| 摘要 |
<p>PURPOSE:To provide a measuring apparatus enabling accurate digital indication by comparing a detected voltage with a variable voltage which rises or falls by stages to obtain a comparison result which registers or indicates a voltage in reversing. CONSTITUTION:A detected voltage corresponding to measured temperature, etc. measured by means of variable resistance element 9 such as a thermistor whose temperature changes according to temperature to which constant current is applied from a constant current circuit 14 is compared with a voltage which rises or falls by stages and is outputted by a computer 11 into a comparator 10. This result of comparison corresponds to output reverse of the circuit 10 when reversing and the computer 11 outputs digital value of a voltage by stages at this point of time into a drive circuit 12 thereby the detected voltage is indicated on an indicator 13. The above described construction provides a measuring apparatus which accurately indicates a detected voltage even if the resistance value of the variable resistance element is low.</p> |
