FIELD: electricity.
SUBSTANCE: invention relates to industrial electronics, analogue-to-digital engineering and circuit design and can be used for integration of analog electric stresses varying in time. Analogue integrator includes two resistors, operational amplifier and condenser, included four additional element and changed connection elements, the first additional resistor is connected between the output of the existing operational amplifier and non-inverting input of additional operational amplifier, one of the outputs of the second additional resistor is connected to common output of the first additional resistor and non-inverting input of additional operational amplifier, other output of this second additional resistor is grounded, additional capacitor is connected parallel to the first additional resistor, inverting input of additional operating amplifier is connected to common output of the available first resistor, available capacitor and inverting input of the available operational amplifier, free output of the available capacitor is connected to the output of additional operational amplifier, besides this output forms the output of analogue integrator relative to “earth”.
EFFECT: reducing of error of integration.
1 cl, 1 dwg
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