JPH0375700U - - Google Patents
Info
- Publication number
- JPH0375700U JPH0375700U JP13571589U JP13571589U JPH0375700U JP H0375700 U JPH0375700 U JP H0375700U JP 13571589 U JP13571589 U JP 13571589U JP 13571589 U JP13571589 U JP 13571589U JP H0375700 U JPH0375700 U JP H0375700U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- resistor
- grounded
- light emitting
- 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
Description
図は本考案の音声回路の一実施例を示す電気回
路図である。
１はマイコン、８は汎用のヘツドホンジヤツク
のスイツチ、１３はサラウンド表示用発光ダイオ
ード、Ｃはサラウンドのオン、オフ用リア音量コ
ントロール電圧である。
The figure is an electrical circuit diagram showing an embodiment of the audio circuit of the present invention. 1 is a microcomputer, 8 is a general-purpose headphone jack switch, 13 is a light emitting diode for surround display, and C is a rear volume control voltage for turning on and off the surround.
Claims (1)
機において、マイコン出力を順方向にダイオード
を通して音声ミユート用エミツタ接地の第１のト
ランジスタのベース抵抗の他端とサラウンド表示
用エミツタ接地の第２のトランジスタのベース抵
抗の他端と電源ラインに接続したスイツチの他端
に接続した抵抗とに接続し、前記第２のトランジ
スタのコレクタをエミツタ接地の第３のトランジ
スタのベースと電源ラインに接続した負荷抵抗と
に接続し、同第３のトランジスタのコレクタと電
源ラインの間に発光ダイオードと抵抗を直列に同
発光ダイオードのアノードを電源側にするよう接
続し、前記第１のトランジスタのコレクタ抵抗を
通して音質制御ＩＣとリア音量制御回路とに接続
し、前記スイツチを強制的にオンしてリア側音声
のミユートと前記発光ダイオードのサラウンド表
示をオフしてなる音声回路。 In a television receiver equipped with a surround function for rear speakers, the output of the microcomputer is passed through a diode in the forward direction, and the other end of the base resistance of the first transistor whose emitter is grounded for audio muting is connected to the base resistance of the second transistor whose emitter is grounded for surround display. The other end is connected to a resistor connected to the other end of the switch connected to the power supply line, and the collector of the second transistor is connected to the base of a third transistor whose emitter is grounded and a load resistor connected to the power supply line. A light emitting diode and a resistor are connected in series between the collector of the third transistor and the power supply line, with the anode of the light emitting diode facing the power supply side, and the sound quality control IC and the rear volume are connected through the collector resistor of the first transistor. an audio circuit that is connected to a control circuit and forcibly turns on the switch to turn off mute of rear side audio and surround display of the light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13571589U JPH0375700U (en) | 1989-11-22 | 1989-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13571589U JPH0375700U (en) | 1989-11-22 | 1989-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0375700U true JPH0375700U (en) | 1991-07-30 |
Family
ID=31682963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13571589U Pending JPH0375700U (en) | 1989-11-22 | 1989-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0375700U (en) |
-
1989
- 1989-11-22 JP JP13571589U patent/JPH0375700U/ja active Pending
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