JPH0318684U - - Google Patents
Info
- Publication number
- JPH0318684U JPH0318684U JP5287789U JP5287789U JPH0318684U JP H0318684 U JPH0318684 U JP H0318684U JP 5287789 U JP5287789 U JP 5287789U JP 5287789 U JP5287789 U JP 5287789U JP H0318684 U JPH0318684 U JP H0318684U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- starting
- transformer
- power
- starting 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 3
- 238000010586 diagram Methods 0.000 description 4
- 238000009499 grossing Methods 0.000 description 1
Description
第１図は本考案の一実施例を示すブロツク図、
第２図は第１図の動作を説明するタイミングチヤ
ート、第３図は本考案の他の実施例を示すブロツ
ク図、第４図は第３図の具体例を示す回路図、第
５図は従来の装置の一例を示すブロツク図である
。
１……トランス、２……１次巻線、３，４……
２時巻線、５……スイツチング素子、６……１次
側制御回路、７，８……整流平滑回路、９，１１
……ダイオード、１２……起動回路、１３……定
電圧回路、１４……タイマ回路、１５……スイツ
チ回路、１６……交流電源、１７……整流分圧回
路。
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is a timing chart explaining the operation of FIG. 1, FIG. 3 is a block diagram showing another embodiment of the present invention, FIG. 4 is a circuit diagram showing a specific example of FIG. 3, and FIG. FIG. 1 is a block diagram showing an example of a conventional device. 1...Transformer, 2...Primary winding, 3, 4...
2 o'clock winding, 5... Switching element, 6... Primary side control circuit, 7, 8... Rectifying and smoothing circuit, 9, 11
... Diode, 12 ... Starting circuit, 13 ... Constant voltage circuit, 14 ... Timer circuit, 15 ... Switch circuit, 16 ... AC power supply, 17 ... Rectifier voltage divider circuit.
Claims (1)
ング素子のオン、オフを制御する回路と、前記ト
ランスの１次側に接続されて起動時に前記制御回
路に起動電流を供給する起動回路を有するスイツ
チング電源装置において、 前記起動回路に電源投入後の一定時間のみ作動
するように制御するタイマを設けたことを特徴と
するスイツチング電源装置。[Claims for Utility Model Registration] A circuit for controlling on/off of a switching element connected in series to the primary winding of a transformer, and a circuit connected to the primary side of the transformer to supply a starting current to the control circuit at startup. What is claimed is: 1. A switching power supply device having a starting circuit that supplies power, characterized in that the starting circuit is provided with a timer that controls the starting circuit to operate only for a certain period of time after power is turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5287789U JPH0318684U (en) | 1989-03-30 | 1989-05-08 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3714589 | 1989-03-30 | ||
| JP5287789U JPH0318684U (en) | 1989-03-30 | 1989-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318684U true JPH0318684U (en) | 1991-02-25 |
Family
ID=31717792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5287789U Pending JPH0318684U (en) | 1989-03-30 | 1989-05-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318684U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024036A (en) * | 2001-07-18 | 2003-01-28 | Ikeda Denki Seisakusho:Kk | Smoking-prohibiting tool |
| JP2006054955A (en) * | 2004-08-11 | 2006-02-23 | Rohm Co Ltd | Power supply device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529234A (en) * | 1978-08-17 | 1980-03-01 | Matsushita Electric Ind Co Ltd | Power supply device |
| JPS5953690B2 (en) * | 1980-01-29 | 1984-12-26 | 三菱電機株式会社 | Tap switching device under load |
-
1989
- 1989-05-08 JP JP5287789U patent/JPH0318684U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5529234A (en) * | 1978-08-17 | 1980-03-01 | Matsushita Electric Ind Co Ltd | Power supply device |
| JPS5953690B2 (en) * | 1980-01-29 | 1984-12-26 | 三菱電機株式会社 | Tap switching device under load |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024036A (en) * | 2001-07-18 | 2003-01-28 | Ikeda Denki Seisakusho:Kk | Smoking-prohibiting tool |
| JP2006054955A (en) * | 2004-08-11 | 2006-02-23 | Rohm Co Ltd | Power supply device |
| US7723971B2 (en) | 2004-08-11 | 2010-05-25 | Rohm Co., Ltd. | Power supply |
| JP4498851B2 (en) * | 2004-08-11 | 2010-07-07 | ローム株式会社 | Power supply |