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JPS54113051A - Integrating circuit of time-limit relay - Google Patents

Integrating circuit of time-limit relay

Info

Publication number
JPS54113051A
JPS54113051A JP1968478A JP1968478A JPS54113051A JP S54113051 A JPS54113051 A JP S54113051A JP 1968478 A JP1968478 A JP 1968478A JP 1968478 A JP1968478 A JP 1968478A JP S54113051 A JPS54113051 A JP S54113051A
Authority
JP
Japan
Prior art keywords
condenser
comparator
transistors
become
input
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
JP1968478A
Other languages
Japanese (ja)
Inventor
Shigeru Mori
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 JP1968478A priority Critical patent/JPS54113051A/en
Publication of JPS54113051A publication Critical patent/JPS54113051A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Electronic Switches (AREA)
  • Relay Circuits (AREA)

Abstract

PURPOSE: To shorten feedback time and also to make reproduciveness better by procedure in which a discharge circuit consisting of semi-conductor switching elements is directly added to condenser and the charge of the condenser of integrating circuit is discharged promptly and completely.
CONSTITUTION: When the input 1 is lower than the voltage of the (+) terminal of the comparator 2 which is determined by the resistance values R1 and R2, the transistors Tr and Tr30 become ON and thus the condenser C is not charged. When the input 1 exceeds the voltage of the (+) terminal of the comparator 2, the transistors Tr and Tr30 become OFF and thus the condenser C is charged. When the voltage exceeds a certain value, the comparator 3 gives off a output. When the input 1 becomes below a predetermined value, the transistors Tr and Tr30 become ON again and the charge of the condenser C is thus discharged promptly through the transistor 30.
COPYRIGHT: (C)1979,JPO&Japio
JP1968478A 1978-02-24 1978-02-24 Integrating circuit of time-limit relay Pending JPS54113051A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1968478A JPS54113051A (en) 1978-02-24 1978-02-24 Integrating circuit of time-limit relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1968478A JPS54113051A (en) 1978-02-24 1978-02-24 Integrating circuit of time-limit relay

Publications (1)

Publication Number Publication Date
JPS54113051A true JPS54113051A (en) 1979-09-04

Family

ID=12006052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1968478A Pending JPS54113051A (en) 1978-02-24 1978-02-24 Integrating circuit of time-limit relay

Country Status (1)

Country Link
JP (1) JPS54113051A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148264A (en) * 1981-03-11 1982-09-13 Matsushita Electric Ind Co Ltd Zero-reset circuit
JPS60255007A (en) * 1984-05-30 1985-12-16 株式会社日立製作所 Anti-time circuit and overcurrent protection device using it
JPS6348119A (en) * 1986-08-13 1988-02-29 オムロン株式会社 Failure detecting circuit
JPH01174216A (en) * 1987-12-28 1989-07-10 Fujitsu Ten Ltd Disconnection detection device
JPH03173311A (en) * 1989-11-29 1991-07-26 Hikari Shoko Kk Self diagnosis system for ground relay unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57148264A (en) * 1981-03-11 1982-09-13 Matsushita Electric Ind Co Ltd Zero-reset circuit
JPS6322264B2 (en) * 1981-03-11 1988-05-11 Matsushita Electric Ind Co Ltd
JPS60255007A (en) * 1984-05-30 1985-12-16 株式会社日立製作所 Anti-time circuit and overcurrent protection device using it
JPH0520971B2 (en) * 1984-05-30 1993-03-23 Hitachi Ltd
JPS6348119A (en) * 1986-08-13 1988-02-29 オムロン株式会社 Failure detecting circuit
JPH01174216A (en) * 1987-12-28 1989-07-10 Fujitsu Ten Ltd Disconnection detection device
JPH03173311A (en) * 1989-11-29 1991-07-26 Hikari Shoko Kk Self diagnosis system for ground relay unit

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