JPH02118486U - - Google Patents
Info
- Publication number
- JPH02118486U JPH02118486U JP2490989U JP2490989U JPH02118486U JP H02118486 U JPH02118486 U JP H02118486U JP 2490989 U JP2490989 U JP 2490989U JP 2490989 U JP2490989 U JP 2490989U JP H02118486 U JPH02118486 U JP H02118486U
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- circuit
- pulse voltage
- voltage
- control 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.)
- Pending
Links
- 238000004804 winding Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は従来の電源制御回路のブロツク図である。
１，１′……スイツチング回路、２，２′……
トランス、３，３′……出力整流回路、４，４′
……ＰＷＭ制御回路、５，５′……整流回路、６
，６′……二次側パルス発生回路、７，７′……
帰還トランス、８……駆動用巻線、８′……駆動
回路。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a block diagram of a conventional power supply control circuit. 1, 1'... Switching circuit, 2, 2'...
Transformer, 3, 3'...Output rectifier circuit, 4, 4'
...PWM control circuit, 5, 5'... Rectifier circuit, 6
, 6'...Secondary side pulse generation circuit, 7, 7'...
Feedback transformer, 8...drive winding, 8'...drive circuit.
Claims (1)
パルス電圧を出力するスイツチング回路と、前記
第１のパルス電圧を入力して電圧変換する変圧器
の２次巻線に駆動巻線を有する主トランスと、前
記主トランスの出力を整流した直流出力電圧を前
記駆動巻線から出力されるパルス電圧で駆動し、
第２のパルス電圧を発生する２次側パルス電圧発
生回路と、前記スイツチング回路のスイツチング
すべき周波数を有するパルス信号を発生し、かつ
、このパルス信号の幅を変化させる制御端子を有
するパルス幅変調制御回路とを備え、前記第２の
パルス電圧を整流して前記パルス幅変調制御回路
の制御端子に帰還することを特徴とする電源制御
回路。 a switching circuit that outputs a first pulse voltage by switching a DC input; a main transformer having a drive winding in a secondary winding of a transformer that inputs the first pulse voltage and converts the voltage; Driving a DC output voltage obtained by rectifying the output of the main transformer with a pulse voltage output from the drive winding,
A pulse width modulation circuit having a secondary side pulse voltage generation circuit that generates a second pulse voltage, and a control terminal that generates a pulse signal having a frequency to be switched by the switching circuit and changes the width of this pulse signal. A power supply control circuit comprising a control circuit, the power supply control circuit rectifying the second pulse voltage and feeding it back to a control terminal of the pulse width modulation control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2490989U JPH02118486U (en) | 1989-03-03 | 1989-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2490989U JPH02118486U (en) | 1989-03-03 | 1989-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02118486U true JPH02118486U (en) | 1990-09-21 |
Family
ID=31245170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2490989U Pending JPH02118486U (en) | 1989-03-03 | 1989-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02118486U (en) |
-
1989
- 1989-03-03 JP JP2490989U patent/JPH02118486U/ja active Pending