JPS6133586U - speaker protection circuit - Google Patents
speaker protection circuitInfo
- Publication number
- JPS6133586U JPS6133586U JP11741784U JP11741784U JPS6133586U JP S6133586 U JPS6133586 U JP S6133586U JP 11741784 U JP11741784 U JP 11741784U JP 11741784 U JP11741784 U JP 11741784U JP S6133586 U JPS6133586 U JP S6133586U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transistor
- protection circuit
- speaker protection
- speaker
- 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、この考案の一実施例を示す回路図である。
第２図は、従来のスピーカ保護回路を示す回路図である
。
第３図は、第１図の回路の実際の設計例を示す回路図で
ある。
１０・・・アンプ、１２・・・スピーカ、１４・・・リ
レー、１４ａ・・・リレー接点、１６・・・低域ｐ波回
路、Ｑ１・・・エミツタ接地トランジスタ、Ｑ２・・・
ベース接地トランジスタ。FIG. 1 is a circuit diagram showing an embodiment of this invention. FIG. 2 is a circuit diagram showing a conventional speaker protection circuit. FIG. 3 is a circuit diagram showing an actual design example of the circuit shown in FIG. 1. 10...Amplifier, 12...Speaker, 14...Relay, 14a...Relay contact, 16...Low frequency p-wave circuit, Q1...Emitter grounded transistor, Q2...
Common base transistor.
Claims (1)
ジスタ回路とベース接地トランジスタ回路にそれぞれ入
力し、前記低域Ｐ波回路の出力信号の極性に応じて前記
トランジスタ回路のいずれか一方を動作させ、その動作
に応じて別のトランジスタを介してリレーを動作させて
スピーカ回路をオフするスピーカ保護回路において、前
記トランジスタ回路にインピーダンス回路を接続して、
両トランジスタ回路のインピーダンスの平衡をとるよう
にしｈことを特徴とするスピーカ保護回路。inputting the amplifier output to a common emitter transistor circuit and a common base transistor circuit through a low-frequency P-wave circuit, and operating one of the transistor circuits according to the polarity of the output signal of the low-frequency P-wave circuit; In a speaker protection circuit that operates a relay via another transistor depending on the operation to turn off the speaker circuit, an impedance circuit is connected to the transistor circuit,
A speaker protection circuit characterized in that the impedances of both transistor circuits are balanced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11741784U JPS6133586U (en) | 1984-07-30 | 1984-07-30 | speaker protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11741784U JPS6133586U (en) | 1984-07-30 | 1984-07-30 | speaker protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6133586U true JPS6133586U (en) | 1986-02-28 |
Family
ID=30676326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11741784U Pending JPS6133586U (en) | 1984-07-30 | 1984-07-30 | speaker protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6133586U (en) |
-
1984
- 1984-07-30 JP JP11741784U patent/JPS6133586U/en active Pending
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