JPH0214293U - - Google Patents
Info
- Publication number
- JPH0214293U JPH0214293U JP10269388U JP10269388U JPH0214293U JP H0214293 U JPH0214293 U JP H0214293U JP 10269388 U JP10269388 U JP 10269388U JP 10269388 U JP10269388 U JP 10269388U JP H0214293 U JPH0214293 U JP H0214293U
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage
- switching element
- rectifying
- smoothing
- 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 3
- 238000006243 chemical reaction Methods 0.000 claims 4
- 238000009499 grossing Methods 0.000 claims 4
- 238000004804 winding Methods 0.000 claims 4
- 230000001939 inductive effect Effects 0.000 claims 2
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 6
- 230000005856 abnormality Effects 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例に係る多出力電源装
置の回路図、第２図は他の実施例に係る多出力電
源装置の回路図、第３図は従来例に係る回路図、
第４図は制御部２の詳細図、第５図は制御部３の
詳細図、第６図は本考案の一実施例に係る異常検
出回路図である。
２，３……制御部、４……異常検出回路、Ｄ６
……ツエナーダイオード。
FIG. 1 is a circuit diagram of a multi-output power supply device according to an embodiment of the present invention, FIG. 2 is a circuit diagram of a multi-output power supply device according to another embodiment, and FIG. 3 is a circuit diagram of a conventional example.
4 is a detailed diagram of the control section 2, FIG. 5 is a detailed diagram of the control section 3, and FIG. 6 is a diagram of an abnormality detection circuit according to an embodiment of the present invention. 2, 3...control unit, 4...abnormality detection circuit, D6
...Zener diode.
Claims (1)
を変換用トランスの１次巻線とスイツチング素子
の直列回路に印加し、上記スイツチング素子をオ
ン、オフして上記変換用トランスの２次巻線に電
圧を誘起させ、この誘起電圧を整流平滑すること
により、第１の直流出力を得ると共に、この第１
の直流出力を降圧型安定化回路へ入力し、第１の
直流出力とは異なる第２の直流出力も得る多出力
電源装置において、第２の直流出力の出力端子間
に第１の直流出力電圧よりも低く、第２の直流出
力電圧より高い定格電圧値を持つ定電圧素子を設
けたことを特徴とする多出力電源装置。 (2) 交流入力電圧を整流平滑して得た直流電圧
を変換用トランスの１次巻線とスイツチング素子
の直列回路に印加し、上記スイツチング素子をオ
ン、オフして上記変換用トランスの２次巻線に電
圧を誘起させ、この誘起電圧を整流平滑すること
により、第１の直流出力を得ると共に、この第１
の直流出力を降圧型安定化回路へ入力し、第１の
直流出力とは異なる第２の直流出力も得る多出力
電源装置において、第２の直流出力電圧の検出結
果により、第１の直流出力を制御するために、第
２の直流出力電圧値が所定値以上となつたとき、
上記スイツチング素子のオン・オフデユーテイを
制御する手段を設けたことを特徴とする多出力電
源装置。[Claims for Utility Model Registration] (1) A DC voltage obtained by rectifying and smoothing an AC input voltage is applied to a series circuit of the primary winding of a conversion transformer and a switching element, and the switching element is turned on and off. By inducing a voltage in the secondary winding of the conversion transformer and rectifying and smoothing this induced voltage, a first DC output is obtained, and this first
In a multi-output power supply device that inputs a DC output to a step-down stabilizing circuit and also obtains a second DC output different from the first DC output, a first DC output voltage is applied between the output terminals of the second DC output. A multi-output power supply device comprising a constant voltage element having a rated voltage value lower than the second DC output voltage and higher than the second DC output voltage. (2) The DC voltage obtained by rectifying and smoothing the AC input voltage is applied to the series circuit of the primary winding of the conversion transformer and the switching element, and the switching element is turned on and off to convert the secondary voltage of the conversion transformer. By inducing a voltage in the winding and rectifying and smoothing this induced voltage, a first DC output is obtained, and this first
In a multi-output power supply device that inputs a DC output to a step-down stabilizing circuit and also obtains a second DC output different from the first DC output, the detection result of the second DC output voltage determines whether the first DC output In order to control, when the second DC output voltage value exceeds a predetermined value,
A multi-output power supply device comprising means for controlling on/off duty of the switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10269388U JPH0214293U (en) | 1988-03-23 | 1988-08-04 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3707288 | 1988-03-23 | ||
| JP3707388 | 1988-03-23 | ||
| JP10269388U JPH0214293U (en) | 1988-03-23 | 1988-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214293U true JPH0214293U (en) | 1990-01-29 |
Family
ID=31721129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10269388U Pending JPH0214293U (en) | 1988-03-23 | 1988-08-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214293U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116008Y1 (en) * | 1970-05-07 | 1976-04-27 | ||
| JPS5962287U (en) * | 1982-10-19 | 1984-04-24 | 松下電器産業株式会社 | vane pump |
| JPS5999187U (en) * | 1982-12-23 | 1984-07-04 | マツダ株式会社 | vane pump |
| JP2002262544A (en) * | 2001-03-05 | 2002-09-13 | Fujitsu Ltd | Overvoltage protection device for power supply system, AC / DC converter and DC / DC converter constituting power supply system |
| JP2010057327A (en) * | 2008-08-29 | 2010-03-11 | Brother Ind Ltd | Power supply device and image forming device with the same |
-
1988
- 1988-08-04 JP JP10269388U patent/JPH0214293U/ja active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116008Y1 (en) * | 1970-05-07 | 1976-04-27 | ||
| JPS5962287U (en) * | 1982-10-19 | 1984-04-24 | 松下電器産業株式会社 | vane pump |
| JPS5999187U (en) * | 1982-12-23 | 1984-07-04 | マツダ株式会社 | vane pump |
| JP2002262544A (en) * | 2001-03-05 | 2002-09-13 | Fujitsu Ltd | Overvoltage protection device for power supply system, AC / DC converter and DC / DC converter constituting power supply system |
| JP4651832B2 (en) * | 2001-03-05 | 2011-03-16 | 富士通セミコンダクター株式会社 | Overvoltage protection device for power system |
| JP2010057327A (en) * | 2008-08-29 | 2010-03-11 | Brother Ind Ltd | Power supply device and image forming device with the same |
| JP4548532B2 (en) * | 2008-08-29 | 2010-09-22 | ブラザー工業株式会社 | Power supply device and image forming apparatus provided with the device |