JPS5883817U - audio amplifier - Google Patents
audio amplifierInfo
- Publication number
- JPS5883817U JPS5883817U JP17861681U JP17861681U JPS5883817U JP S5883817 U JPS5883817 U JP S5883817U JP 17861681 U JP17861681 U JP 17861681U JP 17861681 U JP17861681 U JP 17861681U JP S5883817 U JPS5883817 U JP S5883817U
- Authority
- JP
- Japan
- Prior art keywords
- output terminal
- audio amplifier
- headphone
- speaker
- bias
- 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
Links
Landscapes
- 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
図は本考案による音響用増幅器の一実施例を示′す回路
図である。
３．６〜９・・・・・・トランジスタ、４・・・・・・
抵抗、５・・・・・・バリスタ、１０・・・・・・スピ
ーカ用出力端子、１１・・・・・・保護抵抗、１２・・
・・・・ヘッドホンジャック、１３・・・・・・スイッ
チ、１４・・曲バイアス可変用抵抗。The figure is a circuit diagram showing an embodiment of the acoustic amplifier according to the present invention. 3.6-9...Transistor, 4...
Resistor, 5...Varistor, 10...Speaker output terminal, 11...Protection resistor, 12...
...Headphone jack, 13...Switch, 14...Resistance for variable song bias.
Claims (1)
介して接続されたヘッドホン出力端子とを備える音響用
増幅器において、前記ヘッドホン出力端子にヘッド牛ン
を接続したとき、増幅用トランジスタのバイアスを切換
えて前記スピーカ用出力端子の出力を低下させるための
切換え回路を備えることを特徴とする音響用増幅器。In an audio amplifier equipped with a speaker output terminal and a headphone output terminal connected in parallel with this output terminal via a protective resistor, when a headphone is connected to the headphone output terminal, the bias of the amplification transistor is switched. An acoustic amplifier comprising a switching circuit for reducing the output of the speaker output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17861681U JPS5883817U (en) | 1981-12-02 | 1981-12-02 | audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17861681U JPS5883817U (en) | 1981-12-02 | 1981-12-02 | audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5883817U true JPS5883817U (en) | 1983-06-07 |
Family
ID=29973577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17861681U Pending JPS5883817U (en) | 1981-12-02 | 1981-12-02 | audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5883817U (en) |
-
1981
- 1981-12-02 JP JP17861681U patent/JPS5883817U/en active Pending
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