JPS5478490A - Loose contact detector - Google Patents

Loose contact detector

Info

Publication number
JPS5478490A
JPS5478490A JP14591777A JP14591777A JPS5478490A JP S5478490 A JPS5478490 A JP S5478490A JP 14591777 A JP14591777 A JP 14591777A JP 14591777 A JP14591777 A JP 14591777A JP S5478490 A JPS5478490 A JP S5478490A
Authority
JP
Japan
Prior art keywords
loose contact
circuit
display unit
contact
checked
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
JP14591777A
Other languages
Japanese (ja)
Inventor
Koichi Aida
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14591777A priority Critical patent/JPS5478490A/en
Publication of JPS5478490A publication Critical patent/JPS5478490A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To easily detect a loose contact, by maintaining the temporary wrong contact of a checked circuit and displaying the wrong contact.
CONSTITUTION: When wire snapping or loose contact occurs in the checked circuit 1, a flip-flop 2 is set through an AND circuit 7 and kept set thereafter. The output of a NAND circuit 6 is maintained at a low level and a display unit 3 is put in an operating state, for example, a luminous state. Then, when a switch 4 is pressed, the display unit 3 is put out of the luminous state. However, as long as the loose contact of the checked circuit 1 is not repaired, the display unit 3 repeatedly operates whenever a loose contact takes place.
COPYRIGHT: (C)1979,JPO&Japio
JP14591777A 1977-12-05 1977-12-05 Loose contact detector Pending JPS5478490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14591777A JPS5478490A (en) 1977-12-05 1977-12-05 Loose contact detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14591777A JPS5478490A (en) 1977-12-05 1977-12-05 Loose contact detector

Publications (1)

Publication Number Publication Date
JPS5478490A true JPS5478490A (en) 1979-06-22

Family

ID=15396054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14591777A Pending JPS5478490A (en) 1977-12-05 1977-12-05 Loose contact detector

Country Status (1)

Country Link
JP (1) JPS5478490A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124371U (en) * 1983-02-12 1984-08-21 アンリツ株式会社 Loose contact checker
CN110473390A (en) * 2019-09-17 2019-11-19 京能源深(苏州)能源科技有限公司 Photovoltaic power generation plate loose alarming method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124371U (en) * 1983-02-12 1984-08-21 アンリツ株式会社 Loose contact checker
JPH0351751Y2 (en) * 1983-02-12 1991-11-07
CN110473390A (en) * 2019-09-17 2019-11-19 京能源深(苏州)能源科技有限公司 Photovoltaic power generation plate loose alarming method

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