JPS6365310U - - Google Patents
Info
- Publication number
- JPS6365310U JPS6365310U JP15923186U JP15923186U JPS6365310U JP S6365310 U JPS6365310 U JP S6365310U JP 15923186 U JP15923186 U JP 15923186U JP 15923186 U JP15923186 U JP 15923186U JP S6365310 U JPS6365310 U JP S6365310U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power switch
- power
- switch
- mute
- 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
- 238000001514 detection method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Amplifiers (AREA)
Description
第１図はこの考案のミユーテイング回路のブロ
ツク図、第２図はこのミユーテイング回路の具体
的な回路図、第３図は従来のミユーテイング回路
図である。
１…直流電源（バツテリー）、２…自動車のＡ
ＣＣスイツチ、３…電源スイツチ、４…スイツチ
ング回路、４ａ…直流電源に電源スイツチを介さ
ずに接続された一端、４ｂ…電源ラインａに接続
された他端、４ｃ…制御端子、５…スイツチング
回路の駆動回路、５ａ…電源スイツチ３に接続さ
れた一端、５ｂ…スイツチング回路に接続された
他端、６…電源スイツチのオン・オフの検出回路
、６ａ…ラインｂを介して電源スイツチ３に接続
された一端、６ｂ…検出信号の出力端、６ｃ…電
源ラインａに接続された電源端子、７…ミユート
駆動回路、７ａ…前記検出信号の出力端に接続さ
れた一端、７ｂ…駆動信号の出力端、７ｃ…電源
ラインａに接続された電源端子、８…ミユート用
ＮＰＮトランジスタ、ｓ…信号ライン、Ｅ…アー
スライン。
FIG. 1 is a block diagram of the muting circuit of this invention, FIG. 2 is a specific circuit diagram of this muting circuit, and FIG. 3 is a conventional muting circuit diagram. 1...DC power supply (battery), 2...Car A
CC switch, 3...Power switch, 4...Switching circuit, 4a...One end connected to a DC power source without a power switch, 4b...Other end connected to power line a, 4c...Control terminal, 5...Switching circuit 5a... One end connected to the power switch 3, 5b... The other end connected to the switching circuit, 6... Power switch on/off detection circuit, 6a... Connected to the power switch 3 via line b. 6b... Output end of the detection signal, 6c... Power supply terminal connected to power line a, 7... Mute drive circuit, 7a... One end connected to the output end of the detection signal, 7b... Output of the drive signal. End, 7c... Power supply terminal connected to power line a, 8... NPN transistor for mute, s... Signal line, E... Earth line.
Claims (1)
ン状態となり、電源スイツチをオフにしたときは
所定時間遅れてオフ状態となるスイツチング回路
を直流電源に前記電源スイツチを介さずに接続し
、前記スイツチング回路の駆動回路を前記スイツ
チング回路に接続するとともに、電源スイツチを
介して直流電源に接続し、電源スイツチのオン・
オフの検出回路を前記直流電源から前記電源スイ
ツチを介したラインに接続するとともに、電源ス
イツチのオン・オフの検出回路の出力端をミユー
ト駆動回路に接続し、このミユート駆動回路の出
力端をベースに接続しこのミユート駆動回路の動
作によりオン状態になるミユート用トランジスタ
を信号ラインとアースラインとの間に接続し、前
記電源スイツチのオン・オフの検出回路およびミ
ユート駆動回路の電源ラインを前記スイツチング
回路に接続したことを特徴とするミユーテイング
回路。 A switching circuit that turns on almost instantly when a power switch is turned on and turns off after a predetermined time delay when the power switch is turned off is connected to a DC power source without going through the power switch, and the switching circuit The drive circuit is connected to the switching circuit, and also connected to a DC power supply via a power switch, and the power switch is turned on and off.
An OFF detection circuit is connected to the line from the DC power source through the power switch, and the output terminal of the ON/OFF detection circuit of the power switch is connected to the Mute drive circuit, and the output terminal of this Mute drive circuit is connected to the base. A mute transistor that is connected to the switch and turned on by the operation of the mute drive circuit is connected between the signal line and the ground line, and the on/off detection circuit of the power switch and the power line of the mute drive circuit are connected to the switch. A mutating circuit characterized by being connected to a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15923186U JPS6365310U (en) | 1986-10-17 | 1986-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15923186U JPS6365310U (en) | 1986-10-17 | 1986-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6365310U true JPS6365310U (en) | 1988-04-30 |
Family
ID=31083469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15923186U Pending JPS6365310U (en) | 1986-10-17 | 1986-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6365310U (en) |
-
1986
- 1986-10-17 JP JP15923186U patent/JPS6365310U/ja active Pending