FIELD: physics.
SUBSTANCE: converter has a strain gauge bridge 1, an integrator 2 on an operational amplifier 3 with a capacitor in a negative feedback circuit 4, a comparator 5 whose output is connected through a capacitor 6 to the inverting input of the amplifier 3, and through an extra resistor 7 to the power diagonal of the strain gauge bridge, the first input is connected to the output of the integrator 2 and the second input to one of the vertices of the measuring diagonals of the strain gauge bridge 1 and to the noninverting input of the operational amplifier 3. The other vertex of the measuring diagonal of the strain gauge bridge 1 is connected to the input of the integrator 2. Resistance of the resistor 7 is defined based on the given ratio.
EFFECT: more accurate conversion of the disbalance signal of a strain gauge bridge.
8 dwg, 2 tbl
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