FIELD: radio engineering, communication.
SUBSTANCE: analogue integrator comprising two operational amplifiers, two capacitors and four resistors, as well as an additional operational amplifier, an additional capacitor, two additional resistors and a modified connection of the elements, the inverting input of the additional operational amplifier is connected to the common terminal of the existing first resistor, inverting the inputs of the existing two operational amplifiers and the existing first capacitor, the output of the additional operational amplifier forms an output relative to the "ground" of an analogue integrator, the second free terminal of the available first capacitor is connected with this output, a parallel connected additional capacitor and an additional first resistor are connected between the inverting input of the additional operational amplifier and the output of the existing second operational amplifier, the second additional resistor is connected between the "ground" and the common terminal of the additional capacitor, an additional first resistor and a non-inverting input of an additional operational amplifier.
EFFECT: integration error reduction.
1 dwg
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