JPS6358847U - - Google Patents
Info
- Publication number
- JPS6358847U JPS6358847U JP15321986U JP15321986U JPS6358847U JP S6358847 U JPS6358847 U JP S6358847U JP 15321986 U JP15321986 U JP 15321986U JP 15321986 U JP15321986 U JP 15321986U JP S6358847 U JPS6358847 U JP S6358847U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- switching transistor
- switch
- supply terminal
- base
- 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
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
Description
第１図はこの考案の電源供給回路を備えた例え
ばカーステレオ再生装置の信号系および電源供給
系の系統図、第２図はこの考案の電源供給回路の
実施例を示す図、第３図は従来のカーステレオ再
生装置の信号系および電源供給系の系統図を示す
ものである。
……前段増幅部、……後段増幅部、９……
電源スイツチ、９ａ……電源ライン、１３……電
源供給回路、１３ａ……遅延回路、１４……自動
車のＡＣＣスイツチ、１５……バツテリー、１６
……前段増幅部の電源端子、Ｑ１……スイツチ
ングトランジスタ、Ｑ２，Ｑ３……トランジスタ
、Ｃ３，Ｃ４……コンデンサ、Ｒ１，Ｒ２，Ｒ３
，Ｒ４，Ｒ５，Ｒ６，Ｒ７，Ｒ８，Ｒ９……抵抗
、Ｄ１，Ｄ３……ダイオード、Ｄ２……ツエナー
ダイオード。
Fig. 1 is a system diagram of the signal system and power supply system of, for example, a car stereo playback device equipped with the power supply circuit of this invention, Fig. 2 is a diagram showing an embodiment of the power supply circuit of this invention, and Fig. 3 is a diagram showing an embodiment of the power supply circuit of this invention. 1 shows a system diagram of a signal system and a power supply system of a conventional car stereo playback device. ...Pre-stage amplification section, ...post-stage amplification section, 9...
Power switch, 9a... Power line, 13... Power supply circuit, 13a... Delay circuit, 14... Car ACC switch, 15... Battery, 16
. . . Power supply terminal of the front stage amplifier section, Q 1 . . . Switching transistor, Q 2 , Q 3 . . . Transistor, C 3 , C 4 .
, R 4 , R 5 , R 6 , R 7 , R 8 , R 9 ...resistance, D 1 , D 3 ... diode, D 2 ... Zener diode.
Claims (1)
を介さずにスイツチングトランジスタのエミツタ
とコレクタとを介して接続するとともに、このス
イツチングトランジスタのベースに電源スイツチ
をオフにしてから所定時間遅れてベースバイアス
がオフ状態となる遅延回路を接続してなる電源供
給回路。 The DC power supply and the power supply terminal of the preamplifier section are connected through the emitter and collector of the switching transistor without going through the power supply switch, and the power supply terminal is connected to the base of the switching transistor after a predetermined time delay after the power switch is turned off. A power supply circuit connected to a delay circuit that turns the base bias off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15321986U JPS6358847U (en) | 1986-10-06 | 1986-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15321986U JPS6358847U (en) | 1986-10-06 | 1986-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6358847U true JPS6358847U (en) | 1988-04-19 |
Family
ID=31071905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15321986U Pending JPS6358847U (en) | 1986-10-06 | 1986-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6358847U (en) |
-
1986
- 1986-10-06 JP JP15321986U patent/JPS6358847U/ja active Pending
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