JPS52150906A - Overlapping circuit of b board - Google Patents

Overlapping circuit of b board

Info

Publication number
JPS52150906A
JPS52150906A JP6765676A JP6765676A JPS52150906A JP S52150906 A JPS52150906 A JP S52150906A JP 6765676 A JP6765676 A JP 6765676A JP 6765676 A JP6765676 A JP 6765676A JP S52150906 A JPS52150906 A JP S52150906A
Authority
JP
Japan
Prior art keywords
board
overlapping circuit
circuit
overlapping
eliminate
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
JP6765676A
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 JP6765676A priority Critical patent/JPS52150906A/en
Priority to AU26080/77A priority patent/AU496048B2/en
Publication of JPS52150906A publication Critical patent/JPS52150906A/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)
  • Amplifiers (AREA)

Abstract

PURPOSE:To eliminate the hybrid transformer by providing operational amplifiers at the receiver circuit, and thus to increase the mounting space efficiency for the B board.
JP6765676A 1976-06-11 1976-06-11 Overlapping circuit of b board Pending JPS52150906A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6765676A JPS52150906A (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
JP6765676A JPS52150906A (en) 1976-06-11 1976-06-11 Overlapping circuit of b board

Publications (1)

Publication Number Publication Date
JPS52150906A true JPS52150906A (en) 1977-12-15

Family

ID=13351268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6765676A Pending JPS52150906A (en) 1976-06-11 1976-06-11 Overlapping circuit of b board

Country Status (1)

Country Link
JP (1) JPS52150906A (en)

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