JPS6416143U - - Google Patents
Info
- Publication number
- JPS6416143U JPS6416143U JP10925287U JP10925287U JPS6416143U JP S6416143 U JPS6416143 U JP S6416143U JP 10925287 U JP10925287 U JP 10925287U JP 10925287 U JP10925287 U JP 10925287U JP S6416143 U JPS6416143 U JP S6416143U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- control
- detection
- base
- charging
- 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 7
Description
図示した回路は、本考案の充電回路の一実施例
である。
主な図番の説明、５……直流電源回路、６……
鉛電池、７……充電端子、９……充電用トランジ
スター、１０……検出用抵抗、１２……第１制御
トランジスター、１５……第２制御トランジスタ
ー、１７……ツエナーダイオード、１８……検出
用トランジスター。
The illustrated circuit is one embodiment of the charging circuit of the present invention. Explanation of main drawing numbers, 5 ...DC power supply circuit, 6...
Lead battery, 7... Charging terminal, 9... Charging transistor, 10... Detection resistor, 12... First control transistor, 15... Second control transistor, 17... Zener diode, 18... For detection transistor.
Claims (1)
にコレクタが検出用抵抗を介して充電端子に接続
され、且つＰＮＰ型の充電用トランジスターと、
該充電用トランジスターのベースバイアスを制御
するべく接続されていると共にベースが抵抗を介
して前記直流電源回路に接続されている第１制御
トランジスターと、該第１制御トランジスターの
ベースバイアスを制御するべく接続されていると
共にベースが抵抗及びツエナーダイオードを介し
て前記充電端子に接続されている第２制御トラン
ジスターと、前記検出用抵抗の両端の電位差を検
出すると共に該電位差が大のとき導通する検出用
トランジスターとより成り、前記検出用トランジ
スターが導通状態にあるとき該検出用トランジス
ターのエミツタ・コレクタ間を通して前記第２制
御トランジスターのベースにバイアス電流を供給
するようにしたことを特徴とする充電回路。 a PNP type charging transistor whose emitter is connected to a DC power supply circuit and whose collector is connected to a charging terminal via a detection resistor;
a first control transistor connected to control the base bias of the charging transistor and whose base is connected to the DC power supply circuit via a resistor; and a first control transistor connected to control the base bias of the first control transistor. a second control transistor whose base is connected to the charging terminal through a resistor and a Zener diode; and a detection transistor which detects a potential difference between both ends of the detection resistor and becomes conductive when the potential difference is large. A charging circuit characterized in that, when the detection transistor is in a conductive state, a bias current is supplied to the base of the second control transistor through the emitter and collector of the detection transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10925287U JPS6416143U (en) | 1987-07-16 | 1987-07-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10925287U JPS6416143U (en) | 1987-07-16 | 1987-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6416143U true JPS6416143U (en) | 1989-01-26 |
Family
ID=31345326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10925287U Pending JPS6416143U (en) | 1987-07-16 | 1987-07-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6416143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE40468E1 (en) | 1994-05-24 | 2008-08-26 | Sony Corporation | Video data bus communication system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52142235A (en) * | 1976-05-21 | 1977-11-28 | Sawafuji Electric Co Ltd | Dc power supply |
| JPS5893435A (en) * | 1981-11-26 | 1983-06-03 | 株式会社日立製作所 | Charging circuit |
-
1987
- 1987-07-16 JP JP10925287U patent/JPS6416143U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52142235A (en) * | 1976-05-21 | 1977-11-28 | Sawafuji Electric Co Ltd | Dc power supply |
| JPS5893435A (en) * | 1981-11-26 | 1983-06-03 | 株式会社日立製作所 | Charging circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE40468E1 (en) | 1994-05-24 | 2008-08-26 | Sony Corporation | Video data bus communication system and method |