JPS629819U - - Google Patents
Info
- Publication number
- JPS629819U JPS629819U JP9758185U JP9758185U JPS629819U JP S629819 U JPS629819 U JP S629819U JP 9758185 U JP9758185 U JP 9758185U JP 9758185 U JP9758185 U JP 9758185U JP S629819 U JPS629819 U JP S629819U
- Authority
- JP
- Japan
- Prior art keywords
- control element
- voltage
- semiconductor control
- power supply
- load
- 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
- 239000004065 semiconductor Substances 0.000 claims 9
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 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を示す回路図、第２
図は本考案の他の実施例を示す回路図、第３図は
従来の定電圧電源回路の一例を示す回路図である
。
１…ヒユーズ、２，５，１３，２０，３０…ト
ランジスタ、３…負荷、４，６，７，９，１１，
１５，１９，２６，２８…抵抗、８，３３…ツエ
ナーダイオード、１０，１７，３２…コンデンサ
、１２…スイツチ、１６，２５，２７…ダイオー
ド、２２，４２…起動回路、２３，４３…短絡検
出回路、２４，４４…スイツチ回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing another embodiment of the present invention, and FIG. 3 is a circuit diagram showing an example of a conventional constant voltage power supply circuit. 1... Fuse, 2, 5, 13, 20, 30... Transistor, 3... Load, 4, 6, 7, 9, 11,
15, 19, 26, 28... Resistor, 8, 33... Zener diode, 10, 17, 32... Capacitor, 12... Switch, 16, 25, 27... Diode, 22, 42... Starting circuit, 23, 43... Short circuit detection Circuit, 24, 44...switch circuit.
Claims (1)
１の半導体制御素子を介挿するとともに、該第１
の半導体制御素子の制御端に制御用電源を接続し
、負荷電圧に比例した電圧と所定の基準電圧との
偏差に基づいて前記第１の半導体制御素子を制御
して負荷に定電圧を供給するようにした定電圧電
源回路において、前記第１の半導体制御素子の出
力電圧が零電圧になるか又は所定電圧以下に降下
したときにオフ制御される第２の半導体制御素子
を備えた負荷短絡検出回路と、前記第２の半導体
制御素子がオフ制御されたとき前記制御用電源か
ら前記第１の半導体制御素子へ制御信号が供給さ
れるのを阻止する第３の半導体制御素子を備えた
スイツチ回路とを設けたことを特徴とする負荷短
絡保護回路付き定電圧電源回路。 A first semiconductor control element for supplying power supply voltage is inserted in the electric path connecting the main power supply and the load, and the first semiconductor control element
A control power source is connected to a control end of the semiconductor control element, and the first semiconductor control element is controlled based on the deviation between a voltage proportional to the load voltage and a predetermined reference voltage to supply a constant voltage to the load. In the constant voltage power supply circuit, the load short circuit detection includes a second semiconductor control element that is turned off when the output voltage of the first semiconductor control element becomes zero voltage or drops below a predetermined voltage. and a third semiconductor control element that prevents a control signal from being supplied from the control power supply to the first semiconductor control element when the second semiconductor control element is turned off. A constant voltage power supply circuit with a load short-circuit protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9758185U JPS629819U (en) | 1985-06-28 | 1985-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9758185U JPS629819U (en) | 1985-06-28 | 1985-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629819U true JPS629819U (en) | 1987-01-21 |
Family
ID=30964665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9758185U Pending JPS629819U (en) | 1985-06-28 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629819U (en) |
-
1985
- 1985-06-28 JP JP9758185U patent/JPS629819U/ja active Pending