| 摘要 |
PURPOSE:To eliminate the unbalance of AC potential due to distributed capacities of resistors, by dividing the resistor for correcting sensitivity and temperature coefficients into two parts, and connecting them to both input terminals of a strain-resistor bridge circuit. CONSTITUTION:A resistor Rs for correcting sensitivity and temperature coefficients is divided into two parts as shown by Rs/2, and they are connected to both input terminals of a bridge circuit 4. The distributed capacity of the resistor Rs is also divided into two parts Cs/2. Therefore, balance is obtained without unbalancing the AC potential with respect to the metallic body of a load cell at each node of the bridge when an AC power source 6 is observed from output terminals T1 and T2. Thus accurate operation can be performed. |
