JPH0421192U - - Google Patents
Info
- Publication number
- JPH0421192U JPH0421192U JP6199190U JP6199190U JPH0421192U JP H0421192 U JPH0421192 U JP H0421192U JP 6199190 U JP6199190 U JP 6199190U JP 6199190 U JP6199190 U JP 6199190U JP H0421192 U JPH0421192 U JP H0421192U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- switching element
- capacitor
- full
- wave rectifier
- 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
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は従来の高力率形スイツチング電源の基
本回路図、第３図は本考案の一実施例を示す回路
接続図、第２図のＡ，Ｂは従来の高力率スイツチ
ング電源の動作を説明するための動作波形図、第
４図のＡ，Ｂ，Ｃ，Ｄ，Ｅ，Ｆ，と第５図Ａ，Ｂ
，Ｃは本考案の実施例の動作を説明するための動
作波形図。
１……商用交流電源、２……全波整流器、３…
…高周波成分除去用コンデンサ、４……リアクト
ル、５……電圧検出回路スイツチング素子６、７
……整流用ダイオード、８……平滑用コンデンサ
、９……電気的負荷、１０……駆動回路、１１…
…スナバ用抵抗、１２……スナバ用コンデンサ、
１３……パルス発生器、１４，２２……誤差増幅
器、１５……基準電圧源、１６……インバータ回
路、１７……アンド回路、１８……放電用コンデ
ンサ、１９……充電回路、２０……鋸歯状電圧発
生用コンデンサ、２１……コンパレータ、２３，
２４……信号合成用抵抗、２５，２６……分圧抵
抗、２７……充電用ダイオード、２８……平均値
電圧発生用コンデンサ、２９，３０……分圧用抵
抗。
Fig. 1 is a basic circuit diagram of a conventional high power factor switching power supply, Fig. 3 is a circuit connection diagram showing an embodiment of the present invention, and A and B in Fig. 2 are operations of a conventional high power factor switching power supply. Operation waveform diagrams A, B, C, D, E, F in Fig. 4 and A, B in Fig. 5 to explain the
, C are operation waveform diagrams for explaining the operation of the embodiment of the present invention. 1...Commercial AC power supply, 2...Full wave rectifier, 3...
...High frequency component removal capacitor, 4...Reactor, 5...Voltage detection circuit switching element 6, 7
... Rectifier diode, 8 ... Smoothing capacitor, 9 ... Electrical load, 10 ... Drive circuit, 11 ...
... Snubber resistor, 12... Snubber capacitor,
13... Pulse generator, 14, 22... Error amplifier, 15... Reference voltage source, 16... Inverter circuit, 17... AND circuit, 18... Discharging capacitor, 19... Charging circuit, 20... Sawtooth voltage generation capacitor, 21... Comparator, 23,
24... Resistor for signal synthesis, 25, 26... Resistor for voltage division, 27... Diode for charging, 28... Capacitor for generating average voltage, 29, 30... Resistor for voltage division.
Claims (1)
全波整流器の入力、または、出力に接続された第
１のコンデンサを備え、前記全波整流器にリアク
トルとオン・オフ動作を行うスイツチング素子を
直列に接続し、前記スイツチング素子の両端にダ
イオードと第２のコンデンサを直列に接続し、前
記第２のコンデンサの両端から直流電圧を出力し
、負荷に供給するように構成されたスイツチング
電源において、前記リアクトルの両端電圧を検出
する電圧検出回路を備え、前記電圧検出回路の出
力信号から前記スイツチング素子のオフ時間幅を
制御する第１の制御回路と、前記直流出力電圧が
所定電圧になるように、前記スイツチング素子の
のオン時間幅を制御する第２の制御回路と、前記
全波整流回路の出力電圧を検出し商用交流電源の
電圧が零に近くなる位相の時に、前記スイツチン
グ素子のオン時間幅が広がるように制御する第３
の制御回路を備えたことを特徴とするスイツチン
グ電源。 A full-wave rectifier that receives a commercial AC power source as an input, and a first capacitor connected to the input or output of the full-wave rectifier, and a reactor and a switching element that performs on/off operation are connected in series to the full-wave rectifier. , a diode and a second capacitor are connected in series to both ends of the switching element, and a DC voltage is output from both ends of the second capacitor and supplied to the load. a first control circuit comprising a voltage detection circuit for detecting a voltage across the reactor, and controlling an off time width of the switching element from an output signal of the voltage detection circuit; a second control circuit that controls the on-time width of the switching element; and a second control circuit that detects the output voltage of the full-wave rectifier circuit and controls the on-time width of the switching element when the voltage of the commercial AC power source is in a phase close to zero. 3rd control to spread
A switching power supply characterized by being equipped with a control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061991U JP2515403Y2 (en) | 1990-06-12 | 1990-06-12 | Switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990061991U JP2515403Y2 (en) | 1990-06-12 | 1990-06-12 | Switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0421192U true JPH0421192U (en) | 1992-02-21 |
| JP2515403Y2 JP2515403Y2 (en) | 1996-10-30 |
Family
ID=31590737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990061991U Expired - Fee Related JP2515403Y2 (en) | 1990-06-12 | 1990-06-12 | Switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2515403Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016052207A (en) * | 2014-09-01 | 2016-04-11 | 富士電機株式会社 | High efficiency power factor correction circuit and switching power supply |
| JP2017017767A (en) * | 2015-06-26 | 2017-01-19 | 富士電機株式会社 | High efficiency power factor improvement circuit and switching power supply device |
| WO2025062924A1 (en) * | 2023-09-19 | 2025-03-27 | ソニーグループ株式会社 | Power supply circuit and electric apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148070A (en) * | 1987-12-04 | 1989-06-09 | Fuji Elelctrochem Co Ltd | Power unit |
| JPH0284069A (en) * | 1988-09-19 | 1990-03-26 | Origin Electric Co Ltd | Dc power device |
-
1990
- 1990-06-12 JP JP1990061991U patent/JP2515403Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01148070A (en) * | 1987-12-04 | 1989-06-09 | Fuji Elelctrochem Co Ltd | Power unit |
| JPH0284069A (en) * | 1988-09-19 | 1990-03-26 | Origin Electric Co Ltd | Dc power device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016052207A (en) * | 2014-09-01 | 2016-04-11 | 富士電機株式会社 | High efficiency power factor correction circuit and switching power supply |
| JP2017017767A (en) * | 2015-06-26 | 2017-01-19 | 富士電機株式会社 | High efficiency power factor improvement circuit and switching power supply device |
| WO2025062924A1 (en) * | 2023-09-19 | 2025-03-27 | ソニーグループ株式会社 | Power supply circuit and electric apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2515403Y2 (en) | 1996-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |