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Integrator

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  • Nicolae Sfetcu
    Integrator This circuit uses an LM107 to form an integrator. This circuit performs the mathematical operation of integration. This circuit is essentially a
    Message 1 of 2 , Oct 26, 2000

      Integrator

      This circuit uses an LM107 to form an integrator. This circuit performs the mathematical operation of integration. This circuit is essentially a low-pass filter with a frequency response decreasing at 6dB per octave. The circuit must be provided with an external method of establishing initial conditions. This is switch S1. When S1 is in position 1, the amplifier is connected in unity-gain and capacitor C1 is discharged, setting an initial condition of zero volts. When S1 is in position 2, the amplifier is connected as an integrator and its output will change in accordance with a constant times the time integral of the input voltage. R1 should equal R2 for minimum error due to bias current. Note fc=1/(6.28R1C1).


      Nicolae Sfetcu
      ALFA Ind. Electronics
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    • Nicolae Sfetcu
      Integrator This circuit uses an LM107 to form an integrator. This circuit performs the mathematical operation of integration. This circuit is essentially a
      Message 2 of 2 , Nov 24, 2000

        Integrator

         

        This circuit uses an LM107 to form an integrator. This circuit performs the mathematical operation of integration. This circuit is essentially a low-pass filter with a frequency response decreasing at 6dB per octave. The circuit must be provided with an external method of establishing initial conditions. This is switch S1. When S1 is in position 1, the amplifier is connected in unity-gain and capacitor C1 is discharged, setting an initial condition of zero volts. When S1 is in position 2, the amplifier is connected as an integrator and its output will change in accordance with a constant times the time integral of the input voltage. R1 should equal R2 for minimum error due to bias current. Note fc=1/(6.28R1C1).

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