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Definition of "bridge calibration" |
used in bridge transducer applications. It is achieved connecting two auxiliary circuits to the bridge. One circuit including two resistors and a potentiometer is connected in parallel to the bridge power supply diagonal, and the potentiometer tap and one end of detector are connected to the same bridge node. Sliding the tap, one can eliminate the bridge offset. Another circuit, usually including a constant and a variable resistor, is connected in series with power supply. This circuit allows one to change the voltage applied to the bridge, and to establish the correspondence between the maximal deflection of the detector and maximum of the physical variable applied to the bridge resistors playing the role of active gauges. |
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