CN203299743U - Computer power supply - Google Patents
Computer power supply Download PDFInfo
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- CN203299743U CN203299743U CN2013203558241U CN201320355824U CN203299743U CN 203299743 U CN203299743 U CN 203299743U CN 2013203558241 U CN2013203558241 U CN 2013203558241U CN 201320355824 U CN201320355824 U CN 201320355824U CN 203299743 U CN203299743 U CN 203299743U
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- 238000001914 filtration Methods 0.000 claims description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model belongs to the field of computers and relates to a computer power supply aiming to solve the problem that external interference cannot be filtered completely due to the fact that a filter circuit is adopted in an existing computer power supply. The technical scheme includes that the input end of a filter circuit is connected with an alternating-current power supply, the output end of the filter circuit is connected with the alternating-current input end of an input rectifying circuit, the direct-current output end of the input rectifying circuit is connected with the input end of a power factor correction circuit, the output end of the power factor correction circuit is connected with the direct-current input end of a power converter, the high-frequency alternating-current voltage output end of the power converter is connected with the alternating-current input end of an output rectifying circuit, the direct-current output end of the output rectifying circuit is connected with the input end of a voltage-stabilizing and current-limiting circuit, the voltage-stabilizing and current-limiting circuit is used for outputting a direct-current power supply for a computer, the output end of the voltage-stabilizing and current-limiting circuit is also connected with the input end of a control circuit, and the output end of the control circuit is connected with the control end of the power converter.
Description
Technical field
The utility model relates to computer power supply, belongs to computer realm.
Background technology
In the personal computer system, power supply is an indispensable element.The power supply of computing machine, mostly with fixing standard specification, arranges the inner tip of computer cabinet.Power supply can receive civil power (alternating current), and the conversion alternating current is that direct current gives personal computer with the supply power supply.
Power supply is the power producer of main frame, and in computer system, all by the Power supply of cabinet inside, therefore, the quality of power supply output dc voltage, will directly have influence on quality, life-span and the performance of computing machine use to all component.
The alternating voltage that computer power supply need to provide electrical network is changed output dc voltage and is supplied to computing machine, and it need to design according to the power standard of computing machine.During the active computer Power Management Design, burst and the high frequency interference by the filtering circuit filtering external world just, but when the interference of extraneous AC power was large, just filtering circuit can not be finished the work fully, so that the quality of computer power supply is not high enough.And present computer power supply just detects, protects output voltage, protects comprehensive not.
Summary of the invention
The utility model purpose be for solve the active computer power acquisition with filtering circuit can not fully filtering external interference problem, a kind of computer power supply is provided.
Computer power supply described in the utility model, it comprises filtering circuit, input rectification circuit, circuit of power factor correction, power converter, output rectification circuit, voltage stabilizing current-limiting circuit and control circuit,
The input termination AC power of filtering circuit, the output terminal of filtering circuit is connected with the ac input end of input rectification circuit, the dc output end of input rectification circuit is connected with the input end of circuit of power factor correction, the output terminal of circuit of power factor correction is connected with the direct-flow input end of power converter, the high-frequency ac voltage output terminal of power converter is connected with the ac input end of output rectification circuit, the dc output end of output rectification circuit is connected with the input end of voltage stabilizing current-limiting circuit, and the output of voltage stabilizing current-limiting circuit is used for the direct supply that computing machine is used;
The output terminal of voltage stabilizing current-limiting circuit also is connected with the input end of control circuit, and the output terminal of control circuit is connected with the control end of power converter.
Advantage of the present utility model: be provided with circuit of power factor correction in computer power supply, effectively removed external interference, principle is simple, and is easy to use, and cost is low, is conducive to popularize.
Computer power supply described in the utility model not only detects the voltage of output, carrys out the protection calculation electromechanical source, and, to the multi-faceted detection of input power, input voltage and output current, carrys out the protection calculation electromechanical source, and comprehensively, the quality of computer power supply is higher in protection.
Description of drawings
Fig. 1 is the theory diagram of computer power supply described in the utility model.
