JPS637499B2 - - Google Patents

Info

Publication number
JPS637499B2
JPS637499B2 JP4215880A JP4215880A JPS637499B2 JP S637499 B2 JPS637499 B2 JP S637499B2 JP 4215880 A JP4215880 A JP 4215880A JP 4215880 A JP4215880 A JP 4215880A JP S637499 B2 JPS637499 B2 JP S637499B2
Authority
JP
Japan
Prior art keywords
voltage
circuit
line
output
current
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
Application number
JP4215880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56140764A (en
Inventor
Kazuo Hamasato
Shogo Usuda
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
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP4215880A priority Critical patent/JPS56140764A/ja
Publication of JPS56140764A publication Critical patent/JPS56140764A/ja
Publication of JPS637499B2 publication Critical patent/JPS637499B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/001Current supply source at the exchanger providing current to substations
    • H04M19/006Circuits for increasing the range of current supply source

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP4215880A 1980-04-01 1980-04-01 Supply system of line current Granted JPS56140764A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4215880A JPS56140764A (en) 1980-04-01 1980-04-01 Supply system of line current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4215880A JPS56140764A (en) 1980-04-01 1980-04-01 Supply system of line current

Publications (2)

Publication Number Publication Date
JPS56140764A JPS56140764A (en) 1981-11-04
JPS637499B2 true JPS637499B2 (enrdf_load_stackoverflow) 1988-02-17

Family

ID=12628136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4215880A Granted JPS56140764A (en) 1980-04-01 1980-04-01 Supply system of line current

Country Status (1)

Country Link
JP (1) JPS56140764A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS56140764A (en) 1981-11-04

Similar Documents

Publication Publication Date Title
US7276886B2 (en) Dual buck-boost converter with single inductor
CN112928800B (zh) 充电电路及其充电系统
EP3685501A1 (en) Limiting average current in a peak-controlled boost converter
EP2234255A1 (en) Controller for switching regulator, switching regulator and light source
US6534960B1 (en) Multi-channel interleaved power converter with current sharing
KR100561945B1 (ko) 벅 부스트 스위칭 조정기
NZ195746A (en) Telephone subscriber line feeding circuits
CN104852568B (zh) 基于Cuk的电流源
KR880000870B1 (ko) 전원회로
EP1331720B1 (en) Programmable dual mode hysteretic power output controller
EP0190110B1 (en) Voltage convertor for telephone terminal equipment
CA1159975A (en) Communication system signaling circuit
EP0013102B1 (en) Power supply providing constant power output
US4263644A (en) Current limiter for switched DC-to-DC converter
US8462937B2 (en) Power supply with digital control loop
WO1999063745A1 (en) Method and arrangement for choosing supply voltage
JPS637499B2 (enrdf_load_stackoverflow)
US11848607B2 (en) Simple constant current limit for SEPIC or boost converter
JPS637497B2 (enrdf_load_stackoverflow)
JPS637498B2 (enrdf_load_stackoverflow)
US20120002800A1 (en) Subscriber Line Interface Circuit with DC-DC Converter Current Protection
US7688119B2 (en) Power supply with digital control loop
CA2067535C (en) Current limited subscriber interface circuit
JPS6046911B2 (ja) 回線電流供給方式
CA2097448C (en) Signal separation circuit