[go: up one dir, main page]

JPS52150904A - Overlapping circuit of b board - Google Patents

Overlapping circuit of b board

Info

Publication number
JPS52150904A
JPS52150904A JP6765476A JP6765476A JPS52150904A JP S52150904 A JPS52150904 A JP S52150904A JP 6765476 A JP6765476 A JP 6765476A JP 6765476 A JP6765476 A JP 6765476A JP S52150904 A JPS52150904 A JP S52150904A
Authority
JP
Japan
Prior art keywords
board
overlapping circuit
circuit
overlapping
bboard
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.)
Pending
Application number
JP6765476A
Other languages
Japanese (ja)
Inventor
Tatsumasa Onuma
Kiyohiko Abe
Taiji Uehara
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
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP6765476A priority Critical patent/JPS52150904A/en
Priority to AU26080/77A priority patent/AU496048B2/en
Publication of JPS52150904A publication Critical patent/JPS52150904A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To increase the mounting space efficiency for Bboard through elimination of the hybrid transformer by providing an operational amplifier to the reciver circuit.
JP6765476A 1976-06-11 1976-06-11 Overlapping circuit of b board Pending JPS52150904A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6765476A JPS52150904A (en) 1976-06-11 1976-06-11 Overlapping circuit of b board
AU26080/77A AU496048B2 (en) 1977-06-14 Receiving circuit foran attendant board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6765476A JPS52150904A (en) 1976-06-11 1976-06-11 Overlapping circuit of b board

Publications (1)

Publication Number Publication Date
JPS52150904A true JPS52150904A (en) 1977-12-15

Family

ID=13351216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6765476A Pending JPS52150904A (en) 1976-06-11 1976-06-11 Overlapping circuit of b board

Country Status (1)

Country Link
JP (1) JPS52150904A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948211A (en) * 1972-09-14 1974-05-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4948211A (en) * 1972-09-14 1974-05-10

Similar Documents

Publication Publication Date Title
JPS51121239A (en) An amplification circuit
JPS5230146A (en) Amplifier circuit
JPS52150904A (en) Overlapping circuit of b board
JPS52150906A (en) Overlapping circuit of b board
JPS522723A (en) Oscillation plate for speaker
JPS52136503A (en) Noise suppession circuit
JPS52143709A (en) Signal synthesizing circuit
JPS52112258A (en) Active load circuit
JPS5412243A (en) Cable equializer circuit
JPS545644A (en) Amplifier circuit
JPS52126109A (en) Line signal watch circuit
JPS5425781A (en) Light receiving apparatus
JPS5324212A (en) Mul ti-frequency receiver
JPS538553A (en) Division circuit
JPS5224414A (en) Heterodyne relay system
JPS5421212A (en) Band selection circuit
JPS5376285A (en) Tele-controlling system
JPS5254311A (en) Receiver
JPS543414A (en) Gain control system
JPS5220714A (en) Receiving band switching equipment
JPS52130218A (en) Multi frequency signal transmission circuit
JPS5374820A (en) Block-based repeating amplification system for carrier contril system
JPS5233050A (en) Panel board
JPS52140206A (en) Connection system of operator.s board
JPS51113406A (en) Repeater