Fig. 2 is the circuit diagram of circuit of power factor correction.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1, the described computer power supply of present embodiment, it comprises filtering circuit 1, input rectification circuit 2, circuit of power factor correction 3, power converter 4, output rectification circuit 5, voltage stabilizing current-limiting circuit 6 and control circuit 11
the input termination AC power of filtering circuit 1, the output terminal of filtering circuit 1 is connected with the ac input end of input rectification circuit 2, the dc output end of input rectification circuit 2 is connected with the input end of circuit of power factor correction 3, the output terminal of circuit of power factor correction 3 is connected with the direct-flow input end of power converter 4, the high-frequency ac voltage output terminal of power converter 4 is connected with the ac input end of output rectification circuit 5, the dc output end of output rectification circuit 5 is connected with the input end of voltage stabilizing current-limiting circuit 6, 6 outputs of voltage stabilizing current-limiting circuit are used for the direct supply that computing machine is used,
The output terminal of voltage stabilizing current-limiting circuit 6 also is connected with the input end of control circuit 11, and the output terminal of control circuit 11 is connected with the control end of power converter 4.
The full bridge rectifier that input rectification circuit 2 adopts four diodes to form.
The course of work: 1 pair of 220V ac signal of filtering circuit carries out filtering to be processed, and is used for eliminating the undesired signal that the electrical network various factors produces; Input rectification circuit 2 carries out rectification for suitable DC voltage is provided with the electric signal of filtering circuit 1 output; Again through circuit of power factor correction 3, the interference in AC power is all removed, power converter 4 becomes high-frequency ac voltage with DC converting, simultaneously, input end and output terminal are isolated, output rectification circuit 5 is transformed into DC voltage with high-frequency ac voltage, then output is fit to the DC voltage that computing machine is used after voltage stabilizing current-limiting circuit 6.
Added circuit of power factor correction 3, the quality of computer power supply is greatly improved.
Embodiment two: present embodiment is described further embodiment one, and it also comprises input end current foldback circuit 7, input end overvoltage crowbar 8, output terminal current foldback circuit 9, output terminal overvoltage crowbar 10 and warning circuit 12,
AC power connects input end current foldback circuit 7 and input end overvoltage crowbar 8;
The output terminal of voltage stabilizing current-limiting circuit 6 connects output terminal current foldback circuit 9 and output terminal overvoltage crowbar 10;
The output terminal of input end current foldback circuit 7, input end overvoltage crowbar 8, output terminal current foldback circuit 9 and output terminal overvoltage crowbar 10 all is connected with the alarm command input end of warning circuit 12.
Electric current and voltage to input and output all detect, and carry out the general protection computer power supply, and the power supply quality is high.
Embodiment three: below in conjunction with Fig. 2, present embodiment is described, present embodiment is described further embodiment one, and circuit of power factor correction 3 comprises boost inductance L
f, the first switching tube S
1, second switch pipe S
2, the 3rd switching tube S
3, the 4th switching tube S
4, diode D, clamping capacitance C
1, high-frequency transformer T, single-phase output rectification circuit 3-1, output filter capacitor C
2With load R,
The cathode output end of input rectification circuit 2 and boost inductance L
fAn end be connected, boost inductance L
fThe other end be connected with the anode of diode D, the negative electrode of diode D and clamping capacitance C
1An end be connected, clamping capacitance C
1The other end be connected with the cathode output end of input rectification circuit 2,
Boost inductance L
fThe other end also with the first switching tube S
1An end be connected, the first switching tube S
1The other end and second switch pipe S
2An end be connected, second switch pipe S
2The other end be connected with the cathode output end of input rectification circuit 2,
The negative electrode of diode D also with the 3rd switching tube S
3An end be connected, the 3rd switching tube S
3The other end and the 4th switching tube S
4An end be connected, the 4th switching tube S
4The other end be connected with the cathode output end of input rectification circuit 2,
The first switching tube S
1With second switch pipe S
2The tie point extension line be connected with an end of the former limit winding of high-frequency transformer T, the 3rd switching tube S
3With the 4th switching tube S
4The tie point extension line be connected with the other end of the former limit winding of high-frequency transformer T,
The two ends of the secondary winding of high-frequency transformer T are connected with two input ends of single-phase output rectification circuit 3-1 respectively, output filter capacitor C
2And load R is connected in parallel on respectively between two output terminals of single-phase output rectification circuit 3-1.
