EP0392761A3 - Operation display apparatus for electromagnetic relay - Google Patents

Operation display apparatus for electromagnetic relay Download PDF

Info

Publication number
EP0392761A3
EP0392761A3 EP19900303752 EP90303752A EP0392761A3 EP 0392761 A3 EP0392761 A3 EP 0392761A3 EP 19900303752 EP19900303752 EP 19900303752 EP 90303752 A EP90303752 A EP 90303752A EP 0392761 A3 EP0392761 A3 EP 0392761A3
Authority
EP
European Patent Office
Prior art keywords
operation display
display apparatus
display circuit
electromagnetic relay
primary coil
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.)
Granted
Application number
EP19900303752
Other languages
German (de)
French (fr)
Other versions
EP0392761B1 (en
EP0392761A2 (en
Inventor
Hideaki Tsuji
Seiji Matsuo
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.)
OFFERTA DI LICENZA AL PUBBLICO;AL PUBBLICO
Original Assignee
Omron Corp
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
Priority claimed from JP9608489A external-priority patent/JPH02273429A/en
Priority claimed from JP10162289U external-priority patent/JPH0339804U/ja
Application filed by Omron Corp filed Critical Omron Corp
Publication of EP0392761A2 publication Critical patent/EP0392761A2/en
Publication of EP0392761A3 publication Critical patent/EP0392761A3/en
Application granted granted Critical
Publication of EP0392761B1 publication Critical patent/EP0392761B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/161—Indicators for switching condition, e.g. "on" or "off" comprising light emitting elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/08—Indicators; Distinguishing marks

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

An operation display apparatus for an electromag­ netic relay, wherein the division voltage corresponding to the impedance ratio between the primary coil and the secondary coil is applied upon the operation display circuit so as to effect the display operation, and when the primary coil is disconnected, the operation display circuit does not operate, because the current does not flow even into the secondary coil, and the brightness of the light emitting element of the operation display circuit changes, because the voltage to be applied upon the operation display circuit changes.
EP19900303752 1989-04-14 1990-04-09 Operation display apparatus for electromagnetic relay Expired - Lifetime EP0392761B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP9608489A JPH02273429A (en) 1989-04-14 1989-04-14 Operation display device for solenoid relay
JP96084/89 1989-04-14
JP10162289U JPH0339804U (en) 1989-08-30 1989-08-30
JP101622/89U 1989-08-30

Publications (3)

Publication Number Publication Date
EP0392761A2 EP0392761A2 (en) 1990-10-17
EP0392761A3 true EP0392761A3 (en) 1991-09-25
EP0392761B1 EP0392761B1 (en) 1995-07-05

Family

ID=26437327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900303752 Expired - Lifetime EP0392761B1 (en) 1989-04-14 1990-04-09 Operation display apparatus for electromagnetic relay

Country Status (2)

Country Link
EP (1) EP0392761B1 (en)
DE (1) DE69020618T2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR905494A (en) * 1944-02-14 1945-12-05 Delle Atel Const Electr Signaling device, particularly applicable to electrical contactors
US4347493A (en) * 1977-02-28 1982-08-31 Emhart Industries, Inc. Coil assembly
EP0308547A2 (en) * 1987-09-25 1989-03-29 FINDER S.p.A. Electromagnetic relay with light signalling device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR905494A (en) * 1944-02-14 1945-12-05 Delle Atel Const Electr Signaling device, particularly applicable to electrical contactors
US4347493A (en) * 1977-02-28 1982-08-31 Emhart Industries, Inc. Coil assembly
EP0308547A2 (en) * 1987-09-25 1989-03-29 FINDER S.p.A. Electromagnetic relay with light signalling device

Also Published As

Publication number Publication date
EP0392761B1 (en) 1995-07-05
EP0392761A2 (en) 1990-10-17
DE69020618D1 (en) 1995-08-10
DE69020618T2 (en) 1996-03-21

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