReactorThree Phase Shunt ReactorMeasurement of Insulation ResistanceAmpere's Circuital Law
electrical engineering app