JPS59174790U - Speaker protection circuit - Google Patents
Speaker protection circuitInfo
- Publication number
- JPS59174790U JPS59174790U JP6893983U JP6893983U JPS59174790U JP S59174790 U JPS59174790 U JP S59174790U JP 6893983 U JP6893983 U JP 6893983U JP 6893983 U JP6893983 U JP 6893983U JP S59174790 U JPS59174790 U JP S59174790U
- Authority
- JP
- Japan
- Prior art keywords
- protection circuit
- circuit
- speaker protection
- supplied
- 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
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図は従来のスピーカの保護回路の例を示す構成図、
第２図は本考案スピーカの保護回路の一実施例を示す構
成図、第３図は本考案の他の実施例を示す構成図である
。
１ａ及び１ｂは夫々音声信号入力端子、２及び３はＯＣ
Ｌ増幅回路を構成するトランジスタ、６は接続スイッチ
、７はスピーカ、８は直流不平衡電圧検出回路、１２は
電磁装置、１３は高域通過フィルタ、１４は整流回路で
ある。Figure 1 is a configuration diagram showing an example of a conventional speaker protection circuit.
FIG. 2 is a block diagram showing one embodiment of a protection circuit for a speaker of the present invention, and FIG. 3 is a block diagram showing another embodiment of the present invention. 1a and 1b are audio signal input terminals, 2 and 3 are OC
A transistor constitutes the L amplifier circuit, 6 is a connection switch, 7 is a speaker, 8 is a DC unbalanced voltage detection circuit, 12 is an electromagnetic device, 13 is a high-pass filter, and 14 is a rectifier circuit.
Claims (1)
れる信号を接続スイッチを介してスピーカに供給する様
にすると共に上記出力端子に得られる信号を直流不平衡
電圧検出回路に供給する様にし、該直流不平衡電圧検出
回路の出力信号により上記接続スイッチをオンオフする
様にしたスピーカの保護回路に於いて、上記出力端子に
得られる信号を高域通過フィルタを介して整流回路に供
給し、該整流回路の出力信号によっても上記接続スイッ
チのオンオフを制御する様にしたことを特徴とするスピ
ーカの保護回路。The signal obtained at the output terminal of the output capacitorless amplifier circuit is supplied to the speaker via the connection switch, and the signal obtained at the output terminal is supplied to the DC unbalanced voltage detection circuit. In a speaker protection circuit in which the connection switch is turned on and off by the output signal of the balanced voltage detection circuit, the signal obtained at the output terminal is supplied to the rectifier circuit via a high-pass filter, and the rectifier circuit is A speaker protection circuit characterized in that the on/off of the connection switch is controlled also by an output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6893983U JPS59174790U (en) | 1983-05-09 | 1983-05-09 | Speaker protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6893983U JPS59174790U (en) | 1983-05-09 | 1983-05-09 | Speaker protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59174790U true JPS59174790U (en) | 1984-11-21 |
Family
ID=30199103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6893983U Pending JPS59174790U (en) | 1983-05-09 | 1983-05-09 | Speaker protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59174790U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637598B2 (en) * | 1974-06-27 | 1981-09-01 | ||
| JPS5639795B2 (en) * | 1976-07-16 | 1981-09-16 |
-
1983
- 1983-05-09 JP JP6893983U patent/JPS59174790U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5637598B2 (en) * | 1974-06-27 | 1981-09-01 | ||
| JPS5639795B2 (en) * | 1976-07-16 | 1981-09-16 |
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