| 摘要 |
PURPOSE:To make possible extremely stable compensation of cold junction temperatures by series-connecting a diode and resistances, applying a constant voltage and compensating thermoelectromotive force with the voltage obtained through voltage division of the voltage generated in said resistances. CONSTITUTION:Arrangement is so made that compensaion of thermoelectromotive force E is performed with the voltage Vx obtained by series-connecting resistances R1, R2, diode D, applying a constant voltage +V and dividing the remaining voltage after deducting the forward drop voltage VD (t) of the diode D from said constant voltage +V. Since this enables the current being flowed to the series circuit of the resistances R1, R2, diode D to be determined without any restriction, it may be set so as to obtain the stable forward drop voltage. This makes it possible to perform extremely stable compensation of cold junction temperature. |
