JPS6415623A - Temperature detecting apparatus - Google Patents

Temperature detecting apparatus

Info

Publication number
JPS6415623A
JPS6415623A JP17126687A JP17126687A JPS6415623A JP S6415623 A JPS6415623 A JP S6415623A JP 17126687 A JP17126687 A JP 17126687A JP 17126687 A JP17126687 A JP 17126687A JP S6415623 A JPS6415623 A JP S6415623A
Authority
JP
Japan
Prior art keywords
voltage
temperature
point
resistor
resistance value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17126687A
Other languages
Japanese (ja)
Inventor
Hiroichi Ishida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP17126687A priority Critical patent/JPS6415623A/en
Publication of JPS6415623A publication Critical patent/JPS6415623A/en
Pending legal-status Critical Current

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  • Oscillators With Electromechanical Resonators (AREA)

Abstract

PURPOSE:To compensate for the temperatures of an oscillator and the like, by utilizing the temperature-voltage characteristic of a circuit element in a semiconductor integrated circuit, and detecting the temperatures. CONSTITUTION:The temperature characteristic at a voltage at a point R when a constant current I is made to flow in a diode 8 is shown by a straight line A in the Figure. The voltage at the point R is decreased with the increase in temperature. Meanwhile, the resistance value of a resistor 9 is increased with the increase in temperature. Therefore a voltage at a point S becomes IX(R9+DELTAR9), where R9 is the resistance value of the resistor 9, and DELTAR9 is the amount of change in resistance value of the resistor 9 due to the change in temperature from a reference temperature. Therefore, the output voltage of a differential voltage amplifier circuit 2 is obtained by multiplying the differential voltage between the voltages R50 and S50 at the point R and the point S by amplification degree K. Namely, the voltage KX(R50-S50) is outputted from an output terminal 7. Thus the signal voltage associated with the temperature can be detected.
JP17126687A 1987-07-10 1987-07-10 Temperature detecting apparatus Pending JPS6415623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17126687A JPS6415623A (en) 1987-07-10 1987-07-10 Temperature detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17126687A JPS6415623A (en) 1987-07-10 1987-07-10 Temperature detecting apparatus

Publications (1)

Publication Number Publication Date
JPS6415623A true JPS6415623A (en) 1989-01-19

Family

ID=15920140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17126687A Pending JPS6415623A (en) 1987-07-10 1987-07-10 Temperature detecting apparatus

Country Status (1)

Country Link
JP (1) JPS6415623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521489A (en) * 1993-09-01 1996-05-28 Nec Corporation Overheat detecting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5521489A (en) * 1993-09-01 1996-05-28 Nec Corporation Overheat detecting circuit

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