МОСТОВОЕ УСТРОЙСТВО ДЛЯ ОПРЕДЕЛЕНИЯ СОПРОТИВЛЕНИЙ N РЕЗИСТИВНЫХ ДАТЧИКОВ

摘要

FIELD: measurement technology. ^ SUBSTANCE: bridge device has sequent pulse oscillator, bridge circuit and null-indicator. Oscillator has a number of power function law pulse formers, commutator and power amplifier. Both branches of bridge have additionally n-1 build-up circuits formed by functional resistor, inductance coil and amplifier. Input of amplifier is connected to point of connection of functional resistor and inductance coil. Outputs of amplifiers are connected to inputs of two analog adders. Each subsequent build-up circuit is connected with input of amplifier from previous build-up circuit. Outputs of analog adders of both branches of the bridge form diagonally opposite pair of junctions and are connected with inputs of indicators. There is no need to commutate resistance transducers by means of switches in the device which results to absence of error component caused by direct and back resistance and higher stability. ^ EFFECT: increased precision of measurement. ^ 1 dwg