FIELD: engineering of telemetric informational systems for measuring, managing and controlling various physical values on basis of parametric sensors.
SUBSTANCE: device contains "current to voltage" transformer, clamps for connecting a signal generator and a parametric sensor, two support resistors and two operational amplifiers, which constitute shoulders of bridge circuit. As a special feature of the device, one shoulder of bridge circuit includes complex resistor with adjustable parameters, and inverting input of first operational amplifier is connected to non-inverting input of operational amplifier of "current to voltage" transformer. Due to that, not only resistive, but also inductive and capacity sensors may be used.
EFFECT: reduced influence of parasitic capacity of connecting line.
3 dwg
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