JPH0260486U - - Google Patents
Info
- Publication number
- JPH0260486U JPH0260486U JP13985088U JP13985088U JPH0260486U JP H0260486 U JPH0260486 U JP H0260486U JP 13985088 U JP13985088 U JP 13985088U JP 13985088 U JP13985088 U JP 13985088U JP H0260486 U JPH0260486 U JP H0260486U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- input
- winding
- power
- transformer
- 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
- 238000004804 winding Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係る電源装置の電気回路図、
第２図は同じくその具体的な実施例における電気
回路図、第３図は同じく更に別の実施例における
電気回路図、第４図は従来の電源装置の電気回路
図である。
４……電源入力回路、４１……ダイオードブリ
ツジ回路、４２……コンデンサ回路、５……ＤＣ
−ＤＣコンバータ、５１……変圧器、５１１……
入力巻線、５１２……出力巻線、５１３……第３
の巻線、５２……スイツチ素子、５３……出力回
路、６……切換回路、６１……切換スイツチ、６
２……電圧識別回路、６３……スイツチ回路。
FIG. 1 is an electric circuit diagram of a power supply device according to the present invention,
FIG. 2 is an electric circuit diagram of a specific embodiment, FIG. 3 is an electric circuit diagram of still another embodiment, and FIG. 4 is an electric circuit diagram of a conventional power supply device. 4...Power input circuit, 41...Diode bridge circuit, 42...Capacitor circuit, 5...DC
-DC converter, 51...Transformer, 511...
Input winding, 512...Output winding, 513...Third
winding, 52...switch element, 53...output circuit, 6...switching circuit, 61...switching switch, 6
2... Voltage identification circuit, 63... Switch circuit.
Claims (1)
、切換回路とを含む電源装置であつて、 前記電源入力回路は、ダイオードブリツジ回路
と、コンデンサ回路とを含み、前記ダイオードブ
リツジ回路は、電圧値の異なる２種類の交流電源
が選択的に入力される入力端子に接続されており
、前記コンデンサ回路は、前記ダイオードブリツ
ジ回路の整流出力側に接続されており、 前記ＤＣ−ＤＣコンバータは、変圧器と、スイ
ツチング素子と、出力回路とを含み、 前記変圧器は、前記電源入力回路の整流平滑出
力が供給される入力巻線と、出力巻線と、第３の
巻線とを有しており、 前記スイツチング素子は、前記入力巻線に接続
されており、 前記出力回路は、前記出力巻線に接続されスイ
ツチング出力を直流に変換して出力する回路でな
り、 前記切換回路は、切換スイツチと、電圧識別回
路と、スイツチ回路とを含み、 前記切換スイツチは、前記変圧器の前記第３の
巻線に生じる電圧を駆動電源とし、前記電源入力
回路を、ブリツジ整流と倍電圧整流との間で切換
えるように、前記ダイオードブリツジ回路と前記
コンデンサ回路との間に接続されており、 前記電圧識別回路は、前記電源入力回路の入力
側に接続され、前記電源入力回路に前記２種類の
交流電源のいずれが入力されたかを識別する回路
でなり、 前記スイツチ回路は、前記電圧識別回路から識
別信号が与えられ、識別信号に応じて前記切換ス
イツチをオン、オフ駆動すること を特徴とする電源装置。 (2) 前記ＤＣ−ＤＣコンバータは、前記スイツ
チング素子のスイツチング動作を制御する制御回
路を含み、前記制御回路は、起動後に前記変圧器
に備えられた第４の巻線より与えられる電圧を電
源として動作することを特徴とする実用新案登録
請求の範囲第１項に記載の電源装置。 (3) 交流入力ラインに突入電流防止回路を有し
、前記突入電流防止回路は、前記変圧器の前記第
３の巻線に生じる電圧によつて動作させることと
特徴とする実用新案登録請求の範囲第１項または
第２項に記載の電源装置。 (4) 前記突入電流防止回路は、前記切換回路を
動作させた後に動作させることを特徴とする実用
新案登録請求の範囲第３項に記載の電源装置。[Claims for Utility Model Registration] (1) A power supply device including a power input circuit, a DC-DC converter, and a switching circuit, wherein the power input circuit includes a diode bridge circuit and a capacitor circuit. , the diode bridge circuit is connected to an input terminal into which two types of AC power supplies having different voltage values are selectively input, and the capacitor circuit is connected to a rectified output side of the diode bridge circuit. The DC-DC converter includes a transformer, a switching element, and an output circuit, and the transformer includes an input winding to which the rectified and smoothed output of the power input circuit is supplied, and an output winding. a third winding, the switching element is connected to the input winding, and the output circuit is a circuit that is connected to the output winding and converts the switching output into direct current and outputs it. The changeover circuit includes a changeover switch, a voltage identification circuit, and a switch circuit, and the changeover switch uses the voltage generated in the third winding of the transformer as a driving power source, and the changeover circuit uses the voltage generated in the third winding of the transformer as a driving power source, and is connected between the diode bridge circuit and the capacitor circuit so as to switch between bridge rectification and voltage doubler rectification, and the voltage discrimination circuit is connected to the input side of the power input circuit. , a circuit that identifies which of the two types of AC power is input to the power input circuit, and the switch circuit receives an identification signal from the voltage identification circuit and operates the changeover switch in accordance with the identification signal. A power supply device characterized by on/off operation. (2) The DC-DC converter includes a control circuit that controls the switching operation of the switching element, and the control circuit uses the voltage applied from the fourth winding provided in the transformer as a power source after startup. The power supply device according to claim 1, which operates as a utility model. (3) A utility model registration request characterized in that the AC input line has an inrush current prevention circuit, and the inrush current prevention circuit is operated by the voltage generated in the third winding of the transformer. The power supply device according to scope 1 or 2. (4) The power supply device according to claim 3, wherein the inrush current prevention circuit is operated after the switching circuit is operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139850U JP2533115Y2 (en) | 1988-10-25 | 1988-10-25 | Power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988139850U JP2533115Y2 (en) | 1988-10-25 | 1988-10-25 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0260486U true JPH0260486U (en) | 1990-05-02 |
| JP2533115Y2 JP2533115Y2 (en) | 1997-04-23 |
Family
ID=31403490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988139850U Expired - Lifetime JP2533115Y2 (en) | 1988-10-25 | 1988-10-25 | Power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533115Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172999A (en) * | 2006-12-13 | 2008-07-24 | Canon Inc | Switching power supply |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155989U (en) * | 1981-03-25 | 1982-09-30 |
-
1988
- 1988-10-25 JP JP1988139850U patent/JP2533115Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57155989U (en) * | 1981-03-25 | 1982-09-30 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008172999A (en) * | 2006-12-13 | 2008-07-24 | Canon Inc | Switching power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2533115Y2 (en) | 1997-04-23 |
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