JPS6137637U - Mute circuit - Google Patents

Mute circuit

Info

Publication number
JPS6137637U
JPS6137637U JP12290184U JP12290184U JPS6137637U JP S6137637 U JPS6137637 U JP S6137637U JP 12290184 U JP12290184 U JP 12290184U JP 12290184 U JP12290184 U JP 12290184U JP S6137637 U JPS6137637 U JP S6137637U
Authority
JP
Japan
Prior art keywords
circuit
mute
audio
switch
audio amplification
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
JP12290184U
Other languages
Japanese (ja)
Other versions
JPH026690Y2 (en
Inventor
秀幸 萩原
Original Assignee
日立電子株式会社
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 日立電子株式会社 filed Critical 日立電子株式会社
Priority to JP12290184U priority Critical patent/JPS6137637U/en
Publication of JPS6137637U publication Critical patent/JPS6137637U/en
Application granted granted Critical
Publication of JPH026690Y2 publication Critical patent/JPH026690Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Noise Elimination (AREA)
  • Amplifiers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第２図は従来のミュート回路、第１図は本考案の一実施
例のミュート回路である。 ２，２１，２２：ミュートスイッチ、３：音声増幅回路
、４：スピーカ、６：ミュート制御回路、７，９：トラ
ンジスタ。FIG. 2 shows a conventional mute circuit, and FIG. 1 shows a mute circuit according to an embodiment of the present invention. 2, 21, 22: Mute switch, 3: Audio amplification circuit, 4: Speaker, 6: Mute control circuit, 7, 9: Transistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 復調信号の音声帯域外雑音信号で音声増幅回路を制御す
るＦＭ無線機のミュート回路において、前記ミュート回
路を前記音声増幅回路の電源入力回路に直列に挿入した
第１のミュートスイッチと、前記音声増幅回路の音声入
力回路に直列に挿入した第２のミュートスイッチと、復
調信号を受けて前記第１、第２のミュートスイッチを併
列制御するミュート制御回路とで構成すると共に、外部
信号によって前記第１のミュートスイッチを常時接続状
態に出来ることを特徴とするミュート回路。A mute circuit for an FM radio that controls an audio amplification circuit using an out-of-audio band noise signal of a demodulated signal includes a first mute switch in which the mute circuit is inserted in series with a power input circuit of the audio amplification circuit, and the audio amplification circuit. The circuit includes a second mute switch inserted in series into the audio input circuit of the circuit, and a mute control circuit that receives a demodulated signal and controls the first and second mute switches in parallel. A mute circuit characterized in that a mute switch can be kept connected at all times.
JP12290184U 1984-08-13 1984-08-13 Mute circuit Granted JPS6137637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12290184U JPS6137637U (en) 1984-08-13 1984-08-13 Mute circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12290184U JPS6137637U (en) 1984-08-13 1984-08-13 Mute circuit

Publications (2)

Publication Number Publication Date
JPS6137637U true JPS6137637U (en) 1986-03-08
JPH026690Y2 JPH026690Y2 (en) 1990-02-19

Family

ID=30681655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12290184U Granted JPS6137637U (en) 1984-08-13 1984-08-13 Mute circuit

Country Status (1)

Country Link
JP (1) JPS6137637U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02161802A (en) * 1988-12-14 1990-06-21 Nec Corp Amplifier circuit with muting function
JPH02126415U (en) * 1989-03-24 1990-10-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02161802A (en) * 1988-12-14 1990-06-21 Nec Corp Amplifier circuit with muting function
JPH02126415U (en) * 1989-03-24 1990-10-18

Also Published As

Publication number Publication date
JPH026690Y2 (en) 1990-02-19

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