JPH0259677B2 - - Google Patents

Info

Publication number
JPH0259677B2
JPH0259677B2 JP8708683A JP8708683A JPH0259677B2 JP H0259677 B2 JPH0259677 B2 JP H0259677B2 JP 8708683 A JP8708683 A JP 8708683A JP 8708683 A JP8708683 A JP 8708683A JP H0259677 B2 JPH0259677 B2 JP H0259677B2
Authority
JP
Japan
Prior art keywords
voltage
load
current
power supply
circuit
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
JP8708683A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59212099A (ja
Inventor
Tomoshiro Oota
Kazuo Saito
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.)
Nippon Telegraph and Telephone Corp
Sanken Electric Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Sanken Electric Co 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 Nippon Telegraph and Telephone Corp, Sanken Electric Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP58087086A priority Critical patent/JPS59212099A/ja
Publication of JPS59212099A publication Critical patent/JPS59212099A/ja
Publication of JPH0259677B2 publication Critical patent/JPH0259677B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
JP58087086A 1983-05-17 1983-05-17 直流供給及び監視回路 Granted JPS59212099A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58087086A JPS59212099A (ja) 1983-05-17 1983-05-17 直流供給及び監視回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58087086A JPS59212099A (ja) 1983-05-17 1983-05-17 直流供給及び監視回路

Publications (2)

Publication Number Publication Date
JPS59212099A JPS59212099A (ja) 1984-11-30
JPH0259677B2 true JPH0259677B2 (de) 1990-12-13

Family

ID=13905133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58087086A Granted JPS59212099A (ja) 1983-05-17 1983-05-17 直流供給及び監視回路

Country Status (1)

Country Link
JP (1) JPS59212099A (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623090A (en) * 1979-07-31 1981-03-04 Mitel Corp Telephone line circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5623090A (en) * 1979-07-31 1981-03-04 Mitel Corp Telephone line circuit

Also Published As

Publication number Publication date
JPS59212099A (ja) 1984-11-30

Similar Documents

Publication Publication Date Title
GB2119102A (en) Load impedance detector for audio power amplifiers
US4406929A (en) Hook status detector for a subscriber loop interface circuit
GB2093645A (en) Power saving line circuit
JPH0533851B2 (de)
US3786200A (en) Amplifier for use in communication systems
JPH0259677B2 (de)
US4800586A (en) Compensation circuit for use with an integrating amplifier
US4631362A (en) Low resistance origination scan circuit
JPH0714129B2 (ja) 電力増幅器の最終段の保護装置
WO1990009703A1 (en) Amplifier arrangement and communication line circuit using same
JPH04295222A (ja) 安定化電源回路
EP1222803B1 (de) Vorrichtung in einer teilnehmeranschlussschaltung
KR0123180Y1 (ko) 전화라인의 점유상태 검출장치
KR920004338Y1 (ko) 음성다중 id 신호 검출 및 제어회로
US5336987A (en) Voltage stabilizing circuit of switching power supply circuit
JPS647336Y2 (de)
JPH01169371A (ja) 電圧電流制御回路
JP2675431B2 (ja) 負荷駆動回路
JPH0453346B2 (de)
JP2916180B2 (ja) 加入者線ループ監視方式
JPH07193618A (ja) オフフック検出回路
JPH05145957A (ja) 加入者回路
JPS59127500A (ja) 加入者回路
JPH04244778A (ja) 過電流検出回路
JPH0216042B2 (de)