JPH0454487U - - Google Patents
Info
- Publication number
- JPH0454487U JPH0454487U JP9720890U JP9720890U JPH0454487U JP H0454487 U JPH0454487 U JP H0454487U JP 9720890 U JP9720890 U JP 9720890U JP 9720890 U JP9720890 U JP 9720890U JP H0454487 U JPH0454487 U JP H0454487U
- Authority
- JP
- Japan
- Prior art keywords
- power
- voltage
- transformer
- circuit
- control
- 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
- 238000004804 winding Methods 0.000 claims 3
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案のスイツチング電源装置の回路
図、第２図は従来のスイツチング電源装置の回路
図である。
１……交流電源、２……整流器、２……コンデ
ンサ、４……トランス、５……スイツチング素子
、６……コントロールＩＣ、７……定電圧回路。
FIG. 1 is a circuit diagram of a switching power supply according to the present invention, and FIG. 2 is a circuit diagram of a conventional switching power supply. 1... AC power supply, 2... Rectifier, 2... Capacitor, 4... Transformer, 5... Switching element, 6... Control IC, 7... Constant voltage circuit.
Claims (1)
グ素子とが接続され、このスイツチング素子をス
イツチングさせて前記トランスの２次巻線から負
荷に給電するスイツチング電源装置において、前
記直流電源間にその電圧が一定値以上になつた時
に導通して前記スイツチング素子の制御回路に一
定電圧の制御電源を供給する回路を設け、かつ前
記トランスに設けた３次巻線から前記制御回路に
制御電源を供給するように構成するとともに、こ
の制御電源の電圧を安定化させる定電圧回路を設
けたことを特徴とするスイツチング電源装置。 In a switching power supply device in which a primary winding of a transformer and a switching element are connected between a DC power source, and the switching element is switched to supply power from the secondary winding of the transformer to a load, the voltage between the DC power sources is A circuit is provided that becomes conductive when the voltage exceeds a certain value to supply a constant voltage control power to the control circuit of the switching element, and the control power is supplied to the control circuit from a tertiary winding provided in the transformer. What is claimed is: 1. A switching power supply device comprising a constant voltage circuit for stabilizing the voltage of the control power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9720890U JPH0454487U (en) | 1990-09-13 | 1990-09-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9720890U JPH0454487U (en) | 1990-09-13 | 1990-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454487U true JPH0454487U (en) | 1992-05-11 |
Family
ID=31837378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9720890U Pending JPH0454487U (en) | 1990-09-13 | 1990-09-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454487U (en) |
-
1990
- 1990-09-13 JP JP9720890U patent/JPH0454487U/ja active Pending
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