JPS5431544A - Over current relay - Google Patents

Over current relay

Info

Publication number
JPS5431544A
JPS5431544A JP9699877A JP9699877A JPS5431544A JP S5431544 A JPS5431544 A JP S5431544A JP 9699877 A JP9699877 A JP 9699877A JP 9699877 A JP9699877 A JP 9699877A JP S5431544 A JPS5431544 A JP S5431544A
Authority
JP
Japan
Prior art keywords
over current
current relay
wave
integral
relay
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
JP9699877A
Other languages
Japanese (ja)
Inventor
Hiroshi Ando
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9699877A priority Critical patent/JPS5431544A/en
Publication of JPS5431544A publication Critical patent/JPS5431544A/en
Pending legal-status Critical Current

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  • Emergency Protection Circuit Devices (AREA)

Abstract

PURPOSE: To make operation of relay to be sure, by providing an integral circuit which starts integration by synchronizing to riser of rectangular wave which was obtained by converting alternating current in each series of positive wave and negative wave of alternating input, and level detecting circuit which compares this integral output with set level.
COPYRIGHT: (C)1979,JPO&Japio
JP9699877A 1977-08-15 1977-08-15 Over current relay Pending JPS5431544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9699877A JPS5431544A (en) 1977-08-15 1977-08-15 Over current relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9699877A JPS5431544A (en) 1977-08-15 1977-08-15 Over current relay

Publications (1)

Publication Number Publication Date
JPS5431544A true JPS5431544A (en) 1979-03-08

Family

ID=14179857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9699877A Pending JPS5431544A (en) 1977-08-15 1977-08-15 Over current relay

Country Status (1)

Country Link
JP (1) JPS5431544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616198B2 (en) 2000-07-28 2003-09-09 Brother Kogyo Kabushiki Kaisha Method and apparatus for tying threads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616198B2 (en) 2000-07-28 2003-09-09 Brother Kogyo Kabushiki Kaisha Method and apparatus for tying threads

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