JPS5622920A - Digital temperature-measuring instrument - Google Patents

Digital temperature-measuring instrument

Info

Publication number
JPS5622920A
JPS5622920A JP9844179A JP9844179A JPS5622920A JP S5622920 A JPS5622920 A JP S5622920A JP 9844179 A JP9844179 A JP 9844179A JP 9844179 A JP9844179 A JP 9844179A JP S5622920 A JPS5622920 A JP S5622920A
Authority
JP
Japan
Prior art keywords
thermistor
temperature
output
circuit
digital
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
JP9844179A
Other languages
Japanese (ja)
Inventor
Makio Asai
Giichi Kuroda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9844179A priority Critical patent/JPS5622920A/en
Publication of JPS5622920A publication Critical patent/JPS5622920A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

PURPOSE: To obtain a digital temperature-measuring instrument low in fraction defective by putting it to pratical use that the oscillation frequency of a triangular- wave oscillating circuit is in porportion to the resistance variation of a thermistor with a temperature and then by digitally displaying its output through a digital circuit.
CONSTITUTION: Including linearized parallel resistance 2, provided to thermistor 1, as frequency deciding element 9, the triangular-wave oscillating circuit composed of operational amplifiers 7 and 8, resistances R1WR4, capacitor C1, and electric power source Vc is constituted. Since the frequency of its output Vo is in proportion to the resistance variation of thermistor 1 with temperature, its output Vo is digitally displayed through digital processing circuit 5. Therefore, the circuit constitution is simple and the failure rate and rejection rate can be reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP9844179A 1979-07-31 1979-07-31 Digital temperature-measuring instrument Pending JPS5622920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9844179A JPS5622920A (en) 1979-07-31 1979-07-31 Digital temperature-measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9844179A JPS5622920A (en) 1979-07-31 1979-07-31 Digital temperature-measuring instrument

Publications (1)

Publication Number Publication Date
JPS5622920A true JPS5622920A (en) 1981-03-04

Family

ID=14219847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9844179A Pending JPS5622920A (en) 1979-07-31 1979-07-31 Digital temperature-measuring instrument

Country Status (1)

Country Link
JP (1) JPS5622920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015500494A (en) * 2011-12-15 2015-01-05 ヴァレオ システム ドゥ コントロール モトゥール Temperature measurement method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015500494A (en) * 2011-12-15 2015-01-05 ヴァレオ システム ドゥ コントロール モトゥール Temperature measurement method

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