JPS6141258A - 電話機 - Google Patents

電話機

Info

Publication number
JPS6141258A
JPS6141258A JP16184584A JP16184584A JPS6141258A JP S6141258 A JPS6141258 A JP S6141258A JP 16184584 A JP16184584 A JP 16184584A JP 16184584 A JP16184584 A JP 16184584A JP S6141258 A JPS6141258 A JP S6141258A
Authority
JP
Japan
Prior art keywords
circuit
power supply
voltage
amplifier
telephone
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
JP16184584A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0242265B2 (enrdf_load_stackoverflow
Inventor
Atsumi Sasaguchi
篤実 笹口
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16184584A priority Critical patent/JPS6141258A/ja
Publication of JPS6141258A publication Critical patent/JPS6141258A/ja
Publication of JPH0242265B2 publication Critical patent/JPH0242265B2/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)
JP16184584A 1984-08-01 1984-08-01 電話機 Granted JPS6141258A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16184584A JPS6141258A (ja) 1984-08-01 1984-08-01 電話機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16184584A JPS6141258A (ja) 1984-08-01 1984-08-01 電話機

Publications (2)

Publication Number Publication Date
JPS6141258A true JPS6141258A (ja) 1986-02-27
JPH0242265B2 JPH0242265B2 (enrdf_load_stackoverflow) 1990-09-21

Family

ID=15743033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16184584A Granted JPS6141258A (ja) 1984-08-01 1984-08-01 電話機

Country Status (1)

Country Link
JP (1) JPS6141258A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03261552A (ja) * 1990-03-12 1991-11-21 Nippon Steel Corp 防汚性に優れた耐海水用鋼材

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149907U (enrdf_load_stackoverflow) * 1974-10-11 1976-04-15

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5149907U (enrdf_load_stackoverflow) * 1974-10-11 1976-04-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03261552A (ja) * 1990-03-12 1991-11-21 Nippon Steel Corp 防汚性に優れた耐海水用鋼材

Also Published As

Publication number Publication date
JPH0242265B2 (enrdf_load_stackoverflow) 1990-09-21

Similar Documents

Publication Publication Date Title
US4455677A (en) Multipurpose headphone assembly
EP0738047B1 (en) Portable radio telephone device
US4025728A (en) Speaker telephone
JPS6141258A (ja) 電話機
JP3061733B2 (ja) 同時通話インターホン装置
CA1167988A (en) Line powered transformerless loudspeaking telephone
JPS6336757Y2 (enrdf_load_stackoverflow)
US3909548A (en) Speaker telephone
US4088836A (en) Acoustically responsive signal injection system for headphone users
US3818140A (en) Telephone line receiver and transmitter
JPS62172853A (ja) 防側音回路
JP2789997B2 (ja) 電話装置
KR910003391B1 (ko) 반이중 음성 송수신회로
JPH0358223B2 (enrdf_load_stackoverflow)
KR830001580B1 (ko) 확성전화기의 음성용 트랜스레스 2선식 동시통화장치
JPS5919493Y2 (ja) 入出力分離回路
KR950004457Y1 (ko) 통화선택기능을 갖는 전화기용 아답타
JPH0238539Y2 (enrdf_load_stackoverflow)
JPH01143528A (ja) インターホン装置
JPS6226216B2 (enrdf_load_stackoverflow)
JPS61287362A (ja) ハウリング防止回路
JPS59111425A (ja) 会議電話装置
JPS63110854A (ja) 電話機
JPH098923A (ja) 端末間送受信方式
JPH0241226B2 (enrdf_load_stackoverflow)