CN108649816A - A kind of current rectifying and wave filtering circuit - Google Patents
A kind of current rectifying and wave filtering circuit Download PDFInfo
- Publication number
- CN108649816A CN108649816A CN201810614575.0A CN201810614575A CN108649816A CN 108649816 A CN108649816 A CN 108649816A CN 201810614575 A CN201810614575 A CN 201810614575A CN 108649816 A CN108649816 A CN 108649816A
- Authority
- CN
- China
- Prior art keywords
- capacitance
- wave filtering
- current rectifying
- common mode
- filtering 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/123—Suppression of common mode voltage or current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a kind of current rectifying and wave filtering circuits, including fuse F1, resistance R1~R3, capacitance C1~C5, common mode inductance L1, rectifier bridge D1.The circuit structure of the current rectifying and wave filtering circuit of the present invention is simple, while can reduce the loss of power supply, to improve the power conversion efficiency of power supply entirety.
Description
Technical field
The invention belongs to power technique fields, a kind of particularly current rectifying and wave filtering circuit.
Background technology
In Switching Power Supply design, current rectifying and wave filtering circuit carries out rectifying and wave-filtering to the electric main of input, as switch electricity
The quality of the first part in source, circuit design directly affects the output operating mode and property indices of power supply.Switching Power Supply
It is primarily present Conduction Interference and near-field thermal radiation interferes, and the di/ that these interference sources are mainly generated by power switch tube switch motion
Dt and du/dt cause, simultaneously because input current is interrupted in rectification circuit, not only cause the drop significantly of input power factor
It is low, but also increase a large amount of higher hamonic wave, the part so electromagnetic interface filter is very important in Switching Power Supply.EMI is filtered
Device has and has apparent inhibiting effect to differential mode and common mode noise signal, so differential mode filter and common mode filtering can generally be added
Device.As how a kind of simple circuit structure realizes that above-mentioned function becomes the important topic of this field.
Therefore, for drawbacks described above present in currently available technology, it is really necessary to be studied, to provide a kind of side
Case solves defect existing in the prior art.
Invention content
The present invention provides a kind of simple current rectifying and wave filtering circuit of circuit structure, to more in view of the deficiencies in the prior art
Meet the application requirement of Switching Power Supply well.
To achieve the above object, technical scheme is as follows：
A kind of current rectifying and wave filtering circuit, including fuse F1, resistance R1~R3, capacitance C1~C5, common mode inductance L1, rectifier bridge
D1；One end of fuse F1 is connect with input alternating current one end, the other end of fuse and one end of first resistor R1, the first capacitance
The 1st pin connection of one end of C1, one end of second resistance R2, common mode inductance L1, the other end and alternating current of first resistor R1 are defeated
The 3rd pin connection of the other end, the electric other end of a capacitance C1, the other end of second resistance R2, common mode inductance L1 that enter, common mode
The 2nd pin of inductance L1 is connect with one end of the second capacitance C2, one end of the 4th capacitance C4, the 2nd pin of rectifier bridge D1, and second
The other end of capacitance C2 connect and is grounded with one end of third capacitance C3, and the of the other end of third capacitance C3 and common mode inductance L1
The 4th pin connection of 4 pins, the other end of the 4th capacitance C4, rectifier bridge D1, the 3rd pin and the 3rd resistor R3 of rectifier bridge D1
One end, the 5th capacitance C5 anode connection, the 1st pin of rectifier bridge D1 and the other end of 3rd resistor R3, the 5th capacitance C5
Cathode connection and ground terminal；It is 20D471K that the first resistor R1, which is varistor type selecting, and the first capacitance C1 is X capacitances, second
Capacitance C2 and third capacitance C3 is Y capacitance, and the 5th capacitance C5 is electrolytic capacitor.
Resistance R1 is the varistor of model 20D-471K as a preferred technical solution,.
The common mode inductance L1 is isolating transformer as a preferred technical solution,.
Capacitance C4 and capacitance C1 is safety X-type capacitance as a preferred technical solution,.
Capacitance C2 and capacitance C3 is safety Y type capacitances as a preferred technical solution,.
The device have the advantages that：
The circuit structure of the current rectifying and wave filtering circuit of the present invention is simple, while can reduce the loss of power supply, to improve
The power conversion efficiency of power supply entirety.
