JPH0320958B2 - - Google Patents

Info

Publication number
JPH0320958B2
JPH0320958B2 JP20012882A JP20012882A JPH0320958B2 JP H0320958 B2 JPH0320958 B2 JP H0320958B2 JP 20012882 A JP20012882 A JP 20012882A JP 20012882 A JP20012882 A JP 20012882A JP H0320958 B2 JPH0320958 B2 JP H0320958B2
Authority
JP
Japan
Prior art keywords
voltage
power supply
current
loop current
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.)
Expired - Lifetime
Application number
JP20012882A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5990455A (ja
Inventor
Shinichi Ito
Mitsutoshi Ayano
Kenji Takato
Yoshito Takeda
Toshiro Tojo
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 JP57200128A priority Critical patent/JPS5990455A/ja
Publication of JPS5990455A publication Critical patent/JPS5990455A/ja
Publication of JPH0320958B2 publication Critical patent/JPH0320958B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Meter Arrangements (AREA)
JP57200128A 1982-11-15 1982-11-15 サイレントレバ−ス制御回路 Granted JPS5990455A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57200128A JPS5990455A (ja) 1982-11-15 1982-11-15 サイレントレバ−ス制御回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57200128A JPS5990455A (ja) 1982-11-15 1982-11-15 サイレントレバ−ス制御回路

Publications (2)

Publication Number Publication Date
JPS5990455A JPS5990455A (ja) 1984-05-24
JPH0320958B2 true JPH0320958B2 (it) 1991-03-20

Family

ID=16419275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57200128A Granted JPS5990455A (ja) 1982-11-15 1982-11-15 サイレントレバ−ス制御回路

Country Status (1)

Country Link
JP (1) JPS5990455A (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0420164A (ja) * 1990-05-15 1992-01-23 Matsushita Electric Works Ltd 報知制御装置

Also Published As

Publication number Publication date
JPS5990455A (ja) 1984-05-24

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