JPS5663226A - 3-line resistance type burn-out circuit - Google Patents

3-line resistance type burn-out circuit

Info

Publication number
JPS5663226A
JPS5663226A JP13931979A JP13931979A JPS5663226A JP S5663226 A JPS5663226 A JP S5663226A JP 13931979 A JP13931979 A JP 13931979A JP 13931979 A JP13931979 A JP 13931979A JP S5663226 A JPS5663226 A JP S5663226A
Authority
JP
Japan
Prior art keywords
terminal
lead wire
voltage
constant current
output
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
JP13931979A
Other languages
Japanese (ja)
Inventor
Fushiaki Haruhara
Hiroyuki Doi
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.)
Chino Works Ltd
Original Assignee
Chino 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 Chino Works Ltd filed Critical Chino Works Ltd
Priority to JP13931979A priority Critical patent/JPS5663226A/en
Publication of JPS5663226A publication Critical patent/JPS5663226A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To realize both the normal measurement and the burn-out at one time and thus simplify the circuit constitution, by flowing the constant current to the temperature measuring resistor through the lead wire and extracting the output by the plural operational amplifiers.
CONSTITUTION: The constant current is supplied to one end of the temperature measuring resistor RT from the constant current source I through the terminal A and the lead wire l1; and the other end of the resistor RT is earthed via the lead wire l2 and the terminal B and at the same time connected to the nonreverse input of the operational amplifier A1 via the lead wire l3 and the terminal B'. And the voltage of the terminal A is applied to the noninverse input of the operational amplifier A2, and the output of the amplifier A1 is supplied to the reverse input of the amplifier A1. When the line l1 is disconnected, the potentials of the terminals A and B' turns to +V and zero respectively. Thus, the outputs of A1 and A2 turn to zero and the +voltage each. And in case the lines l2 and l3 are disconnected, the output of A2 turns to the +voltage. As a result, both the normal measurement and the burn-out can be performed at one time.
COPYRIGHT: (C)1981,JPO&Japio
JP13931979A 1979-10-30 1979-10-30 3-line resistance type burn-out circuit Pending JPS5663226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13931979A JPS5663226A (en) 1979-10-30 1979-10-30 3-line resistance type burn-out circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13931979A JPS5663226A (en) 1979-10-30 1979-10-30 3-line resistance type burn-out circuit

Publications (1)

Publication Number Publication Date
JPS5663226A true JPS5663226A (en) 1981-05-29

Family

ID=15242534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13931979A Pending JPS5663226A (en) 1979-10-30 1979-10-30 3-line resistance type burn-out circuit

Country Status (1)

Country Link
JP (1) JPS5663226A (en)

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