JPH0439723U - - Google Patents
Info
- Publication number
- JPH0439723U JPH0439723U JP8270990U JP8270990U JPH0439723U JP H0439723 U JPH0439723 U JP H0439723U JP 8270990 U JP8270990 U JP 8270990U JP 8270990 U JP8270990 U JP 8270990U JP H0439723 U JPH0439723 U JP H0439723U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- connection means
- bypass circuit
- audio signal
- external connection
- 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
- 230000005236 sound signal Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Amplifiers (AREA)
Description
第１図は本考案の一実施例を示すものであつて
、音響回路にスピーカが接続された状態を示す回
路図である。第２図は従来例を示すものであつて
、音響回路にスピーカが接続された状態を示す回
路図である。
１は音量調整器、３はメインアンプ、４はスピ
ーカ切り換えスイツチ、５は回路切り換えスイツ
チ（第２スイツチング手段）、６はスピーカ、７
は低音増強回路、８はバイパス回路、９は出力部
、Ｑ２はスイツチングトランジスタ（第１スイツ
チング手段）、Ｊ１はヘツドホンジヤツク（外部
接続手段）である。
FIG. 1 shows one embodiment of the present invention, and is a circuit diagram showing a state in which a speaker is connected to an acoustic circuit. FIG. 2 shows a conventional example, and is a circuit diagram showing a state in which a speaker is connected to an acoustic circuit. 1 is a volume adjuster, 3 is a main amplifier, 4 is a speaker selection switch, 5 is a circuit selection switch (second switching means), 6 is a speaker, 7
8 is a bass enhancement circuit, 8 is a bypass circuit, 9 is an output section, Q2 is a switching transistor (first switching means), and J1 is a headphone jack (external connection means).
Claims (1)
号の周波数特性を調整する低音増強回路を備え、
出力部からスピーカに音声信号を供給すると共に
、上記の出力部には外部に音声信号を供給する外
部接続手段が設けられている音響回路において、 上記の低音増強回路にはその入力側と出力側と
を短絡するバイパス回路が設けられ、このバイパ
ス回路には、バイパス回路を開閉する第１スイツ
チング手段が設けられ、上記の外部接続手段には
、この外部接続手段に対応する接続手段が接続さ
れたときに、バイパス回路が閉じるように第１ス
イツチング手段を作動させる一方、外部接続手段
に接続手段が接続されていないときに、バイパス
回路が開くように第１スイツチング手段を作動さ
せる第２スイツチング手段が設けられていること
を特徴とする音響回路。[Claims for Utility Model Registration] Equipped with a bass enhancement circuit that adjusts the frequency characteristics of the audio signal to emphasize the bass part of the audible frequency band,
In an acoustic circuit in which an audio signal is supplied from the output section to the speaker, and the above output section is provided with an external connection means for supplying the audio signal to the outside, the above bass enhancement circuit has an input side and an output side. A bypass circuit is provided to short-circuit the bypass circuit, and the bypass circuit is provided with a first switching means for opening and closing the bypass circuit, and the external connection means is connected to a corresponding connection means. When the first switching means is actuated to close the bypass circuit, the second switching means is actuated to open the bypass circuit when the connection means is not connected to the external connection means. An acoustic circuit characterized by being provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8270990U JPH0439723U (en) | 1990-08-02 | 1990-08-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8270990U JPH0439723U (en) | 1990-08-02 | 1990-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0439723U true JPH0439723U (en) | 1992-04-03 |
Family
ID=31629762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8270990U Pending JPH0439723U (en) | 1990-08-02 | 1990-08-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439723U (en) |
-
1990
- 1990-08-02 JP JP8270990U patent/JPH0439723U/ja active Pending
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