JPH01171538U - - Google Patents
Info
- Publication number
- JPH01171538U JPH01171538U JP6603888U JP6603888U JPH01171538U JP H01171538 U JPH01171538 U JP H01171538U JP 6603888 U JP6603888 U JP 6603888U JP 6603888 U JP6603888 U JP 6603888U JP H01171538 U JPH01171538 U JP H01171538U
- Authority
- JP
- Japan
- Prior art keywords
- battery
- power supply
- signal
- means detects
- supply control
- 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 2
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910005580 NiCd Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Landscapes
- Power Sources (AREA)
- Protection Of Static Devices (AREA)
Description
第１図はこの考案の一実施例であるハンドヘル
ドコンピユータの電源制御回路の構成を示すブロ
ツク図、第２図は第１図の電源制御回路を内蔵し
たハンドヘルドコンピユータの外観を示す斜視図
、第３図は同じくその制御部のシステム構成を示
すブロツク図である。
１……キーボード、２……液晶デイスプレイ装
置（ＬＣＤ）、３……プリンタ、４……ロール紙
ホルダ、５……バツテリパツク、６……充電用コ
ネクタ、７……電源スイツチ、８……装置本体、
１１……メインバツテリ（ＮｉＣｄ電池）、１２
……バツクアツブバツテリ（リチウム電池）、１
３，１４……スイツチ回路、１５〜１８……電圧
検出部、２１……メイン電源ＯＮ／ＯＦＦ制御部
、４１……電源制御回路。
Fig. 1 is a block diagram showing the configuration of a power control circuit of a handheld computer that is an embodiment of this invention, Fig. 2 is a perspective view showing the external appearance of a handheld computer incorporating the power control circuit of Fig. 1, and Fig. 3 The figure is also a block diagram showing the system configuration of the control section. 1...Keyboard, 2...Liquid crystal display device (LCD), 3...Printer, 4...Roll paper holder, 5...Battery pack, 6...Charging connector, 7...Power switch, 8...Device main body ,
11... Main battery (NiCd battery), 12
...Battery (lithium battery), 1
3, 14... Switch circuit, 15-18... Voltage detection section, 21... Main power ON/OFF control section, 41... Power supply control circuit.
Claims (1)
リの供給電圧を検出してその検出電圧が予め設定
した限界値以下になつた時に信号を出力するバツ
テリ状態検出手段と、該手段からの信号により前
記バツテリによるメイン電源供給回路を遮断する
メイン電源制御手段とを設けたことを特徴とする
電源制御回路。 In a battery-driven electronic device, a battery status detection means detects the supply voltage of the battery and outputs a signal when the detected voltage becomes less than a preset limit value, and a signal from the means detects the supply voltage of the battery. A power supply control circuit comprising main power supply control means for cutting off a power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6603888U JPH01171538U (en) | 1988-05-19 | 1988-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6603888U JPH01171538U (en) | 1988-05-19 | 1988-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01171538U true JPH01171538U (en) | 1989-12-05 |
Family
ID=31291456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6603888U Pending JPH01171538U (en) | 1988-05-19 | 1988-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01171538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010259120A (en) * | 2010-08-19 | 2010-11-11 | Buffalo Inc | Router device |
-
1988
- 1988-05-19 JP JP6603888U patent/JPH01171538U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010259120A (en) * | 2010-08-19 | 2010-11-11 | Buffalo Inc | Router device |
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