Description of the drawings
Fig. 1 is the circuit diagram of current rectifying and wave filtering circuit of the present invention；
Following specific embodiment will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
Specific implementation mode
Technical solution provided by the invention is described further below with reference to attached drawing.
Referring to Fig. 1, it show the circuit diagram of current rectifying and wave filtering circuit, including fuse F1, resistance R1~R3, capacitance C1
~C5, common mode inductance L1, rectifier bridge D1；One end of fuse F1 is connect with input alternating current one end, the other end of fuse and the
The 1st pin connection of one end of one resistance R1, one end of the first capacitance C1, one end of second resistance R2, common mode inductance L1, first
The other end, the electric other end of a capacitance C1, the other end of second resistance R2, the common mode electricity of the other end of resistance R1 and alternating current input
Feel the 3rd pin connection of L1, the 2nd pin of common mode inductance L1 and one end of the second capacitance C2, one end of the 4th capacitance C4, rectification
The 2nd pin of bridge D1 connects, and the other end of the second capacitance C2 connect and is grounded with one end of third capacitance C3, third capacitance C3's
The other end is connect with the 4th pin of the 4th pin of common mode inductance L1, the other end of the 4th capacitance C4, rectifier bridge D1, rectifier bridge D1
The 3rd pin and one end of 3rd resistor R3, the 5th capacitance C5 anode connect, the 1st pin and 3rd resistor R3 of rectifier bridge D1
The other end, the 5th capacitance C5 cathode connection and ground terminal；It is 20D471K that the first resistor R1, which is varistor type selecting,
First capacitance C1 is X capacitances, and the second capacitance C2 and third capacitance C3 is Y capacitance, and the 5th capacitance C5 is electrolytic capacitor.
The circuit design of Fig. 1 is mainly the improve and perfect to module rectification principle so that improved module can have
Effect completes rectified action and EMI filtering, and stable voltage support is provided for the power dress mold changing block and accessory power supply of rear class.It is whole
It includes the devices such as varistor, rectifier bridge, filter capacitor and electromagnetic interface filter to flow in filter circuit, wherein R1 is model
The varistor of 20D-471K.Varistor is that a kind of C-V characteristic is nonlinear resistance, when the similar burst such as lightning stroke occurs
When situation, filter module utilizes its nonlinear characteristic by unexpected raised voltage clamping to a relatively-stationary value, thus
It plays a protective role to the module of rear class.Common mode inductance L1, which is isolating transformer, can be effectively isolated input and successive load
Interference.C4, C1 are safety X-type capacitance, and C2, C3 are safety Y type capacitances.Safety X capacitance connections, can be at the both ends of input circuit
The effectively DM EMI in filtered input signal, and safety Y capacitance is then connected between phase line and ground wire, to the common mode of circuit
Inhibiting effect is played in interference, and safety resistance can greatly improve the EMI abilities of current rectifying and wave filtering circuit.EMI module rears are connected to
Rectifier bridge and electrolytic capacitor make exchange input electricity and are converted to steady dc voltage by the rectifying and wave-filtering processing of full-bridge rectification.
The explanation of above example is only intended to facilitate the understanding of the method and its core concept of the invention.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (5)
1. a kind of current rectifying and wave filtering circuit, which is characterized in that including fuse F1, resistance R1~R3, capacitance C1~C5, common mode inductance
L1, rectifier bridge D1；One end of fuse F1 is connect with input alternating current one end, the other end of fuse and the one of first resistor R1
The 1st pin connection at end, one end of the first capacitance C1, one end of second resistance R2, common mode inductance L1, first resistor R1's is another
The other end inputted with alternating current, the electricity other end of one capacitance C1, the other end of second resistance R2, common mode inductance L1 is held the 3rd to draw
Foot connects, and the 2nd pin of common mode inductance L1 draws with one end, one end of the 4th capacitance C4, the 2nd of rectifier bridge D1 of the second capacitance C2
Foot connects, and the other end of the second capacitance C2 connect and is grounded with one end of third capacitance C3, and the other end of third capacitance C3 is together
The 4th pin connection of the 4th pin, the other end of the 4th capacitance C4, rectifier bridge D1 of mould inductance L1, the 3rd pin of rectifier bridge D1
Connect with the anode of one end of 3rd resistor R3, the 5th capacitance C5, the 1st pin of rectifier bridge D1 and the other end of 3rd resistor R3,
The cathode of 5th capacitance C5 connects and ground terminal；The first resistor R1 is that varistor type selecting is 20D471K, the first capacitance C1
For X capacitances, the second capacitance C2 and third capacitance C3 is Y capacitance, and the 5th capacitance C5 is electrolytic capacitor.
