JPS60116715U - amplifier circuit - Google Patents

amplifier circuit

Info

Publication number
JPS60116715U
JPS60116715U JP451984U JP451984U JPS60116715U JP S60116715 U JPS60116715 U JP S60116715U JP 451984 U JP451984 U JP 451984U JP 451984 U JP451984 U JP 451984U JP S60116715 U JPS60116715 U JP S60116715U
Authority
JP
Japan
Prior art keywords
amplifier
feedback circuit
variable resistor
input terminal
feedback
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
JP451984U
Other languages
Japanese (ja)
Inventor
西尾　俊広
Original Assignee
日本ビクター株式会社
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 日本ビクター株式会社 filed Critical 日本ビクター株式会社
Priority to JP451984U priority Critical patent/JPS60116715U/en
Publication of JPS60116715U publication Critical patent/JPS60116715U/en
Pending legal-status Critical Current

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  • 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) [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図は従来の増幅回路図、第２図はこの考案の増幅回
路の実施例図である。 １・・・録音・再生切換スイッチ、２・・・一方の固定
接点、３・・・他方の固定接点、４・・・可動接点、５
・・・コンデンサ、６・・・増幅器、７・・・増幅器の
一方の入力端子、８・・・増幅器の出力端子、９・・・
コンデンサ、１０・・・録音・再生切換スイッチ、１１
・・・可動接点、１２・・・一方の固定接点、１３・・
・コンデンサ、１４・・・抵抗、１５・・・第１の帰還
回路、１６・・・増幅器６の他方の入力端子、１７・・
・抵抗、１８・・・コンデンサ、１９・・・録音・再生
切換スイッチ１゜の他方の固定接点、２０・・・抵抗、
２１・・・第２の帰還回路、２２・・・可変抵抗器、２
５・・・可変抵抗器２２の摺動端子、２８・・・出力端
子、２９・・・抵抗、−Ｈ・・・再生ヘッド、Ｍ・・・
マイクロホン。FIG. 1 is a diagram of a conventional amplifier circuit, and FIG. 2 is a diagram of an embodiment of the amplifier circuit of this invention. 1... Recording/playback selector switch, 2... One fixed contact, 3... Other fixed contact, 4... Movable contact, 5
... Capacitor, 6... Amplifier, 7... One input terminal of the amplifier, 8... Output terminal of the amplifier, 9...
Capacitor, 10... Recording/playback selector switch, 11
...Movable contact, 12...One fixed contact, 13...
- Capacitor, 14... Resistor, 15... First feedback circuit, 16... Other input terminal of amplifier 6, 17...
・Resistor, 18... Capacitor, 19... Other fixed contact of the recording/playback switch 1°, 20... Resistor,
21... Second feedback circuit, 22... Variable resistor, 2
5...Sliding terminal of variable resistor 22, 28...Output terminal, 29...Resistor, -H...Reproduction head, M...
Microphone.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 増幅器の帰還入力端子とアース間に接続された可変抵抗
器と、一端がこの可変抵抗器の摺動端子に接続された第
１の帰還回路と、一端が上記可変抵抗器の上記帰還入力
端子に接続された側の一端に接続゛された第２の帰還回
路と、これら第１の帰還回路の他端と第２の帰還回路の
他端とを上記増幅器の入力端子に入力される信号源に対
応して切換えて上記増幅器の出力端子に接続するように
したスイッチ手段とで構成された増幅回路。a variable resistor connected between the feedback input terminal of the amplifier and ground; a first feedback circuit having one end connected to the sliding terminal of the variable resistor; and one end connected to the feedback input terminal of the variable resistor. A second feedback circuit connected to one end of the connected side, and the other end of the first feedback circuit and the other end of the second feedback circuit connected to a signal source input to the input terminal of the amplifier. and switch means adapted to be connected to the output terminal of the amplifier by corresponding switching.
JP451984U 1984-01-17 1984-01-17 amplifier circuit Pending JPS60116715U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP451984U JPS60116715U (en) 1984-01-17 1984-01-17 amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP451984U JPS60116715U (en) 1984-01-17 1984-01-17 amplifier circuit

Publications (1)

Publication Number Publication Date
JPS60116715U true JPS60116715U (en) 1985-08-07

Family

ID=30480171

Family Applications (1)

Application Number Title Priority Date Filing Date
JP451984U Pending JPS60116715U (en) 1984-01-17 1984-01-17 amplifier circuit

Country Status (1)

Country Link
JP (1) JPS60116715U (en)

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