JPH0482712U - - Google Patents
Info
- Publication number
- JPH0482712U JPH0482712U JP12442890U JP12442890U JPH0482712U JP H0482712 U JPH0482712 U JP H0482712U JP 12442890 U JP12442890 U JP 12442890U JP 12442890 U JP12442890 U JP 12442890U JP H0482712 U JPH0482712 U JP H0482712U
- Authority
- JP
- Japan
- Prior art keywords
- main control
- zener diode
- becomes conductive
- control transistor
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例による安定化電源
回路の構成を示す図、第２図は従来の安定化電源
回路の構成を示す図である。
１……入力端子、２……出力トランジスタ（主
制御トランジスタ）、７……負荷電流検出抵抗、
８……負荷、９……補助トランジスタ、１２……
ツエナダイオード。なお、図中の同一符号は同一
または相当部分を示す。
FIG. 1 is a diagram showing the configuration of a stabilized power supply circuit according to an embodiment of the invention, and FIG. 2 is a diagram showing the configuration of a conventional stabilized power supply circuit. 1...Input terminal, 2...Output transistor (main control transistor), 7...Load current detection resistor,
8...Load, 9...Auxiliary transistor, 12...
Zener diode. Note that the same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
タのコレクタ−エミツタに直列に接続される過電
流検出手段としての抵抗と、この抵抗の電圧降下
分が所定値以上になると導通するツエナダイオー
ドと、このツエナダイオードが導通することで導
通する補助トランジスタとを備え、上記抵抗の電
圧降下分が所定値以上になつたときに上記ツエナ
ダイオードおよび補助トランジスタをそれぞれ導
通させることにより上記主制御トランジスタのベ
ース電流を制限させて過負荷電流を制限するよう
に構成したことを特徴とする安定化電源回路。 A main control transistor, a resistor as an overcurrent detection means connected in series between the collector and emitter of this main control transistor, a Zener diode that becomes conductive when the voltage drop across this resistor exceeds a predetermined value, and this Zener diode. and an auxiliary transistor that becomes conductive when it becomes conductive, and limits the base current of the main control transistor by making the Zener diode and the auxiliary transistor conductive when the voltage drop across the resistor exceeds a predetermined value. A stabilized power supply circuit configured to limit overload current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12442890U JPH0482712U (en) | 1990-11-26 | 1990-11-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12442890U JPH0482712U (en) | 1990-11-26 | 1990-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0482712U true JPH0482712U (en) | 1992-07-17 |
Family
ID=31872080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12442890U Pending JPH0482712U (en) | 1990-11-26 | 1990-11-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0482712U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009161167A (en) * | 2008-01-07 | 2009-07-23 | Converteam Technology Ltd | Power distribution/propulsion system for marine vessel |
-
1990
- 1990-11-26 JP JP12442890U patent/JPH0482712U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009161167A (en) * | 2008-01-07 | 2009-07-23 | Converteam Technology Ltd | Power distribution/propulsion system for marine vessel |
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