JPS6074858A - 電話機の送話増幅器回路 - Google Patents

電話機の送話増幅器回路

Info

Publication number
JPS6074858A
JPS6074858A JP18259683A JP18259683A JPS6074858A JP S6074858 A JPS6074858 A JP S6074858A JP 18259683 A JP18259683 A JP 18259683A JP 18259683 A JP18259683 A JP 18259683A JP S6074858 A JPS6074858 A JP S6074858A
Authority
JP
Japan
Prior art keywords
transistor
amplifier
terminal
trs
preamplifier
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
JP18259683A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0239908B2 (enExample
Inventor
Michio Hara
原　道夫
Kaneyuki Nishihara
西原　兼幸
Tatsuhiro Osanawa
長繩　達博
Yutaka Nishino
豊 西野
Makoto Yoshitoshi
吉利　誠
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP18259683A priority Critical patent/JPS6074858A/ja
Publication of JPS6074858A publication Critical patent/JPS6074858A/ja
Publication of JPH0239908B2 publication Critical patent/JPH0239908B2/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
    • H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP18259683A 1983-09-30 1983-09-30 電話機の送話増幅器回路 Granted JPS6074858A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18259683A JPS6074858A (ja) 1983-09-30 1983-09-30 電話機の送話増幅器回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18259683A JPS6074858A (ja) 1983-09-30 1983-09-30 電話機の送話増幅器回路

Publications (2)

Publication Number Publication Date
JPS6074858A true JPS6074858A (ja) 1985-04-27
JPH0239908B2 JPH0239908B2 (enExample) 1990-09-07

Family

ID=16121047

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18259683A Granted JPS6074858A (ja) 1983-09-30 1983-09-30 電話機の送話増幅器回路

Country Status (1)

Country Link
JP (1) JPS6074858A (enExample)

Also Published As

Publication number Publication date
JPH0239908B2 (enExample) 1990-09-07

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