JPS6061823U - amplifier - Google Patents
amplifierInfo
- Publication number
- JPS6061823U JPS6061823U JP15447983U JP15447983U JPS6061823U JP S6061823 U JPS6061823 U JP S6061823U JP 15447983 U JP15447983 U JP 15447983U JP 15447983 U JP15447983 U JP 15447983U JP S6061823 U JPS6061823 U JP S6061823U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- control circuit
- circuit
- output
- power
- 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
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
第１図は、従来の増幅器を示す回路図、及び第２図は本
考案の一実施例を示す回路図である。
主な図番の説明、１・・・差動増幅回路、２・・・プッ
シュプル増幅回路、３・・・ショック音防止回路、８．
１０・・・出力トランジスタ、１２・・・デカップリン
グコンデンサ、２８・・・出力コンデンサ、２９・・・
電源電圧検出回路、３３． ３５． ３７・・・制御ト
ランジスタ、３４． ３６・・・短絡トランジスタ、３
８・・・放電トランジスタ。FIG. 1 is a circuit diagram showing a conventional amplifier, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. Explanation of main figure numbers, 1...Differential amplifier circuit, 2...Push-pull amplifier circuit, 3...Shock noise prevention circuit, 8.
10... Output transistor, 12... Decoupling capacitor, 28... Output capacitor, 29...
Power supply voltage detection circuit, 33. 35. 37... control transistor, 34. 36... Short circuit transistor, 3
8...discharge transistor.
Claims (1)
電圧に応じて出力コンデンサを徐々に充電して電源投入
時のショック音発生を防止するショック音防止回蕗を備
える増幅器において、電源電圧が所定値以上になったと
き出力信号を発生する電源電圧検出回路と、該検出同座
の出力信号に応じて前記増幅器の出力トランジスタをオ
フにする第１制御回路と、前記検出回路の出力信号に応
じて前記デカップリングコンデンサの電荷を放電する第
２制御回路とを備えることを特徴とする増幅器。In an amplifier equipped with a shock noise prevention circuit that operates when the power is turned on and gradually charges the output capacitor according to the terminal voltage of the decoupling capacitor to prevent the generation of shock noise when the power is turned on, the power supply voltage exceeds a predetermined value. a first control circuit that turns off the output transistor of the amplifier in accordance with the output signal of the detection circuit; and a first control circuit that turns off the output transistor of the amplifier in response to the output signal of the detection circuit; and a second control circuit that discharges the charge of the ring capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15447983U JPS6061823U (en) | 1983-10-04 | 1983-10-04 | amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15447983U JPS6061823U (en) | 1983-10-04 | 1983-10-04 | amplifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6061823U true JPS6061823U (en) | 1985-04-30 |
| JPH0314813Y2 JPH0314813Y2 (en) | 1991-04-02 |
Family
ID=30341466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15447983U Granted JPS6061823U (en) | 1983-10-04 | 1983-10-04 | amplifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6061823U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149750A (en) * | 1975-01-29 | 1976-12-22 | Sanyo Electric Co Ltd | Protective circuit |
| JPS5726911A (en) * | 1980-07-25 | 1982-02-13 | Toshiba Corp | Amplifier |
-
1983
- 1983-10-04 JP JP15447983U patent/JPS6061823U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149750A (en) * | 1975-01-29 | 1976-12-22 | Sanyo Electric Co Ltd | Protective circuit |
| JPS5726911A (en) * | 1980-07-25 | 1982-02-13 | Toshiba Corp | Amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0314813Y2 (en) | 1991-04-02 |
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