JPS51113402A - Receiving amplification circuit for telephone - Google Patents

Receiving amplification circuit for telephone

Info

Publication number
JPS51113402A
JPS51113402A JP3825675A JP3825675A JPS51113402A JP S51113402 A JPS51113402 A JP S51113402A JP 3825675 A JP3825675 A JP 3825675A JP 3825675 A JP3825675 A JP 3825675A JP S51113402 A JPS51113402 A JP S51113402A
Authority
JP
Japan
Prior art keywords
telephone
amplification circuit
receiving amplification
receiving
power source
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
JP3825675A
Other languages
Japanese (ja)
Other versions
JPS5420362B2 (en
Inventor
Koichi Ooyama
Kunioki Oyagi
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP3825675A priority Critical patent/JPS51113402A/en
Publication of JPS51113402A publication Critical patent/JPS51113402A/en
Publication of JPS5420362B2 publication Critical patent/JPS5420362B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers

Landscapes

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

Abstract

PURPOSE:This reduces parts numbers and can transfer signals in a constant attenuation quantities even though the power source is off.
JP3825675A 1975-03-28 1975-03-28 Receiving amplification circuit for telephone Granted JPS51113402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3825675A JPS51113402A (en) 1975-03-28 1975-03-28 Receiving amplification circuit for telephone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3825675A JPS51113402A (en) 1975-03-28 1975-03-28 Receiving amplification circuit for telephone

Publications (2)

Publication Number Publication Date
JPS51113402A true JPS51113402A (en) 1976-10-06
JPS5420362B2 JPS5420362B2 (en) 1979-07-23

Family

ID=12520224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3825675A Granted JPS51113402A (en) 1975-03-28 1975-03-28 Receiving amplification circuit for telephone

Country Status (1)

Country Link
JP (1) JPS51113402A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54101912U (en) * 1977-12-27 1979-07-18
JPS60142655A (en) * 1983-12-15 1985-07-27 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Voide transmitting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54101912U (en) * 1977-12-27 1979-07-18
JPS60142655A (en) * 1983-12-15 1985-07-27 エヌ・ベー・フイリツプス・フルーイランペンフアブリケン Voide transmitting circuit

Also Published As

Publication number Publication date
JPS5420362B2 (en) 1979-07-23

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