JPH02114348U - - Google Patents
Info
- Publication number
- JPH02114348U JPH02114348U JP2205089U JP2205089U JPH02114348U JP H02114348 U JPH02114348 U JP H02114348U JP 2205089 U JP2205089 U JP 2205089U JP 2205089 U JP2205089 U JP 2205089U JP H02114348 U JPH02114348 U JP H02114348U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- battery
- drive
- outputs
- 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
Landscapes
- Stand-By Power Supply Arrangements (AREA)
Description
図示した回路は、本考案の充電制御回路の一実
施例である。
主な図番の説明、１……駆動用電池、２……昇
圧回路、５……制御回路、９……電源スイツチ、
１０……第１スイツチングトランジスター、１１
……第１制御トランジスター、１５……バツクア
ツプ用充電電池、１８……負荷、１９……第２ス
イツチングトランジスター、２０……第２制御ト
ランジスター、２３……電圧検出回路、２５……
タイマー回路。
The illustrated circuit is one embodiment of the charging control circuit of the present invention. Explanation of main drawing numbers, 1... Drive battery, 2... Boost circuit, 5... Control circuit, 9... Power switch,
10...first switching transistor, 11
...First control transistor, 15...Rechargeable battery for backup, 18...Load, 19...Second switching transistor, 20...Second control transistor, 23...Voltage detection circuit, 25...
timer circuit.
Claims (1)
ていると共に非動作状態にあるとき前記バツクア
ツプ用充電電池より供給される電流によつてバツ
クアツプされる回路が組込まれている制御回路を
有するポータブル電子機器において、電源投入時
閉成される電源スイツチと、該電源スイツチが閉
成されているとき前記駆動用電池から電圧が供給
されると共に昇圧された直流電圧を前記制御回路
及びバツクアツプ用充電電池に供給する昇圧回路
と、前記バツクアツプ用充電電池の充電電圧を検
出すると共に該充電電圧が設定値まで低下したと
き検出信号を出力する電圧検出回路と、該電圧検
出回路より検出信号が出力されたとき動作状態に
なると共に所定時間駆動信号を出力するタイマー
回路と、該タイマー回路より出力される駆動信号
によつて導通状態になると共に前記駆動用電池か
らの電圧を前記昇圧回路に供給するスイツチング
素子とより成るポータブル電子機器の充電制御回
路。 A portable electronic device comprising a drive battery and a backup rechargeable battery, and a control circuit incorporating a circuit that is backed up by a current supplied from the backup battery when in an inactive state, a power switch that is closed when the power is turned on; and a booster that supplies voltage from the drive battery and boosted DC voltage to the control circuit and backup rechargeable battery when the power switch is closed. a voltage detection circuit that detects the charging voltage of the backup rechargeable battery and outputs a detection signal when the charging voltage drops to a set value; and a voltage detection circuit that is activated when the voltage detection circuit outputs the detection signal. A portable device comprising a timer circuit that outputs a drive signal for a predetermined period of time, and a switching element that becomes conductive in response to the drive signal output from the timer circuit and supplies voltage from the drive battery to the booster circuit. Charging control circuit for electronic devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2205089U JPH02114348U (en) | 1989-02-27 | 1989-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2205089U JPH02114348U (en) | 1989-02-27 | 1989-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02114348U true JPH02114348U (en) | 1990-09-13 |
Family
ID=31239819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2205089U Pending JPH02114348U (en) | 1989-02-27 | 1989-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02114348U (en) |
-
1989
- 1989-02-27 JP JP2205089U patent/JPH02114348U/ja active Pending
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