JPH0438119U - - Google Patents
Info
- Publication number
- JPH0438119U JPH0438119U JP7932990U JP7932990U JPH0438119U JP H0438119 U JPH0438119 U JP H0438119U JP 7932990 U JP7932990 U JP 7932990U JP 7932990 U JP7932990 U JP 7932990U JP H0438119 U JPH0438119 U JP H0438119U
- Authority
- JP
- Japan
- Prior art keywords
- power amplifier
- amplifier
- protection circuit
- predetermined value
- output
- 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)
Description
第１図は、この考案によるパワーアンプ保護回
路の一実施例を示す回路図、第２図は従来のパワ
ーアンプ保護回路の過負荷検出部を中心とする回
路図である。
１０……ＯＰアンプ、２０……過負荷検出部、
２１……制御回路、２２……信号増幅段、２３…
…小信号電源。
FIG. 1 is a circuit diagram showing an embodiment of a power amplifier protection circuit according to this invention, and FIG. 2 is a circuit diagram mainly showing an overload detection section of a conventional power amplifier protection circuit. 10...OP amplifier, 20...Overload detection section,
21...Control circuit, 22...Signal amplification stage, 23...
...Small signal power supply.
Claims (1)
るためのミユート動作を行わせるパワーアンプ保
護回路において、 所定以上の温度のとき、または所定以上の負荷
が加わつたときに前記演算増幅器の一入力端子に
印加される入力電圧を変化させて前記演算増幅器
の出力を変化させるように構成したことを特徴と
するパワーアンプ保護回路。[Claims for Utility Model Registration] In a power amplifier protection circuit that performs a mute operation to protect a power amplifier using the output of an operational amplifier, when the temperature exceeds a predetermined value or a load exceeds a predetermined value, A power amplifier protection circuit characterized in that the output of the operational amplifier is changed by changing the input voltage applied to one input terminal of the amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7932990U JPH0438119U (en) | 1990-07-27 | 1990-07-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7932990U JPH0438119U (en) | 1990-07-27 | 1990-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438119U true JPH0438119U (en) | 1992-03-31 |
Family
ID=31623390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7932990U Pending JPH0438119U (en) | 1990-07-27 | 1990-07-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008005643A (en) * | 2006-06-23 | 2008-01-10 | Kenwood Corp | Semiconductor protective circuit device |
-
1990
- 1990-07-27 JP JP7932990U patent/JPH0438119U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008005643A (en) * | 2006-06-23 | 2008-01-10 | Kenwood Corp | Semiconductor protective circuit device |
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