| 摘要 |
PROBLEM TO BE SOLVED: To provide a thermometric resistor measuring circuit capable of detecting individually disconnection of each conductor in a thermometric resistor. SOLUTION: This thermometric resistor measuring circuit is provided with the thermometric resistor with one end side connected to the two conductors b, B and with the other end side connected to the one conductor A, the first constant current source connected to the conductor b, the second constant current source connected to the conductor B, a reference resistance for connecting the conductor A to a common potential point, and a voltage measuring means for measuring a voltage in a connection point between the conductor A and the reference resistance, an output current value from the first constant current source is set to be different from that from the second constant current source, and the disconnected conductor is specified based on a change of a voltage measured value measured by the voltage measuring means. COPYRIGHT: (C)2008,JPO&INPIT
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