JPS6274457U - - Google Patents
Info
- Publication number
- JPS6274457U JPS6274457U JP1985164431U JP16443185U JPS6274457U JP S6274457 U JPS6274457 U JP S6274457U JP 1985164431 U JP1985164431 U JP 1985164431U JP 16443185 U JP16443185 U JP 16443185U JP S6274457 U JPS6274457 U JP S6274457U
- Authority
- JP
- Japan
- Prior art keywords
- charging
- battery
- light emitting
- emitting diode
- voltage
- 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 6
Description
第１図はこの考案の第１の実施例の回路図、第
２図はこの考案の第２の実施例の回路図、第３図
はこの考案の第３の実施例の回路図、第４図は従
来の充電モニタ付充電回路の回路図、第５図は別
の従来の充電モニタ付充電回路の回路図である。
……充電用電源、……充電制御回路、Ｂ…
…電池、ＬＥＤ……発光ダイオード、Ｑ１……ト
ランジスタ、Ｒ９……抵抗、ＳＫ……積分回路、
ＯＰ２……演算増幅器。
Fig. 1 is a circuit diagram of a first embodiment of this invention, Fig. 2 is a circuit diagram of a second embodiment of this invention, Fig. 3 is a circuit diagram of a third embodiment of this invention, and Fig. 4 is a circuit diagram of a third embodiment of this invention. This figure is a circuit diagram of a conventional charging circuit with a charge monitor, and FIG. 5 is a circuit diagram of another conventional charging circuit with a charge monitor. ...charging power supply, ...charging control circuit, B...
...Battery, LED...Light emitting diode, Q1 ...Transistor, R9 ...Resistor, SK...Integrator circuit,
OP2 ...Operation amplifier.
Claims (1)
前記電池の充電時に通電されて点灯する充電表示
用の発光ダイオードと、前記充電電流に応じた電
圧と基準電圧となる前記発光ダイオードの順電圧
とを比較しこの比較結果に基づいて前記充電電流
を制御する充電制御回路とを備えた充電回路。 (2) 前記充電制御回路は、前記充電用電源と前
記電池の間に直列介挿したトランジスタと、前記
充電電流を検出する抵抗と、この抵抗の両端電圧
を積分して平均化する積分回路と、この積分回路
の出力電圧と前記発光ダイオードの順電圧とを比
較しこの比較結果に応じて前記トランジスタをオ
ンオフさせる演算増幅器とから構成されている実
用新案登録請求の範囲第(1)項記載の充電回路。 (3) 前記充電制御回路は、前記充電用電源と前
記電池との間に直列介挿したトランジスタからな
り、このトランジスタのベース・エミツタ間に前
記発光ダイオードを接続している実用新案登録請
求の範囲第(1)項記載の充電回路。[Scope of claims for utility model registration] (1) A charging power source that supplies charging current to a battery;
A light emitting diode for displaying charging that is energized and lit when charging the battery is compared with a voltage corresponding to the charging current and a forward voltage of the light emitting diode serving as a reference voltage, and the charging current is adjusted based on the comparison result. A charging circuit comprising a charging control circuit for controlling. (2) The charging control circuit includes a transistor inserted in series between the charging power source and the battery, a resistor that detects the charging current, and an integrating circuit that integrates and averages the voltage across the resistor. and an operational amplifier that compares the output voltage of the integrating circuit with the forward voltage of the light emitting diode and turns on and off the transistor according to the comparison result. charging circuit. (3) The charging control circuit includes a transistor inserted in series between the charging power source and the battery, and the light emitting diode is connected between the base and emitter of this transistor. The charging circuit described in paragraph (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985164431U JPS6274457U (en) | 1985-10-25 | 1985-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985164431U JPS6274457U (en) | 1985-10-25 | 1985-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6274457U true JPS6274457U (en) | 1987-05-13 |
Family
ID=31093543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985164431U Pending JPS6274457U (en) | 1985-10-25 | 1985-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6274457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62100137A (en) * | 1985-10-25 | 1987-05-09 | 松下電工株式会社 | Charging circuit |
-
1985
- 1985-10-25 JP JP1985164431U patent/JPS6274457U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62100137A (en) * | 1985-10-25 | 1987-05-09 | 松下電工株式会社 | Charging circuit |