JP4698567B2 - スイッチング電源 - Google Patents
スイッチング電源 Download PDFInfo
- Publication number
- JP4698567B2 JP4698567B2 JP2006340048A JP2006340048A JP4698567B2 JP 4698567 B2 JP4698567 B2 JP 4698567B2 JP 2006340048 A JP2006340048 A JP 2006340048A JP 2006340048 A JP2006340048 A JP 2006340048A JP 4698567 B2 JP4698567 B2 JP 4698567B2
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- Prior art keywords
- voltage
- power supply
- reference voltage
- transformer
- switching power
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- 238000001514 detection method Methods 0.000 claims description 15
- 230000007423 decrease Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Description
2 電源制御回路
3 シャントレギュレータ
6 ツェナーダイオード
11 FET
Claims (2)
- 変圧トランスの2次側に基準電圧を検出する電圧検知手段を設け、この電圧検出手段からの信号を1次側へフィードバックし、1次側の供給電力を制御して上記基準電圧を一定に制御する電源制御回路を有するとともに、この基準電圧が所定値を超えたことを過電圧検出回路で検出して、1次側に設けた過電力保護回路を作動させるスイッチング電源において、2次側に基準電圧とは異なる電圧を発生させる変圧手段を備えると共に、変圧手段の出力電圧が所定値を超えると間接的に上記過電圧検出回路を作動させて上記過電力保護回路を作動させることを特徴とするスイッチング電源。
- 上記電圧検知手段としてシャントレギュレータを用い、フォトカップラの発光ダイオードをこのシャントレギュレータに直列に接続して電源制御回路にフィードバックするように構成し、上記変圧手段で基準電圧から変圧した出力電圧が所定値を超えると、上記シャントレギュレータのリファレンス端子の電位を低下させることにより、電源制御回路に基準電圧が低いように見せかけ、基準電圧が所定値を超えるように1次側の供給電力を増加させることを特徴とする請求項1に記載のスイッチング電源。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006340048A JP4698567B2 (ja) | 2006-12-18 | 2006-12-18 | スイッチング電源 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006340048A JP4698567B2 (ja) | 2006-12-18 | 2006-12-18 | スイッチング電源 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008154373A JP2008154373A (ja) | 2008-07-03 |
JP4698567B2 true JP4698567B2 (ja) | 2011-06-08 |
Family
ID=39655984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006340048A Active JP4698567B2 (ja) | 2006-12-18 | 2006-12-18 | スイッチング電源 |
Country Status (1)
Country | Link |
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JP (1) | JP4698567B2 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111784U (ja) * | 1985-12-30 | 1987-07-16 | ||
JPH04200228A (ja) * | 1990-11-29 | 1992-07-21 | Matsushita Electric Ind Co Ltd | 電源回路 |
JPH05236744A (ja) * | 1992-02-19 | 1993-09-10 | Ricoh Co Ltd | 多出力スイッチング電源装置 |
JPH0759341A (ja) * | 1993-08-11 | 1995-03-03 | Nippon Densan Corp | スイッチング電源装置 |
JPH07322609A (ja) * | 1994-05-18 | 1995-12-08 | Ricoh Co Ltd | スイッチング電源装置 |
JP2000354368A (ja) * | 1999-06-10 | 2000-12-19 | Nichicon Corp | スイッチング電源装置 |
-
2006
- 2006-12-18 JP JP2006340048A patent/JP4698567B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62111784U (ja) * | 1985-12-30 | 1987-07-16 | ||
JPH04200228A (ja) * | 1990-11-29 | 1992-07-21 | Matsushita Electric Ind Co Ltd | 電源回路 |
JPH05236744A (ja) * | 1992-02-19 | 1993-09-10 | Ricoh Co Ltd | 多出力スイッチング電源装置 |
JPH0759341A (ja) * | 1993-08-11 | 1995-03-03 | Nippon Densan Corp | スイッチング電源装置 |
JPH07322609A (ja) * | 1994-05-18 | 1995-12-08 | Ricoh Co Ltd | スイッチング電源装置 |
JP2000354368A (ja) * | 1999-06-10 | 2000-12-19 | Nichicon Corp | スイッチング電源装置 |
Also Published As
Publication number | Publication date |
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JP2008154373A (ja) | 2008-07-03 |
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