JPS6047312U - Amplifier protection circuit - Google Patents
Amplifier protection circuitInfo
- Publication number
- JPS6047312U JPS6047312U JP13982883U JP13982883U JPS6047312U JP S6047312 U JPS6047312 U JP S6047312U JP 13982883 U JP13982883 U JP 13982883U JP 13982883 U JP13982883 U JP 13982883U JP S6047312 U JPS6047312 U JP S6047312U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- detection
- transistor
- voltage
- generation circuit
- 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図は従来の増幅器の保障回路を示す回路図、第２図
はその説明に供する為の特性図、及び第３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、２２・・・ＯＣＬ増幅器、２８゜
２６．４０．４１・・・分圧抵抗、３０・・・検出トラ
ンジスタ、３８．４４・・・遮断トランジスタ、３９・
・・制御トランジスタ。FIG. 1 is a circuit diagram showing a conventional amplifier guarantee circuit, FIG. 2 is a characteristic diagram for explaining the same, and FIG. 3 is a circuit diagram showing an embodiment of the present invention.゛ Explanation of main figure numbers, 22...OCL amplifier, 28゜26.40.41...Voltage dividing resistor, 30...Detection transistor, 38.44...Shutoff transistor, 39.
...control transistor.
Claims (1)
ス電圧に応じた電圧を発生する電圧発生回路と、該電圧
発生回路の出力電圧レベルを検出する検出トランジスタ
と、該検出トランジスタの動作に応じて増幅器の信号路
を遮断する遮断トランジスタと、前記増幅器の正常動作
時に前記検出トランジスタの検出動作を停止させ、前記
増幅器の出力中点の地絡時に前記検出トランジスタの検
出動作の停止解除を行う制御トランジスタとから成り、
前記出力中点の地絡時のみ保護動作を行う ５、様にし
た増幅器の保護回路。A voltage generation circuit that generates a voltage according to the base voltage of the positive power transistor connected in a push-pull manner, a detection transistor that detects the output voltage level of the voltage generation circuit, and an amplifier signal that detects the output voltage level of the voltage generation circuit according to the operation of the detection transistor. and a control transistor that stops the detection operation of the detection transistor when the amplifier is in normal operation and releases the detection operation of the detection transistor when the output midpoint of the amplifier is grounded. ,
5. A protection circuit for an amplifier as described above, which performs a protective operation only in the event of a ground fault at the output midpoint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13982883U JPS6047312U (en) | 1983-09-08 | 1983-09-08 | Amplifier protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13982883U JPS6047312U (en) | 1983-09-08 | 1983-09-08 | Amplifier protection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6047312U true JPS6047312U (en) | 1985-04-03 |
| JPH0346579Y2 JPH0346579Y2 (en) | 1991-10-02 |
Family
ID=30313279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13982883U Granted JPS6047312U (en) | 1983-09-08 | 1983-09-08 | Amplifier protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047312U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228157A (en) * | 2007-03-15 | 2008-09-25 | Toa Corp | Power amplifier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149750A (en) * | 1975-01-29 | 1976-12-22 | Sanyo Electric Co Ltd | Protective circuit |
| JPS5443660A (en) * | 1977-09-13 | 1979-04-06 | Pioneer Electronic Corp | Amplifier output circuit malfunction detecting system |
| JPS5563109A (en) * | 1978-11-02 | 1980-05-13 | Sanyo Electric Co Ltd | Protective circuit for transistor amplifier |
-
1983
- 1983-09-08 JP JP13982883U patent/JPS6047312U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51149750A (en) * | 1975-01-29 | 1976-12-22 | Sanyo Electric Co Ltd | Protective circuit |
| JPS5443660A (en) * | 1977-09-13 | 1979-04-06 | Pioneer Electronic Corp | Amplifier output circuit malfunction detecting system |
| JPS5563109A (en) * | 1978-11-02 | 1980-05-13 | Sanyo Electric Co Ltd | Protective circuit for transistor amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008228157A (en) * | 2007-03-15 | 2008-09-25 | Toa Corp | Power amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346579Y2 (en) | 1991-10-02 |
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