FIELD: measurement technology. SUBSTANCE: according to the first variant the device has input current converters, input voltage converters, analog multiplier, which has zero additive component, charge reversing unit, hysteresis comparator, capacitor which has integrating capacity, counter. According to the second variant the device has input current and voltage converters, single-quadrant multipliers, module separation two units, unit for computing sign, charge reversing unit, hysteresis comparator, EXCLUSIVE-OR gate, integrating capacitor, counter. EFFECT: improved precision of measurement. 2 cl, 2 cl, 4 dwg
