JPH02119717U - - Google Patents
Info
- Publication number
- JPH02119717U JPH02119717U JP2646389U JP2646389U JPH02119717U JP H02119717 U JPH02119717 U JP H02119717U JP 2646389 U JP2646389 U JP 2646389U JP 2646389 U JP2646389 U JP 2646389U JP H02119717 U JPH02119717 U JP H02119717U
- Authority
- JP
- Japan
- Prior art keywords
- drive
- current
- detection resistor
- current detection
- photocoupler
- 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 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Protection Of Static Devices (AREA)
Description
第１図は本考案の一実施例を示す回路図である
。
１……入力端子、２……出力端子、３，４……
トランジスタ、５……シヤントレギユレータ、６
〜１２……抵抗、１３……ホトカプラ。
FIG. 1 is a circuit diagram showing an embodiment of the present invention. 1...Input terminal, 2...Output terminal, 3, 4...
Transistor, 5... Shunt regulator, 6
~12...Resistance, 13...Photocoupler.
Claims (1)
検出用抵抗と前記電流検出用抵抗の両端に発生す
る検出電圧にもとづいて前記制御素子の駆動端子
に駆動電流を供給する駆動回路とを含むシリーズ
レギユレータの保護回路において、前記電流検出
用抵抗の両端にホトカプラの発光部を接続し、前
記駆動回路の駆動電流供給系に前記ホトカプラの
受光部を接続して前記駆動電流をバイパスさせる
バイパス手段を含むことを特徴とするシリーズレ
ギユレータの保護回路。 A series regulator including a control element inserted in series in a power supply line, a current detection resistor, and a drive circuit that supplies a drive current to a drive terminal of the control element based on a detection voltage generated across the current detection resistor. In the protection circuit of the generator, a light emitting part of a photocoupler is connected to both ends of the current detection resistor, and a light receiving part of the photocoupler is connected to a drive current supply system of the drive circuit, thereby bypassing the drive current. A protection circuit for a series regulator, characterized in that it includes:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2646389U JPH02119717U (en) | 1989-03-07 | 1989-03-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2646389U JPH02119717U (en) | 1989-03-07 | 1989-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02119717U true JPH02119717U (en) | 1990-09-27 |
Family
ID=31248112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2646389U Pending JPH02119717U (en) | 1989-03-07 | 1989-03-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02119717U (en) |
-
1989
- 1989-03-07 JP JP2646389U patent/JPH02119717U/ja active Pending