JPS61168423U - - Google Patents
Info
- Publication number
- JPS61168423U JPS61168423U JP5011385U JP5011385U JPS61168423U JP S61168423 U JPS61168423 U JP S61168423U JP 5011385 U JP5011385 U JP 5011385U JP 5011385 U JP5011385 U JP 5011385U JP S61168423 U JPS61168423 U JP S61168423U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- supply voltage
- holding
- switching transistor
- 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
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
- Dc-Dc Converters (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の実施例を示す回路図、第２図
はタイミングチヤートである。
なお図面に用いた符号において、１……電源ス
イツチ、２……電池、Ｑ１……起動用トランジス
タ、Ｑ２……スイツチングトランジスタ、Ｑ３…
…保持用トランジスタ、５……ＣＰＵ、Ｄ２……
ダイオード、Ｃ３……コンデンサ、Ｒ６……抵抗
、７……キーボードである。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a timing chart. In the symbols used in the drawings, 1...power switch, 2...battery, Q1...starting transistor, Q2 ... switching transistor, Q3 ...
...Holding transistor, 5...CPU, D2 ...
Diode, C3 ...capacitor, R6 ...resistor, 7...keyboard.
Claims (1)
トランジスタと、 上記起動用トランジスタにより導通されて上記
電源電圧を負荷に供給するスイツチングトランジ
スタと、 上記電源電圧の供給を受けて導通されることに
より、上記スイツチングトランジスタの導通状態
を保持する保持用トランジスタと、 上記保持用トランジスタのベースに接続される
時定数回路と、 上記電源電圧の供給を受けると共にキー操作が
所定時間無いときに所定レベルの制御信号を出力
するマイコンと、 上記制御信号を上記保持用のトランジスタのベ
ースに加えるダイオードと、 から成る電源制御装置。[Claims for Utility Model Registration] A starting transistor that conducts for a predetermined time when the power is turned on; a switching transistor that is made conductive by the starting transistor and supplies the power supply voltage to a load; and a switching transistor that supplies the power supply voltage to a load. a holding transistor that maintains the conducting state of the switching transistor by being made conductive by receiving the power supply voltage; a time constant circuit connected to the base of the holding transistor; A power supply control device comprising: a microcomputer that outputs a control signal at a predetermined level when there is no time; and a diode that applies the control signal to the base of the holding transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5011385U JPS61168423U (en) | 1985-04-04 | 1985-04-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5011385U JPS61168423U (en) | 1985-04-04 | 1985-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61168423U true JPS61168423U (en) | 1986-10-18 |
Family
ID=30567939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5011385U Pending JPS61168423U (en) | 1985-04-04 | 1985-04-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61168423U (en) |
-
1985
- 1985-04-04 JP JP5011385U patent/JPS61168423U/ja active Pending