JPS596393U - protection circuit - Google Patents
protection circuitInfo
- Publication number
- JPS596393U JPS596393U JP9994882U JP9994882U JPS596393U JP S596393 U JPS596393 U JP S596393U JP 9994882 U JP9994882 U JP 9994882U JP 9994882 U JP9994882 U JP 9994882U JP S596393 U JPS596393 U JP S596393U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- voltage control
- power amplifier
- circuit
- protection 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.)
- 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
第１図はこの考案の保護回路の一実施例を示すブロック
図、第２図は第１図の保護回路における過大電圧検出回
路および正極側電圧コントロール回路の部分の詳細な構
成を示す回路図である。第３図は接続点Ｂの電圧を示す
図である。
１・・・電力増幅器、２・・・スピーカ、３・・・正極
側電圧コントロール回路、４・・・負極側電圧コントロ
ール回路、５・・・過大電圧検出回路、６・・・整流回
路、Ｑ工〜Ｑ、・・・トランジスタ、Ｒ１−Ｒ６・・・
抵抗、Ｃ□・・・コンデンサ、Ｆｌ・・・フィルタ回路
。Figure 1 is a block diagram showing one embodiment of the protection circuit of this invention, and Figure 2 is a circuit diagram showing the detailed configuration of the overvoltage detection circuit and positive voltage control circuit in the protection circuit of Figure 1. be. FIG. 3 is a diagram showing the voltage at connection point B. DESCRIPTION OF SYMBOLS 1... Power amplifier, 2... Speaker, 3... Positive side voltage control circuit, 4... Negative side voltage control circuit, 5... Excessive voltage detection circuit, 6... Rectifier circuit, Q Engineering~Q,...transistor, R1-R6...
Resistor, C□...capacitor, Fl...filter circuit.
Claims (1)
力増幅器に動作電圧を供給する正極側電圧コントロール
回路および負極側電圧コントロール回路と、上記スピー
カの端子電圧を検出しこの端子電圧が所定以上の過大電
圧になると上記電力増幅器に印加する動作電圧を低下さ
せるように上記正極側電圧コントロール回路および負極
側電圧コントロール回路を制御する過大電圧検出回路と
よりなる保護回路。A speaker driven by the output of a power amplifier, a positive voltage control circuit and a negative voltage control circuit that supply operating voltage to the power amplifier, and detect the terminal voltage of the speaker and detect an excessive voltage exceeding a predetermined level. a protection circuit comprising an overvoltage detection circuit that controls the positive voltage control circuit and the negative voltage control circuit so as to reduce the operating voltage applied to the power amplifier when
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9994882U JPS596393U (en) | 1982-07-01 | 1982-07-01 | protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9994882U JPS596393U (en) | 1982-07-01 | 1982-07-01 | protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS596393U true JPS596393U (en) | 1984-01-17 |
Family
ID=30236645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9994882U Pending JPS596393U (en) | 1982-07-01 | 1982-07-01 | protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596393U (en) |
-
1982
- 1982-07-01 JP JP9994882U patent/JPS596393U/en active Pending
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