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JPS575498A - Remote control relay - Google Patents

Remote control relay

Info

Publication number
JPS575498A
JPS575498A JP7932780A JP7932780A JPS575498A JP S575498 A JPS575498 A JP S575498A JP 7932780 A JP7932780 A JP 7932780A JP 7932780 A JP7932780 A JP 7932780A JP S575498 A JPS575498 A JP S575498A
Authority
JP
Japan
Prior art keywords
relay
diode
current
switching
remote control
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
JP7932780A
Other languages
Japanese (ja)
Other versions
JPS637515B2 (en
Inventor
Toshiyuki Masuda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7932780A priority Critical patent/JPS575498A/en
Publication of JPS575498A publication Critical patent/JPS575498A/en
Publication of JPS637515B2 publication Critical patent/JPS637515B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous ac

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To prolong the life of a relay contact, by burdening the switching of a large current to a switching diode. CONSTITUTION:In a remote control relay driving a remote relay with a local operating switch, when a selector switch is selected to the terminal 3, a voltage drop by a display lamp 19 is eliminated and the full voltage of an AC power supply 7 is applied across a resistor 15, then the base current of a transistor TR T1 rapidly increases and a drive current flows to a relay coil 9, and a diode switching circuit 14 is switched to a diode 13. Thus, the base current of the TR T1 is zero and the drive current of the relay coil 9 is also zero. In this case, a display lamp 18 illuminates and 19 distinguishes. Thus, the inversion of an output contact 17 of the relay 9 can be known at an operating switch 20 located at a remote point via a transmission line 8, and the current flowing to the relay contact can be reduced.
JP7932780A 1980-06-12 1980-06-12 Remote control relay Granted JPS575498A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7932780A JPS575498A (en) 1980-06-12 1980-06-12 Remote control relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7932780A JPS575498A (en) 1980-06-12 1980-06-12 Remote control relay

Publications (2)

Publication Number Publication Date
JPS575498A true JPS575498A (en) 1982-01-12
JPS637515B2 JPS637515B2 (en) 1988-02-17

Family

ID=13686785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7932780A Granted JPS575498A (en) 1980-06-12 1980-06-12 Remote control relay

Country Status (1)

Country Link
JP (1) JPS575498A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406128A (en) * 1989-09-22 1995-04-11 Mitsubishi Denki Kabushiki Kaisha Multicircuit control apparatus and control method therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5406128A (en) * 1989-09-22 1995-04-11 Mitsubishi Denki Kabushiki Kaisha Multicircuit control apparatus and control method therefor

Also Published As

Publication number Publication date
JPS637515B2 (en) 1988-02-17

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