JPH0427693U - - Google Patents
Info
- Publication number
- JPH0427693U JPH0427693U JP6902690U JP6902690U JPH0427693U JP H0427693 U JPH0427693 U JP H0427693U JP 6902690 U JP6902690 U JP 6902690U JP 6902690 U JP6902690 U JP 6902690U JP H0427693 U JPH0427693 U JP H0427693U
- Authority
- JP
- Japan
- Prior art keywords
- acoustic signal
- switch
- amplifier circuit
- output
- 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
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例のラジオカセツトレ
コーダ２１の電気的構成を示すブロツク図、第２
図は従来技術のラジオカセツトレコーダ１の電気
的構成を示すブロツク図である。
２１……ラジオカセツトレコーダ、２３……ラ
ジオ受信部、２６……録音再生部、２７……ソー
ス選択スイツチ、２８……スピーカ、３１……ボ
リウム、３２……低音域増強回路、３３……アナ
ログスイツチ、３４……メインアンプ、３５，４
１……スイツチ、３６……減衰用抵抗、３７……
ヘツドホンジヤツク、３８……プラグ、３９……
接続ケーブル、４０……ヘツドホン、ｌ１……バ
イパス信号ライン。
FIG. 1 is a block diagram showing the electrical configuration of a radio cassette recorder 21 according to an embodiment of the present invention, and FIG.
The figure is a block diagram showing the electrical configuration of a radio cassette recorder 1 of the prior art. 21...Radio cassette recorder, 23...Radio receiving section, 26...Recording/playback section, 27...Source selection switch, 28...Speaker, 31...Volume, 32...Bass range enhancement circuit, 33...Analog Switch, 34... Main amplifier, 35,4
1... Switch, 36... Attenuation resistor, 37...
Headphone jack, 38...Plug, 39...
Connection cable, 40...headphone, l1...bypass signal line.
Claims (1)
する低音域増強回路と、 前記音響信号を増幅する増幅回路と、 音響信号源からの音響信号と、低音域増強回路
を介する音響信号とを選択的に切換えて前記増幅
回路に与える第１スイツチと、 スピーカと、 スピーカと増幅回路との間に介在される第２ス
イツチと、 前記増幅回路の出力が与えられ、出力信号ライ
ンが着脱自在に接続される外部接続端子と、 前記外部接続端子に前記出力信号ラインが接続
されているか否かを検出し、接続されていないと
きには前記第２スイツチを導通して増幅回路の出
力をスピーカに与え、かつ低音域増強回路の出力
を増幅回路に入力するように第１スイツチのスイ
ツチング状態を制御し、前記出力信号ラインが接
続されているときには前記第２スイツチを遮断し
、かつ音響信号源からの音響信号を増幅回路に入
力するように第１スイツチのスイツチング状態を
制御する切換制御手段とを含むことを特徴とする
音響再生装置。[Claims for Utility Model Registration] An acoustic signal source, a low frequency enhancement circuit for enhancing the low frequency range of an acoustic signal from the acoustic signal source, an amplifier circuit for amplifying the acoustic signal, and an acoustic signal from the acoustic signal source. a first switch that selectively switches between the audio signal and the acoustic signal passing through the bass booster circuit and applies the same to the amplifier circuit; a speaker; and a second switch interposed between the speaker and the amplifier circuit; an external connection terminal to which an output is applied and an output signal line is detachably connected; and detects whether or not the output signal line is connected to the external connection terminal, and if not connected, switches the second switch. The switching state of the first switch is controlled so that the output of the amplifier circuit is conducted to the speaker and the output of the bass booster circuit is input to the amplifier circuit, and when the output signal line is connected, the switching state of the first switch is controlled. 1. A sound reproducing device comprising switching control means for controlling the switching state of the first switch so as to cut off the switch and input an acoustic signal from an acoustic signal source to an amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6902690U JPH0427693U (en) | 1990-06-28 | 1990-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6902690U JPH0427693U (en) | 1990-06-28 | 1990-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0427693U true JPH0427693U (en) | 1992-03-05 |
Family
ID=31603980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6902690U Pending JPH0427693U (en) | 1990-06-28 | 1990-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0427693U (en) |
-
1990
- 1990-06-28 JP JP6902690U patent/JPH0427693U/ja active Pending
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