JPS5936686U - speaker protection circuit - Google Patents

speaker protection circuit

Info

Publication number
JPS5936686U
JPS5936686U JP12973282U JP12973282U JPS5936686U JP S5936686 U JPS5936686 U JP S5936686U JP 12973282 U JP12973282 U JP 12973282U JP 12973282 U JP12973282 U JP 12973282U JP S5936686 U JPS5936686 U JP S5936686U
Authority
JP
Japan
Prior art keywords
reference voltage
circuit
voltage section
output
differential amplifier
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
Application number
JP12973282U
Other languages
Japanese (ja)
Other versions
JPS6333437Y2 (en
Inventor
樋山　克
Original Assignee
株式会社ケンウッド
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社ケンウッド filed Critical 株式会社ケンウッド
Priority to JP12973282U priority Critical patent/JPS5936686U/en
Publication of JPS5936686U publication Critical patent/JPS5936686U/en
Application granted granted Critical
Publication of JPS6333437Y2 publication Critical patent/JPS6333437Y2/ja
Granted legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来のスピーカー保護回路を示すブロック図、
第２図及び第３図は本考案に係るスピーカー保護回路の
実施例を示し、第２図はブロック図、第３図は他の実施
例を示すブロック図である。 Ａ：電力増幅器、１：検出回路、２：第１の基準電圧部
、３：差動増幅器、４：クランプ回路、５：減衰器とし
てのＦＥＴ、６：第２の基準電圧部、Ｃ：時定数回路と
してのコンデンサー、Ｓ：スイッチ回路。Figure 1 is a block diagram showing a conventional speaker protection circuit.
2 and 3 show an embodiment of the speaker protection circuit according to the present invention, FIG. 2 is a block diagram, and FIG. 3 is a block diagram showing another embodiment. A: power amplifier, 1: detection circuit, 2: first reference voltage section, 3: differential amplifier, 4: clamp circuit, 5: FET as attenuator, 6: second reference voltage section, C: time Capacitor as a constant circuit, S: switch circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電力増幅器の出力のピーク値を検出する検出回路と、任
意に設定できる第１の基準電圧部と、上記検出回路の出
力と上記第１の基準電圧とを比較増幅する差動増幅器と
、該差動道幅器からの出力をクランプするクランプ回路
と、上記差動増幅器により制御される減衰器と、上記差
動増幅器からの出力が時定数回路を介して入力されるよ
うになっているスイッチ回路と該スイッチ回路により上
パ°記第１の基準電圧部と交換的に切換接続される第２
の基準電圧部とから構成されていることを特徴とするス
ピーカー保護回路。a detection circuit that detects the peak value of the output of the power amplifier; a first reference voltage section that can be set arbitrarily; a differential amplifier that compares and amplifies the output of the detection circuit and the first reference voltage; a clamp circuit that clamps the output from the differential amplifier; an attenuator controlled by the differential amplifier; and a switch circuit to which the output from the differential amplifier is input via a time constant circuit. The second reference voltage section is switched and connected to the first reference voltage section by the switch circuit.
A speaker protection circuit comprising: a reference voltage section; and a reference voltage section.
JP12973282U 1982-08-30 1982-08-30 speaker protection circuit Granted JPS5936686U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12973282U JPS5936686U (en) 1982-08-30 1982-08-30 speaker protection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12973282U JPS5936686U (en) 1982-08-30 1982-08-30 speaker protection circuit

Publications (2)

Publication Number Publication Date
JPS5936686U true JPS5936686U (en) 1984-03-07
JPS6333437Y2 JPS6333437Y2 (en) 1988-09-06

Family

ID=30293854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12973282U Granted JPS5936686U (en) 1982-08-30 1982-08-30 speaker protection circuit

Country Status (1)

Country Link
JP (1) JPS5936686U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006165687A (en) * 2004-12-02 2006-06-22 Onkyo Corp Switching amplifier
JP2008022512A (en) * 2006-07-12 2008-01-31 Micro-Star Internatl Co Ltd Sound volume control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006165687A (en) * 2004-12-02 2006-06-22 Onkyo Corp Switching amplifier
JP2008022512A (en) * 2006-07-12 2008-01-31 Micro-Star Internatl Co Ltd Sound volume control method

Also Published As

Publication number Publication date
JPS6333437Y2 (en) 1988-09-06

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