JPH0440313U - - Google Patents
Info
- Publication number
- JPH0440313U JPH0440313U JP7970290U JP7970290U JPH0440313U JP H0440313 U JPH0440313 U JP H0440313U JP 7970290 U JP7970290 U JP 7970290U JP 7970290 U JP7970290 U JP 7970290U JP H0440313 U JPH0440313 U JP H0440313U
- Authority
- JP
- Japan
- Prior art keywords
- section
- control
- switching transistor
- ground line
- input
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案による定電圧回路の一実施例を
示す回路図、第２図は第１図に示す定電圧回路の
動作を説明するための図である。
１１……入力部、１２……出力部、１３……差
電圧検出部、１４……トランジスター、１５……
制御端子。
FIG. 1 is a circuit diagram showing one embodiment of a constant voltage circuit according to the present invention, and FIG. 2 is a diagram for explaining the operation of the constant voltage circuit shown in FIG. 1. 11...Input section, 12...Output section, 13...Differential voltage detection section, 14...Transistor, 15...
Control terminal.
Claims (1)
続される入力部と、出力端子を有し、前記アース
ライン及び前記出力端子とに接続される負荷に電
力を供給する出力部と、前記入力部と前記出力部
との間に配置され、ツエナーダイオードを有し前
記出力部に定電圧を供給する差電圧検出部とを備
える定電圧回路において、前記ツエナーダイオー
ドにスイツチングトランジスターが直列に接続さ
て直列回路が形成され、該直列回路は前記入力端
子及び前記アースラインに接続されており、前記
スイツチングトランジスターをオンオフ制御する
ために用いられる制御端子を有し、該制御端子を
介して前記スイツチングトランジスターをオンオ
フ制御して前記差電圧検出部と前記入力部とを選
択的に連結するようにしたことを特徴たする定電
圧回路。 an input section having a ground line and an input terminal and to which a power source is connected; an output section having an output terminal and supplying power to a load connected to the ground line and the output terminal; and the input section. and a differential voltage detection section having a Zener diode and supplying a constant voltage to the output section, which is disposed between the output section and the output section, wherein a switching transistor is connected in series to the Zener diode, and a switching transistor is connected in series to the Zener diode. A circuit is formed, the series circuit is connected to the input terminal and the ground line, and has a control terminal used to control on/off the switching transistor, and the series circuit is connected to the input terminal and the ground line, and has a control terminal used to control on/off the switching transistor, and the series circuit 1. A constant voltage circuit, characterized in that the differential voltage detection section and the input section are selectively connected by on/off control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079702U JP2546050Y2 (en) | 1990-07-30 | 1990-07-30 | Constant voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990079702U JP2546050Y2 (en) | 1990-07-30 | 1990-07-30 | Constant voltage circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0440313U true JPH0440313U (en) | 1992-04-06 |
| JP2546050Y2 JP2546050Y2 (en) | 1997-08-27 |
Family
ID=31624099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990079702U Expired - Lifetime JP2546050Y2 (en) | 1990-07-30 | 1990-07-30 | Constant voltage circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2546050Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049110A1 (en) * | 2004-11-04 | 2006-05-11 | Rohm Co., Ltd. | Power supply device and mobile device |
| US7626371B2 (en) | 2004-11-04 | 2009-12-01 | Rohm Co., Ltd. | Power supply unit and portable device |
| US7635969B2 (en) | 2004-11-04 | 2009-12-22 | Rohm Co., Ltd. | Power supply unit and portable device |
| JP2010205244A (en) * | 2009-02-27 | 2010-09-16 | Samsung Mobile Display Co Ltd | Power supply unit and organic light emitting display device using the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5197747U (en) * | 1975-02-04 | 1976-08-05 |
-
1990
- 1990-07-30 JP JP1990079702U patent/JP2546050Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5197747U (en) * | 1975-02-04 | 1976-08-05 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049110A1 (en) * | 2004-11-04 | 2006-05-11 | Rohm Co., Ltd. | Power supply device and mobile device |
| US7626371B2 (en) | 2004-11-04 | 2009-12-01 | Rohm Co., Ltd. | Power supply unit and portable device |
| US7635969B2 (en) | 2004-11-04 | 2009-12-22 | Rohm Co., Ltd. | Power supply unit and portable device |
| US8120344B2 (en) | 2004-11-04 | 2012-02-21 | Rohm Co., Ltd. | Power supply unit and portable device |
| JP2010205244A (en) * | 2009-02-27 | 2010-09-16 | Samsung Mobile Display Co Ltd | Power supply unit and organic light emitting display device using the same |
| US8817003B2 (en) | 2009-02-27 | 2014-08-26 | Samsung Display Co., Ltd. | Power supply unit and organic light emitting display device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2546050Y2 (en) | 1997-08-27 |