JPS6066195U - Microphone signal amplification circuit - Google Patents

Microphone signal amplification circuit

Info

Publication number
JPS6066195U
JPS6066195U JP15726183U JP15726183U JPS6066195U JP S6066195 U JPS6066195 U JP S6066195U JP 15726183 U JP15726183 U JP 15726183U JP 15726183 U JP15726183 U JP 15726183U JP S6066195 U JPS6066195 U JP S6066195U
Authority
JP
Japan
Prior art keywords
signal amplification
amplification circuit
input
amplifier
microphone signal
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
JP15726183U
Other languages
Japanese (ja)
Inventor
長下　恒良
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP15726183U priority Critical patent/JPS6066195U/en
Publication of JPS6066195U publication Critical patent/JPS6066195U/en
Pending legal-status Critical Current

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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) [Summary] 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 drawings]

第１図は従来のマイク信号増幅回路の一例を示す回路図
、第２図は本考案によるマイク信号増幅回路の一実施例
を示す回路図、及び第３図は本考案の他の実施例を示す
回路図である。 １・・・第１の増幅器、２・・・第２の増幅器、３′・
・・第１のマイクジャック、４・・・第２のマイクジャ
ック、Ｌ・・・第１の入力端子、Ｒ・・・第２の入力端
子、ＳＷ・・・スイッチ。FIG. 1 is a circuit diagram showing an example of a conventional microphone signal amplification circuit, FIG. 2 is a circuit diagram showing an embodiment of the microphone signal amplification circuit according to the present invention, and FIG. 3 is a circuit diagram showing another embodiment of the microphone signal amplification circuit according to the present invention. FIG. 1... First amplifier, 2... Second amplifier, 3'.
...First microphone jack, 4...Second microphone jack, L...First input terminal, R...Second input terminal, SW...Switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 第１及び第２の入力端子を有するステレオジャックから
なる第１のマイクジャックと、第２のマイクジャックと
、前記第１のマイクジャックの第１の入力端子が入力に
接続された第１の増幅器と、前記第２のマイクジャック
の入力端子が入力に接続された第２の増幅器と、前記第
１のマイクジャックの第２の入力端子と前記第２の増幅
器の入力との間に挿入された常閉のスイッチとを備え、
前記スイッチは前記第２のマイクジャックへのプラグの
挿入に応じて開となるようにしたことを特徴とするマイ
ク信号増幅回路。a first microphone jack consisting of a stereo jack having first and second input terminals, a second microphone jack, and a first amplifier to which the first input terminal of the first microphone jack is connected to the input. and a second amplifier having an input connected to the input terminal of the second microphone jack, and a second amplifier inserted between the second input terminal of the first microphone jack and the input of the second amplifier. Equipped with a normally closed switch,
A microphone signal amplification circuit characterized in that the switch is opened in response to insertion of a plug into the second microphone jack.
JP15726183U 1983-10-13 1983-10-13 Microphone signal amplification circuit Pending JPS6066195U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15726183U JPS6066195U (en) 1983-10-13 1983-10-13 Microphone signal amplification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15726183U JPS6066195U (en) 1983-10-13 1983-10-13 Microphone signal amplification circuit

Publications (1)

Publication Number Publication Date
JPS6066195U true JPS6066195U (en) 1985-05-10

Family

ID=30346767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15726183U Pending JPS6066195U (en) 1983-10-13 1983-10-13 Microphone signal amplification circuit

Country Status (1)

Country Link
JP (1) JPS6066195U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009141915A (en) * 2007-12-11 2009-06-25 Kenwood Corp Input circuit and recording apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009141915A (en) * 2007-12-11 2009-06-25 Kenwood Corp Input circuit and recording apparatus

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