JPS5963716U - Stabilized DC power supply - Google Patents
Stabilized DC power supplyInfo
- Publication number
- JPS5963716U JPS5963716U JP15770382U JP15770382U JPS5963716U JP S5963716 U JPS5963716 U JP S5963716U JP 15770382 U JP15770382 U JP 15770382U JP 15770382 U JP15770382 U JP 15770382U JP S5963716 U JPS5963716 U JP S5963716U
- Authority
- JP
- Japan
- Prior art keywords
- fet
- voltage
- overcurrent detection
- stabilized
- power supply
- 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
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の安定化直流電源の概略接続図、第２図は
この考案の一実施例を示す概略の接続図 ゛である。
図中１は安定化直流電源、２は基準電圧発生部、３は電
圧比較検知用コンパレータ、４は制御用パワートランジ
スタ、５は上記の基準電圧発生部２と電圧比較検知用コ
ンパレータ３と制御用パワートランジスタ４から成る電
圧安定化部、６は過電流検知用トランジスタ、７は電圧
検知用分圧抵抗、８は過電流検知用抵抗、９は負荷、１
ｏは第１の過電流検知用トランジスタ、１１は第２の過
電流検知用トランジスタ、１２は第１のＦＥＴ、１３は
第２のＦＥＴ、ｌ ４は選択切換部である。なお、図中
、同一あるいは相当部分には同一符号を付して示しであ
る。FIG. 1 is a schematic connection diagram of a conventional stabilized DC power supply, and FIG. 2 is a schematic connection diagram showing an embodiment of this invention. In the figure, 1 is a stabilized DC power supply, 2 is a reference voltage generation section, 3 is a comparator for voltage comparison detection, 4 is a power transistor for control, and 5 is the reference voltage generation section 2 and the comparator 3 for voltage comparison detection and control. A voltage stabilizing section consisting of a power transistor 4, 6 a transistor for overcurrent detection, 7 a voltage dividing resistor for voltage detection, 8 a resistor for overcurrent detection, 9 a load, 1
o is a first overcurrent detection transistor, 11 is a second overcurrent detection transistor, 12 is a first FET, 13 is a second FET, and l4 is a selection switching section. In the drawings, the same or corresponding parts are designated by the same reference numerals.
Claims (1)
圧検知用分圧抵抗と、上記電圧検知用分圧抵抗につなが
る第１の過電流検知用トランジスタと、上記電圧検知用
分圧抵抗につながる第２の過電流検知用トランジスタと
ζ上記電圧安定化部と第１の過電流検知用トランジスタ
との間に設けた第１のＦＥＴ（電界効果トランジスタ）
と、上記電圧安定化部と、第２の過電流検知用トランジ
スタとの間に設けた第２のＦＥＴと、 上記第１のＦＥＴと第２のＦＥＴにつながる選択切換部
と、上記第１、第２のＦＥＴに対して選択信号を与える
選択切換部を有し、負荷電流に応じ一″で、選択切換部
からの選択信号を上記第１°のＦＥＴに加え、上記第１
のＦＥＴと第２のＦＥＴの一方をＯＮとし、他方をＯＦ
Ｆとすることにより、電流制限特性の選択切換を可能に
したことを特徴とする安定化直流電源。[Scope of Claim for Utility Model Registration] An overcurrent detection resistor and voltage detection voltage dividing resistor connected to the output of the voltage stabilizing section, a first overcurrent detection transistor connected to the voltage sensing voltage dividing resistor, and the above-mentioned a second overcurrent detection transistor connected to the voltage detection voltage dividing resistor; and a first FET (field effect transistor) provided between the voltage stabilizing section and the first overcurrent detection transistor.
a second FET provided between the voltage stabilizing section and the second overcurrent detection transistor; a selection switching section connected to the first FET and the second FET; It has a selection switching section that gives a selection signal to the second FET, and at 1'' depending on the load current, the selection signal from the selection switching section is applied to the first FET.
One of the FET and the second FET is turned on, and the other is turned off.
1. A stabilized DC power supply characterized in that by selecting F, it is possible to select and switch current limiting characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15770382U JPS5963716U (en) | 1982-10-19 | 1982-10-19 | Stabilized DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15770382U JPS5963716U (en) | 1982-10-19 | 1982-10-19 | Stabilized DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5963716U true JPS5963716U (en) | 1984-04-26 |
Family
ID=30347615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15770382U Pending JPS5963716U (en) | 1982-10-19 | 1982-10-19 | Stabilized DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5963716U (en) |
-
1982
- 1982-10-19 JP JP15770382U patent/JPS5963716U/en active Pending
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