| 摘要 |
PURPOSE:To make it possible to perform measurement in a region where an output voltage is linearly varied and to remove measurement errors of a minute load, by setting a point, to which the output voltage of a bridge circuit is shifted from a 0 volt toward positive side, as a zero point at the time of no load. CONSTITUTION:A bridge circuit 9 is divided into two regions. One region includes connecting points (c), (a), and (d), and the other region includes connecting points (c), (b), and (d). The area of the pattern of the region from a terminal VE<+> to the point (a) is added to the area of the pattern of one region, which is obtained by dividing the circuit 9 into two regions. The sum is made equal to the sum obtained in the following way: the area of the pattern of the region from a terminal VE<-> to the point (b) is added to the area of the pattern of the other region of the circuit 9. The output voltage of the circuit at the time of no load is shifted from a 0 volt toward, e.g. the positive side by 2.5X10<-5>. This point is set as a zero point. Measurement is performed in the region where the output voltage is linearly varied with respect to the variation of a load. |
