| 摘要 |
There is a bridge circuit which is driven by a constant-current including a thermistor. The bridge circuit is constituted by strain gages defined by P-type diffused layers. Strain gages which constitute in combination the bridge circuit are defined by diffused resistor layers having a surface impurity concentration which is set so as to fall within the range from 2.3x1018 to 2.5x1018 atoms/cm3. The B constant of the thermistor is selected so as to fall within the range from 1400K to 2400K. |
