JPH0210784U - - Google Patents
Info
- Publication number
- JPH0210784U JPH0210784U JP8714088U JP8714088U JPH0210784U JP H0210784 U JPH0210784 U JP H0210784U JP 8714088 U JP8714088 U JP 8714088U JP 8714088 U JP8714088 U JP 8714088U JP H0210784 U JPH0210784 U JP H0210784U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- switching power
- detection circuit
- circuit
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
Landscapes
- Dc-Dc Converters (AREA)
Description
第1図は本考案によるスイツチング電源回路の
一実施例を示す電気回路図、第2図は動作波形図
、第3図は従来回路図である。
1,2…入力端子、5,6…分圧抵抗、7…基
準電圧検出回路、8…比較器、9…起動回路、1
0…トランジスタ(主開閉器)、11…トランス
、12…1次巻線、13…シヤント抵抗、14…
3次巻線、15…ホトカプラ、16…ホトトラン
ジスタ、17…ホトダイオード、18…出力電圧
検出回路、19,20…出力端子、25…2次巻
線。
FIG. 1 is an electric circuit diagram showing an embodiment of the switching power supply circuit according to the present invention, FIG. 2 is an operating waveform diagram, and FIG. 3 is a conventional circuit diagram. 1, 2... Input terminal, 5, 6... Voltage dividing resistor, 7... Reference voltage detection circuit, 8... Comparator, 9... Starting circuit, 1
0...Transistor (main switch), 11...Transformer, 12...Primary winding, 13...Shunt resistor, 14...
Tertiary winding, 15... Photocoupler, 16... Phototransistor, 17... Photodiode, 18... Output voltage detection circuit, 19, 20... Output terminal, 25... Secondary winding.
Claims (1)
、シヤント抵抗により電圧に変換し、この電圧と
基準電圧とを比較器により比較し、この比較器の
出力により前記主開閉器をオン、オフして前記イ
ンバータ回路の導通時間を制御するようにしたス
イツチング電源において、前記基準電圧の検出回
路は、入力電源端子に分圧抵抗を介して結合して
なることを特徴とするスイツチング電源回路。 (2) 基準電圧検出回路は、分圧抵抗と直列にホ
トカプラを挿入し、このホトカプラに出力電圧検
出回路を結合してなる請求項(1)記載のスイツチ
ング電源回路。[Claims for Utility Model Registration] (1) The current flowing through the main switch of the inverter circuit is converted into voltage by a shunt resistor, this voltage is compared with a reference voltage by a comparator, and the output of this comparator is used to A switching power supply that controls the conduction time of the inverter circuit by turning on and off a main switch, characterized in that the reference voltage detection circuit is coupled to an input power supply terminal via a voltage dividing resistor. Switching power supply circuit. (2) The switching power supply circuit according to claim 1, wherein the reference voltage detection circuit includes a photocoupler inserted in series with the voltage dividing resistor, and an output voltage detection circuit coupled to the photocoupler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8714088U JPH0545112Y2 (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8714088U JPH0545112Y2 (en) | 1988-06-30 | 1988-06-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0210784U true JPH0210784U (en) | 1990-01-23 |
JPH0545112Y2 JPH0545112Y2 (en) | 1993-11-17 |
Family
ID=31311764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8714088U Expired - Lifetime JPH0545112Y2 (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0545112Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006314162A (en) * | 2005-05-09 | 2006-11-16 | Shindengen Electric Mfg Co Ltd | Synchronous rectifier type converter |
-
1988
- 1988-06-30 JP JP8714088U patent/JPH0545112Y2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006314162A (en) * | 2005-05-09 | 2006-11-16 | Shindengen Electric Mfg Co Ltd | Synchronous rectifier type converter |
JP4683997B2 (en) * | 2005-05-09 | 2011-05-18 | 新電元工業株式会社 | Synchronous rectifier converter |
Also Published As
Publication number | Publication date |
---|---|
JPH0545112Y2 (en) | 1993-11-17 |