JPH03110524U - - Google Patents
Info
- Publication number
- JPH03110524U JPH03110524U JP1749190U JP1749190U JPH03110524U JP H03110524 U JPH03110524 U JP H03110524U JP 1749190 U JP1749190 U JP 1749190U JP 1749190 U JP1749190 U JP 1749190U JP H03110524 U JPH03110524 U JP H03110524U
- Authority
- JP
- Japan
- Prior art keywords
- base
- power supply
- transistor
- zener diode
- main 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 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の一実施例に係る電源制御回路
の具体的回路図、第２図及び第３図は従来の電源
制御回路の回路図である。
Ｌ１……電源ライン、Ｌ２……出力ライン、Ｔ
ｒ１……メイントランジスタ、Ｔｒ２……ベース
電流調整用トランジスタ、Ｔｒ３……制御用トラ
ンジスタ、Ｒ１……駆動抵抗、Ｒ２……遮断抵抗
、Ｒ４，Ｒ５……分圧抵抗、Ｒ６……電流制限抵
抗、Ｄ１，Ｄ２……ツエナーダイオード、Ｃ１…
…平滑コンデンサ、Ｃ２……出力コンデンサ。
FIG. 1 is a specific circuit diagram of a power supply control circuit according to an embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams of conventional power supply control circuits. L1...Power line, L2...Output line, T
r1... Main transistor, Tr2... Base current adjustment transistor, Tr3... Control transistor, R1... Driving resistor, R2... Cutting off resistor, R4, R5... Voltage dividing resistor, R6... Current limiting resistor, D1, D2... Zener diode, C1...
...Smoothing capacitor, C2...Output capacitor.
Claims (1)
にエミツタが接続されたメイントランジスタと、 前記メイントランジスタのベースと前記電源ラ
インとの間に接続された抵抗値の大きな電流制限
抵抗と、 アノードがアースに接続され、カソードが前記
電流制限抵抗と前記メイントランジスタのベース
との接続点に接続されたツエナーダイオードと、 前記電源ラインと前記メイントランジスタのベ
ースとの間に挿入された、抵抗値の小さな駆動抵
抗及びベース電流調整用トランジスタからなる直
列回路と、 前記ベース電流調整用トランジスタのベースに
コレクタが接続され、エミツタがアースに接続さ
れた制御用トランジスタと、 前記制御用トランジスタのベースにアノードが
接続され、カソードが前記出力ラインに接続され
たツエナーダイオードとを備えたことを特徴とす
る電源制御回路。[Claims for Utility Model Registration] A main transistor whose collector is connected to a power supply line and whose emitter is connected to an output line, and a current limiter with a large resistance value connected between the base of the main transistor and the power supply line. a resistor; a Zener diode having an anode connected to ground and a cathode connected to a connection point between the current limiting resistor and the base of the main transistor; and a Zener diode inserted between the power supply line and the base of the main transistor. , a series circuit consisting of a drive resistor with a small resistance value and a base current adjustment transistor; a control transistor whose collector is connected to the base of the base current adjustment transistor and whose emitter is connected to ground; A power supply control circuit comprising: a Zener diode having an anode connected to a base and a cathode connected to the output line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1749190U JPH03110524U (en) | 1990-02-23 | 1990-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1749190U JPH03110524U (en) | 1990-02-23 | 1990-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03110524U true JPH03110524U (en) | 1991-11-13 |
Family
ID=31520699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1749190U Pending JPH03110524U (en) | 1990-02-23 | 1990-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03110524U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136091A (en) * | 2004-11-04 | 2006-05-25 | Funai Electric Co Ltd | Multi-output power supply |
| JP2006350722A (en) * | 2005-06-16 | 2006-12-28 | Ricoh Co Ltd | Constant voltage circuit |
-
1990
- 1990-02-23 JP JP1749190U patent/JPH03110524U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006136091A (en) * | 2004-11-04 | 2006-05-25 | Funai Electric Co Ltd | Multi-output power supply |
| JP4534722B2 (en) * | 2004-11-04 | 2010-09-01 | 船井電機株式会社 | Multi-output power supply |
| JP2006350722A (en) * | 2005-06-16 | 2006-12-28 | Ricoh Co Ltd | Constant voltage circuit |
| JP4688581B2 (en) * | 2005-06-16 | 2011-05-25 | 株式会社リコー | Constant voltage circuit |