JPH0566059B2 - - Google Patents

Info

Publication number
JPH0566059B2
JPH0566059B2 JP56010246A JP1024681A JPH0566059B2 JP H0566059 B2 JPH0566059 B2 JP H0566059B2 JP 56010246 A JP56010246 A JP 56010246A JP 1024681 A JP1024681 A JP 1024681A JP H0566059 B2 JPH0566059 B2 JP H0566059B2
Authority
JP
Japan
Prior art keywords
voltage
current
circuit
load
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
JP56010246A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57125421A (en
Inventor
Michio Tokunaga
Junjiro Kitano
Akio Sagawa
Toshio Hayashi
Kazuo Hamasato
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
Nippon Telegraph and Telephone Corp
Original Assignee
Hitachi Ltd
Nippon Telegraph and Telephone 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
Application filed by Hitachi Ltd, Nippon Telegraph and Telephone Corp filed Critical Hitachi Ltd
Priority to JP1024681A priority Critical patent/JPS57125421A/ja
Priority to EP82100516A priority patent/EP0057009B1/en
Priority to US06/342,791 priority patent/US4465967A/en
Priority to DE8282100516T priority patent/DE3264466D1/de
Priority to CA000395064A priority patent/CA1175898A/en
Publication of JPS57125421A publication Critical patent/JPS57125421A/ja
Publication of JPH0566059B2 publication Critical patent/JPH0566059B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of DC power input into DC power output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP1024681A 1981-01-28 1981-01-28 Current supply circuit Granted JPS57125421A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1024681A JPS57125421A (en) 1981-01-28 1981-01-28 Current supply circuit
EP82100516A EP0057009B1 (en) 1981-01-28 1982-01-26 Current supply circuit
US06/342,791 US4465967A (en) 1981-01-28 1982-01-26 Current supply circuit
DE8282100516T DE3264466D1 (en) 1981-01-28 1982-01-26 Current supply circuit
CA000395064A CA1175898A (en) 1981-01-28 1982-01-27 Current supply circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1024681A JPS57125421A (en) 1981-01-28 1981-01-28 Current supply circuit

Publications (2)

Publication Number Publication Date
JPS57125421A JPS57125421A (en) 1982-08-04
JPH0566059B2 true JPH0566059B2 (enrdf_load_stackoverflow) 1993-09-21

Family

ID=11744944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1024681A Granted JPS57125421A (en) 1981-01-28 1981-01-28 Current supply circuit

Country Status (1)

Country Link
JP (1) JPS57125421A (enrdf_load_stackoverflow)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399821A (en) * 1977-02-14 1978-08-31 Hitachi Ltd Switching regulator

Also Published As

Publication number Publication date
JPS57125421A (en) 1982-08-04

Similar Documents

Publication Publication Date Title
CA1177986A (en) Balanced current multiplier circuit for a subscriber loop interface circuit
JPH0695715B2 (ja) Dc電圧供給回路
US5444777A (en) Battery feed for telephone line cards
JPS6292559A (ja) 電話回路
JP2908449B2 (ja) 電流特性整形回路
US4549129A (en) Regulator circuit
JPS643387B2 (enrdf_load_stackoverflow)
JPH0566059B2 (enrdf_load_stackoverflow)
US4588860A (en) Battery feed circuit for telephone subscriber line
US4439637A (en) Low loop current switch latch circuit
KR930002108B1 (ko) 전화기용 전원회로
US4358645A (en) Loop sensing circuit for use with a subscriber loop interface circuit
US6563924B1 (en) Subscriber matching circuit for electronic exchange
JPS61214655A (ja) 定電流ライン回路
US4562525A (en) DC Power supply circuit for line interface circuits
US20050220293A1 (en) Subscriber loop interface circuitry with tracking battery supply
JPS6333755B2 (enrdf_load_stackoverflow)
JPS615669A (ja) 加入者回路の定電流給電回路
JP3917402B2 (ja) 電力供給回路
CA1313432C (en) Speaker drive arrangement for loudspeaker telephone
JPS637703B2 (enrdf_load_stackoverflow)
JPH0360222B2 (enrdf_load_stackoverflow)
JPH0210664Y2 (enrdf_load_stackoverflow)
JP2891782B2 (ja) 電話インタフェース回路用出力段
JPS611159A (ja) 加入者回路の定電流給電回路