JPS6444737U - - Google Patents

Info

Publication number
JPS6444737U
JPS6444737U JP13869687U JP13869687U JPS6444737U JP S6444737 U JPS6444737 U JP S6444737U JP 13869687 U JP13869687 U JP 13869687U JP 13869687 U JP13869687 U JP 13869687U JP S6444737 U JPS6444737 U JP S6444737U
Authority
JP
Japan
Prior art keywords
circuit
transmitter
telephone
input
audio
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
JP13869687U
Other languages
Japanese (ja)
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 JP13869687U priority Critical patent/JPS6444737U/ja
Publication of JPS6444737U publication Critical patent/JPS6444737U/ja
Pending legal-status Critical Current

Links

Description

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

第1図はこの考案の一実施例の概略ブロツク図
である。 図において、1は送話器、2はスイツチング回
路、3は帯域増幅回路、4は整流・直流増幅回路
を示す。
FIG. 1 is a schematic block diagram of an embodiment of this invention. In the figure, 1 is a transmitter, 2 is a switching circuit, 3 is a band amplification circuit, and 4 is a rectification/DC amplification circuit.

Claims (1)

【実用新案登録請求の範囲】 送話を停止したとき、送話器の音声入力を制限
するようにした電話機の音声入力制御回路であつ
て、 前記送話器の出力信号のうち、所定の帯域幅の
音声信号を帯域増幅する帯域増幅回路と、 前記帯域増幅回路の出力を整流して直流化し、
その直流信号を増幅する整流・直流増幅回路と、 前記整流・直流増幅回路の出力レベルが予め定
めるレベル以下のとき、前記送話器から出力され
た音声入力信号が前記電話機本体へ入力されるの
を遮断し、前記整流・直流増幅回路の出力レベル
が予め定めるレベル以上のとき、前記送話器から
出力された音声入力信号が前記電話機本体へ入力
されるのを許容するスイツチング回路とを備えた
、電話機の音声入力制御回路。
[Scope of Claim for Utility Model Registration] An audio input control circuit for a telephone that limits audio input to a transmitter when transmission is stopped, the circuit comprising: a band amplification circuit that band-amplifies an audio signal with a width of
a rectifying/DC amplifying circuit that amplifies the direct current signal; and when the output level of the rectifying/DC amplifying circuit is below a predetermined level, the audio input signal output from the transmitter is input to the telephone main body. and a switching circuit that allows the voice input signal output from the transmitter to be input to the telephone main body when the output level of the rectifier/DC amplifier circuit is equal to or higher than a predetermined level. , telephone voice input control circuit.
JP13869687U 1987-09-10 1987-09-10 Pending JPS6444737U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13869687U JPS6444737U (en) 1987-09-10 1987-09-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13869687U JPS6444737U (en) 1987-09-10 1987-09-10

Publications (1)

Publication Number Publication Date
JPS6444737U true JPS6444737U (en) 1989-03-17

Family

ID=31401274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13869687U Pending JPS6444737U (en) 1987-09-10 1987-09-10

Country Status (1)

Country Link
JP (1) JPS6444737U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109419U (en) * 1991-03-05 1992-09-22 ナイルス部品株式会社 fan motor control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04109419U (en) * 1991-03-05 1992-09-22 ナイルス部品株式会社 fan motor control device

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