JPS62185490U - - Google Patents
Info
- Publication number
- JPS62185490U JPS62185490U JP7115786U JP7115786U JPS62185490U JP S62185490 U JPS62185490 U JP S62185490U JP 7115786 U JP7115786 U JP 7115786U JP 7115786 U JP7115786 U JP 7115786U JP S62185490 U JPS62185490 U JP S62185490U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- photocoupler
- voltage
- ref terminal
- resistor
- 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 4
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Voltage And Current In General (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の絶縁形コンバータの出力電圧
検出回路の回路図、第２図は従来の絶縁形コンバ
ータの出力電圧検出回路の回路図である。
１，１′……入力端子、２，２′……出力端子
、５……トランス、６……フオトカプラ、７……
シヤントレギユレータ、８，９，１０，１２……
抵抗、１３……コンデンサ。
FIG. 1 is a circuit diagram of an output voltage detection circuit of an isolated converter according to the present invention, and FIG. 2 is a circuit diagram of an output voltage detection circuit of a conventional isolated converter. 1, 1'...Input terminal, 2, 2'...Output terminal, 5...Transformer, 6...Photocoupler, 7...
Shun regulator, 8, 9, 10, 12...
Resistor, 13... Capacitor.
Claims (1)
チングトランジスタのオン、オフ動作により、ト
ランスを介して出力端子間に所定の直流出力電圧
を得る絶縁形コンバータの出力電圧検出回路にお
いて、出力端子間に抵抗とフオトカプラのダイオ
ード側とシヤントレギユレータとの直列回路を接
続し、前記シヤントレギユレータのＲＥＦ端子に
直流出力電圧を分圧して抵抗を介して印加すると
ともに前記ＲＥＦ端子とカソード端子との間にコ
ンデンサを接続し、ＲＥＦ端子に印加された電圧
により前記フオトカプラのトランジスタ側の電流
を制御してスイツチングトランジスタのオン、オ
フを制御して直流出力電圧を一定にすることを特
徴とする絶縁形コンバータの出力電圧検出回路。 In the output voltage detection circuit of an isolated converter, a DC input voltage applied between the input terminals is turned on and off to obtain a specified DC output voltage between the output terminals via a transformer. A series circuit of a resistor, the diode side of the photocoupler, and a shunt regulator is connected, and a divided DC output voltage is applied to the REF terminal of the shunt regulator via the resistor, and the voltage is applied between the REF terminal and the cathode terminal. A capacitor is connected between the photocoupler and the photocoupler, and the current on the transistor side of the photocoupler is controlled by the voltage applied to the REF terminal, thereby controlling the on/off state of the switching transistor to keep the DC output voltage constant. Output voltage detection circuit for isolated converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7115786U JPS62185490U (en) | 1986-05-12 | 1986-05-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7115786U JPS62185490U (en) | 1986-05-12 | 1986-05-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62185490U true JPS62185490U (en) | 1987-11-25 |
Family
ID=30913463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7115786U Pending JPS62185490U (en) | 1986-05-12 | 1986-05-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62185490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287932A (en) * | 1988-09-21 | 1990-03-28 | Nec Corp | Power circuit |
| JPH02263217A (en) * | 1989-04-03 | 1990-10-26 | Eagle Ind Co Ltd | Load increasing circuit for voltage variable shunt regulator ic |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626853A (en) * | 1979-08-13 | 1981-03-16 | Sumitomo Chem Co Ltd | N-benzyl-haloacetamide derivative, its preparation, and herbicide comprising the same as active constituent |
| JPS56152018A (en) * | 1980-04-25 | 1981-11-25 | Furuno Electric Co Ltd | Constant-voltage power source circuit |
-
1986
- 1986-05-12 JP JP7115786U patent/JPS62185490U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626853A (en) * | 1979-08-13 | 1981-03-16 | Sumitomo Chem Co Ltd | N-benzyl-haloacetamide derivative, its preparation, and herbicide comprising the same as active constituent |
| JPS56152018A (en) * | 1980-04-25 | 1981-11-25 | Furuno Electric Co Ltd | Constant-voltage power source circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0287932A (en) * | 1988-09-21 | 1990-03-28 | Nec Corp | Power circuit |
| JPH02263217A (en) * | 1989-04-03 | 1990-10-26 | Eagle Ind Co Ltd | Load increasing circuit for voltage variable shunt regulator ic |