2. current rectifying and wave filtering circuit according to claim 1, which is characterized in that resistance R1 is the pressure-sensitive of model 20D-471K
Resistance.
3. current rectifying and wave filtering circuit according to claim 1 or 2, which is characterized in that the common mode inductance L1 is isolation transformation
Device.
4. current rectifying and wave filtering circuit according to claim 1 or 2, which is characterized in that capacitance C4 and capacitance C1 is safety X-type electricity
Hold.
5. current rectifying and wave filtering circuit according to claim 1 or 2, which is characterized in that capacitance C2 and capacitance C3 is safety Y type electricity
Hold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614575.0A CN108649816A (en) | 2018-06-14 | 2018-06-14 | A kind of current rectifying and wave filtering circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810614575.0A CN108649816A (en) | 2018-06-14 | 2018-06-14 | A kind of current rectifying and wave filtering circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108649816A true CN108649816A (en) | 2018-10-12 |
Family
ID=63752589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810614575.0A Withdrawn CN108649816A (en) | 2018-06-14 | 2018-06-14 | A kind of current rectifying and wave filtering circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108649816A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448600A (en) * | 2019-09-03 | 2021-03-05 | 西安航兴海拓电子科技有限公司 | Integrated power supply |
| CN117674612A (en) * | 2024-02-01 | 2024-03-08 | 深圳市力生美半导体股份有限公司 | Power supply circuit and switching power supply |
| CN117674612B (en) * | 2024-02-01 | 2024-05-31 | 深圳市力生美半导体股份有限公司 | Power supply circuit and switching power supply |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318651Y (en) * | 2008-10-15 | 2009-09-30 | 刘东芳 | Led street lamp circuit |
| CN202077249U (en) * | 2011-03-18 | 2011-12-14 | 杭州电子科技大学 | Electromagnetic interference preventing and protecting device |
| CN107911035A (en) * | 2017-12-12 | 2018-04-13 | 成都互聚科技有限公司 | A kind of power-supply system using more piece π types RC filtering outputs |
| CN107968553A (en) * | 2017-12-12 | 2018-04-27 | 成都互聚科技有限公司 | A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference |
| CN208522661U (en) * | 2018-06-14 | 2019-02-19 | 徐杰 | A kind of current rectifying and wave filtering circuit |
-
2018
- 2018-06-14 CN CN201810614575.0A patent/CN108649816A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201318651Y (en) * | 2008-10-15 | 2009-09-30 | 刘东芳 | Led street lamp circuit |
| CN202077249U (en) * | 2011-03-18 | 2011-12-14 | 杭州电子科技大学 | Electromagnetic interference preventing and protecting device |
| CN107911035A (en) * | 2017-12-12 | 2018-04-13 | 成都互聚科技有限公司 | A kind of power-supply system using more piece π types RC filtering outputs |
| CN107968553A (en) * | 2017-12-12 | 2018-04-27 | 成都互聚科技有限公司 | A kind of adjustable voltage-stabilizing circuit system with anti-lightning strike anti-electromagnetic interference |
| CN208522661U (en) * | 2018-06-14 | 2019-02-19 | 徐杰 | A kind of current rectifying and wave filtering circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448600A (en) * | 2019-09-03 | 2021-03-05 | 西安航兴海拓电子科技有限公司 | Integrated power supply |
| CN117674612A (en) * | 2024-02-01 | 2024-03-08 | 深圳市力生美半导体股份有限公司 | Power supply circuit and switching power supply |
| CN117674612B (en) * | 2024-02-01 | 2024-05-31 | 深圳市力生美半导体股份有限公司 | Power supply circuit and switching power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181012 |