JPH03109422U - - Google Patents
Info
- Publication number
- JPH03109422U JPH03109422U JP1936590U JP1936590U JPH03109422U JP H03109422 U JPH03109422 U JP H03109422U JP 1936590 U JP1936590 U JP 1936590U JP 1936590 U JP1936590 U JP 1936590U JP H03109422 U JPH03109422 U JP H03109422U
- Authority
- JP
- Japan
- Prior art keywords
- filter circuit
- rectifies
- speaker
- output
- rectifier 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
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Description
第１図は本考案に係わるスピーカの音質調整装
置の電気的構成を示すブロツク線図、第２図は本
考案の音質調整装置の通常動作時のスイツチング
トランジスタＯＮ作動時のスピーカ出力レベルと
周波数との関係を示すグラフ、第３図は従来のス
ピーカの音質調整装置の電気的構成を示すブロツ
ク線図である。
１……オーデイオ信号入力端子、２……音量ボ
リユーム、３……パワーアンプ、４……スピーカ
、５……ローパスフイルタ、６……減衰器、７…
…整流回路、８……スイツチングトランジスタ、
１０……第１のコンデンサ、１１……第２のコン
デンサ。
Fig. 1 is a block diagram showing the electrical configuration of the speaker sound quality adjustment device according to the present invention, and Fig. 2 shows the speaker output level and frequency when the switching transistor is turned on during normal operation of the sound quality adjustment device of the present invention. FIG. 3 is a block diagram showing the electrical configuration of a conventional speaker sound quality adjustment device. 1...Audio signal input terminal, 2...Volume volume, 3...Power amplifier, 4...Speaker, 5...Low pass filter, 6...Attenuator, 7...
... Rectifier circuit, 8... Switching transistor,
10...first capacitor, 11...second capacitor.
Claims (1)
から低音域部分を抽出するフイルタ回路と、 このフイルタ回路によつて抽出された出力を整
流する整流回路と、 この整流回路によつて得られた直流電圧がベー
スに印加されたスイツチングトランジスタとを備
え、 エミツタが接地された前記スイツチングトラン
ジスタのコレクタが、前記パワーアンプの反転入
力端子に直列接続された負帰還用の第１及び第２
コンデンサの中点に接続されたことを特徴とする
スピーカの音質調整装置。[Claim for Utility Model Registration] A filter circuit that extracts the low frequency range from the output stage of a power amplifier that drives a speaker, a rectifier circuit that rectifies the output extracted by the filter circuit, and a rectifier circuit that rectifies the output extracted by the filter circuit. and a switching transistor to which the DC voltage obtained by and second
A speaker sound quality adjustment device characterized by being connected to the midpoint of a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1936590U JPH03109422U (en) | 1990-02-26 | 1990-02-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1936590U JPH03109422U (en) | 1990-02-26 | 1990-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03109422U true JPH03109422U (en) | 1991-11-11 |
Family
ID=31522488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1936590U Pending JPH03109422U (en) | 1990-02-26 | 1990-02-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03109422U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008262887A (en) * | 2006-12-21 | 2008-10-30 | Inosho:Kk | Daylighting device |
| WO2012137641A1 (en) * | 2011-04-01 | 2012-10-11 | 西日本高速道路エンジニアリング関西株式会社 | Tunnel entrance lighting system |
-
1990
- 1990-02-26 JP JP1936590U patent/JPH03109422U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008262887A (en) * | 2006-12-21 | 2008-10-30 | Inosho:Kk | Daylighting device |
| WO2012137641A1 (en) * | 2011-04-01 | 2012-10-11 | 西日本高速道路エンジニアリング関西株式会社 | Tunnel entrance lighting system |
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