JPS643354U - - Google Patents

Info

Publication number
JPS643354U
JPS643354U JP9821487U JP9821487U JPS643354U JP S643354 U JPS643354 U JP S643354U JP 9821487 U JP9821487 U JP 9821487U JP 9821487 U JP9821487 U JP 9821487U JP S643354 U JPS643354 U JP S643354U
Authority
JP
Japan
Prior art keywords
call
adjusting
telephone set
telephone
speaker
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
JP9821487U
Other languages
Japanese (ja)
Other versions
JPH0445323Y2 (en
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 filed Critical
Priority to JP1987098214U priority Critical patent/JPH0445323Y2/ja
Publication of JPS643354U publication Critical patent/JPS643354U/ja
Application granted granted Critical
Publication of JPH0445323Y2 publication Critical patent/JPH0445323Y2/ja
Expired legal-status Critical Current

Links

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の概略を示し、第２図は従来の
回路の概略を示す。 １……電話回線、２……ブリツジ回路、３……
抵抗、４……コンデンサ、５……ＡＧＣ、６……
アンプ、７……スピーカ、８……マイク、１０…
…リンガー回路、１５……トランジスタ、１８…
…電界効果トランジスタ。 FIG. 1 shows an outline of the present invention, and FIG. 2 shows an outline of a conventional circuit. 1... Telephone line, 2... Bridge circuit, 3...
Resistor, 4... Capacitor, 5... AGC, 6...
Amplifier, 7... Speaker, 8... Microphone, 10...
...Ringer circuit, 15...Transistor, 18...
...field effect transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電話機のスピーカの入力部に設けられた入力を
調整する手段と電話機の通話開始のときおよび通
話終了のとき前記の調整手段の動作を制御する手
段とを備えた電話機のハウリング防止回路。 A howling prevention circuit for a telephone set, comprising means for adjusting an input provided at an input section of a speaker of the telephone set, and means for controlling the operation of said adjusting means at the start of a telephone call and at the end of a call.
JP1987098214U 1987-06-25 1987-06-25 Expired JPH0445323Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987098214U JPH0445323Y2 (en) 1987-06-25 1987-06-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987098214U JPH0445323Y2 (en) 1987-06-25 1987-06-25

Publications (2)

Publication Number Publication Date
JPS643354U true JPS643354U (en) 1989-01-10
JPH0445323Y2 JPH0445323Y2 (en) 1992-10-26

Family

ID=31324278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987098214U Expired JPH0445323Y2 (en) 1987-06-25 1987-06-25

Country Status (1)

Country Link
JP (1) JPH0445323Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH065488U (en) * 1992-06-25 1994-01-25 和江 遠藤 Nigiri rice wrapped in film

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54114011A (en) * 1978-02-24 1979-09-05 Toshiba Corp Loudspeaker telephone device
JPS61128858U (en) * 1985-01-31 1986-08-12
JPS61198949A (en) * 1985-02-28 1986-09-03 Toshiba Corp Telephone set with reception loudspeaking function
JPS61284150A (en) * 1985-06-11 1986-12-15 Matsushita Electric Ind Co Ltd public address telephone

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54114011A (en) * 1978-02-24 1979-09-05 Toshiba Corp Loudspeaker telephone device
JPS61128858U (en) * 1985-01-31 1986-08-12
JPS61198949A (en) * 1985-02-28 1986-09-03 Toshiba Corp Telephone set with reception loudspeaking function
JPS61284150A (en) * 1985-06-11 1986-12-15 Matsushita Electric Ind Co Ltd public address telephone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH065488U (en) * 1992-06-25 1994-01-25 和江 遠藤 Nigiri rice wrapped in film

Also Published As

Publication number Publication date
JPH0445323Y2 (en) 1992-10-26

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