JPS56143784A - Switching type trunk circuit - Google Patents

Switching type trunk circuit

Info

Publication number
JPS56143784A
JPS56143784A JP4665180A JP4665180A JPS56143784A JP S56143784 A JPS56143784 A JP S56143784A JP 4665180 A JP4665180 A JP 4665180A JP 4665180 A JP4665180 A JP 4665180A JP S56143784 A JPS56143784 A JP S56143784A
Authority
JP
Japan
Prior art keywords
current
switching
trunk
circuit
repetitive
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
JP4665180A
Other languages
Japanese (ja)
Other versions
JPS6317276B2 (en
Inventor
Yoshihiko Katsura
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4665180A priority Critical patent/JPS56143784A/en
Publication of JPS56143784A publication Critical patent/JPS56143784A/en
Publication of JPS6317276B2 publication Critical patent/JPS6317276B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

PURPOSE:To effectively utilize electric power through suppressing heat generation in a switching type trunk circuit, by controlling a trunk current through detecting said current and comparing the trunk circuit with a repetitive reference waveform. CONSTITUTION:Electric power supplied from a party station is consumed by load 205 via switching TR204. As a result, the output of current detecting circuit 203 varies in level and is compared with a repetitive input waveform by comparator 202. The comparator output becomes the repetitive intermittent waveform that corresponds to the current value consumed by load 205, and is applied to switching TR204 via driving circuit 201. Consequently, the negative feedback circuit corresponding to the current of switching TR204 is constituted, so that the DC current value flowing through the trunk can be controlled.
JP4665180A 1980-04-09 1980-04-09 Switching type trunk circuit Granted JPS56143784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4665180A JPS56143784A (en) 1980-04-09 1980-04-09 Switching type trunk circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4665180A JPS56143784A (en) 1980-04-09 1980-04-09 Switching type trunk circuit

Publications (2)

Publication Number Publication Date
JPS56143784A true JPS56143784A (en) 1981-11-09
JPS6317276B2 JPS6317276B2 (en) 1988-04-13

Family

ID=12753211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4665180A Granted JPS56143784A (en) 1980-04-09 1980-04-09 Switching type trunk circuit

Country Status (1)

Country Link
JP (1) JPS56143784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933995A (en) * 1982-07-16 1984-02-24 ジ−メンス・アクチエンゲゼルシヤフト Dc signal generator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098214A (en) * 1973-12-26 1975-08-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5098214A (en) * 1973-12-26 1975-08-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933995A (en) * 1982-07-16 1984-02-24 ジ−メンス・アクチエンゲゼルシヤフト Dc signal generator

Also Published As

Publication number Publication date
JPS6317276B2 (en) 1988-04-13

Similar Documents

Publication Publication Date Title
ES8800523A1 (en) Dc to dc converter.
ES8401296A1 (en) Switched-mode self-oscillating supply voltage circuit.
IE790306L (en) Circuit for controlling the electrical power supplied to a¹load
JPS56143784A (en) Switching type trunk circuit
JPS5646695A (en) Circuit for exciting pulse motor
JPS5752922A (en) Electron controlling method for ac power
JPS5762630A (en) Control circuit device
JPS57177281A (en) Power supplying method using converter
JPS6423768A (en) Dc and ac power circuit unit
JPS5487839A (en) Dc voltage stabilizer
JPS5775599A (en) Voltage regulator for magne type generator
JPS56107782A (en) Switching power source
JPS55148480A (en) Laser device
JPS6420000A (en) Voltage regulator
JPS5720824A (en) Regulated power supply circuit
ATE92685T1 (en) ELECTRONIC SWITCHING POWER SUPPLY WITH A CHOCK CONVERTER.
JPS56166771A (en) Controlling method for output of dc power source
GB2019138A (en) Method and apparatus for controlling the supply of power to loads from a limited electricity supply
JPS57199472A (en) Controlling rectifying circuit
JPS57138526A (en) Electrification machining device
JPS5641767A (en) Dc-dc converter
JPS56120252A (en) Current supply circuit
FR2256578A1 (en) DC to AC converter with transformer - has switching transistors and storage inductances and diodes
JPS5710821A (en) Constant voltage power supply circuit
JPS6430439A (en) Cooling fan control circuit