JPS61395U - speaker protection circuit - Google Patents
speaker protection circuitInfo
- Publication number
- JPS61395U JPS61395U JP7262685U JP7262685U JPS61395U JP S61395 U JPS61395 U JP S61395U JP 7262685 U JP7262685 U JP 7262685U JP 7262685 U JP7262685 U JP 7262685U JP S61395 U JPS61395 U JP S61395U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- speaker
- output
- self
- switch
- 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
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図は本考案の一実施例を示す回路図、第２図は本考
案の基本原理を示す回路図、第３図は第１図の実施例を
簡略化した実施例を示す回路図である。
なお、図中同一あるいは相当部分は同一符号で示す。
ｌａ，ｌｂ：入力端子、２，８：可変抵抗、３〜６，９
〜１２：ダイオード、７：積分回路、１−３：［解コン
デンサ、１４：インピーダンス素子、１５：自己保持型
スイッチ、１６：スピー力、２１，２２，２３：整流回
路。Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram showing the basic principle of the invention, and Fig. 3 is a circuit diagram showing a simplified embodiment of the embodiment of Fig. 1. be. In addition, the same or corresponding parts in the figures are indicated by the same reference numerals. la, lb: input terminal, 2, 8: variable resistor, 3 to 6, 9
〜12: Diode, 7: Integrating circuit, 1-3: Solution capacitor, 14: Impedance element, 15: Self-holding switch, 16: Speaker power, 21, 22, 23: Rectifier circuit.
Claims (1)
に印加される電力増幅器からの信号を整流する第１の整
流回路、 （ｂ）前記第１の整流回路の出力を積分する積分回路、 （Ｃ）前記第１の整流回路と同一人力電圧においてこの
第１の整流回路の整流出力よりも高い出力電圧を出力す
る第２の整流回路、 （ｄ）自己保持型スイッチを有し前記積分回路の出力が
一定値以上になるとその出力により前記自己保持型スイ
ッチを付勢して、前記スピーカと電力増幅器の間にスピ
ーカと直列にインピーダンスを接続すると共に、前記第
２の整流回路の出力を前記自己保持型スイッチに切換接
続するように構成されたスイッチング回路を備え前記自
己保持型スイッチが復帰する入力信号のレベルを、前記
第１の整流回路と積分回路によらで前記自己保持型スイ
ッチが動作する入力信号のレベルに対して低減せしめた
ことを特徴とするスピーカ保護回路。[Claims for Utility Model Registration] (a) A first rectifier circuit that is connected in parallel with a speaker and rectifies a signal from a power amplifier that is applied to an input terminal of the speaker; an integrating circuit that integrates the output; (C) a second rectifier circuit that outputs a higher output voltage than the rectified output of the first rectifier circuit at the same human power voltage as the first rectifier circuit; (d) a self-holding type. It has a switch, and when the output of the integrating circuit exceeds a certain value, the self-holding switch is energized by the output, and an impedance is connected between the speaker and the power amplifier in series with the speaker, and the second a switching circuit configured to switch and connect the output of the rectifier circuit to the self-holding switch; the level of the input signal at which the self-holding switch returns is determined by the first rectifying circuit and the integrating circuit; A speaker protection circuit characterized in that the self-holding switch operates at a level lower than that of an input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7262685U JPS61395U (en) | 1985-05-16 | 1985-05-16 | speaker protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7262685U JPS61395U (en) | 1985-05-16 | 1985-05-16 | speaker protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61395U true JPS61395U (en) | 1986-01-06 |
Family
ID=30611209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7262685U Pending JPS61395U (en) | 1985-05-16 | 1985-05-16 | speaker protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61395U (en) |
-
1985
- 1985-05-16 JP JP7262685U patent/JPS61395U/en active Pending
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