The first switching tube S
1, second switch pipe S
2, the 3rd switching tube S
3With the 4th switching tube S
4Employing carries the IGBT power tube of body diode or carries the switch mosfet pipe of body diode.
Single-phase output rectification circuit 3-1 comprises the first output diode D
O1With the second output diode D
O2, an end of the secondary winding of high-frequency transformer T and the first output diode D
O1Anode be connected, the first output diode D
O1Negative electrode and the second output diode D
O2Negative electrode be connected, the second output diode D
O2Anode be connected with the other end of the secondary winding of high-frequency transformer T, the first output diode D
O1With the second output diode D
O2The tie point extension line and the center tap of the secondary winding of high-frequency transformer T respectively as two output terminals of single-phase output rectification circuit 3-1.
Claims (6)
1. computer power supply, it is characterized in that, it comprises filtering circuit (1), input rectification circuit (2), circuit of power factor correction (3), power converter (4), output rectification circuit (5), voltage stabilizing current-limiting circuit (6) and control circuit (11)
the input termination AC power of filtering circuit (1), the output terminal of filtering circuit (1) is connected with the ac input end of input rectification circuit (2), the dc output end of input rectification circuit (2) is connected with the input end of circuit of power factor correction (3), the output terminal of circuit of power factor correction (3) is connected with the direct-flow input end of power converter (4), the high-frequency ac voltage output terminal of power converter (4) is connected with the ac input end of output rectification circuit (5), the dc output end of output rectification circuit (5) is connected with the input end of voltage stabilizing current-limiting circuit (6), voltage stabilizing current-limiting circuit (6) output is used for the direct supply that computing machine is used,
The output terminal of voltage stabilizing current-limiting circuit (6) also is connected with the input end of control circuit (11), and the output terminal of control circuit (11) is connected with the control end of power converter (4).
2. computer power supply according to claim 1; it is characterized in that; it also comprises input end current foldback circuit (7), input end overvoltage crowbar (8), output terminal current foldback circuit (9), output terminal overvoltage crowbar (10) and warning circuit (12)
AC power connects input end current foldback circuit (7) and input end overvoltage crowbar (8);
The output terminal of voltage stabilizing current-limiting circuit (6) connects output terminal current foldback circuit (9) and output terminal overvoltage crowbar (10);
The output terminal of input end current foldback circuit (7), input end overvoltage crowbar (8), output terminal current foldback circuit (9) and output terminal overvoltage crowbar (10) all is connected with the alarm command input end of warning circuit (12).
3. computer power supply according to claim 1, is characterized in that, the full bridge rectifier that input rectification circuit (2) adopts four diodes to form.
4. computer power supply according to claim 1, is characterized in that, circuit of power factor correction (3) comprises boost inductance L
f, the first switching tube S
1, second switch pipe S
2, the 3rd switching tube S
3, the 4th switching tube S
4, diode D, clamping capacitance C
1, high-frequency transformer T, single-phase output rectification circuit (3-1), output filter capacitor C
2With load R,
The cathode output end of input rectification circuit (2) and boost inductance L
fAn end be connected, boost inductance L
fThe other end be connected with the anode of diode D, the negative electrode of diode D and clamping capacitance C
1An end be connected, clamping capacitance C
1The other end be connected with the cathode output end of input rectification circuit (2),
Boost inductance L
fThe other end also with the first switching tube S
1An end be connected, the first switching tube S
1The other end and second switch pipe S
2An end be connected, second switch pipe S
2The other end be connected with the cathode output end of input rectification circuit (2),
The negative electrode of diode D also with the 3rd switching tube S
3An end be connected, the 3rd switching tube S
3The other end and the 4th switching tube S
4An end be connected, the 4th switching tube S
4The other end be connected with the cathode output end of input rectification circuit (2),
The first switching tube S
1With second switch pipe S
2The tie point extension line be connected with an end of the former limit winding of high-frequency transformer T, the 3rd switching tube S
3With the 4th switching tube S
4The tie point extension line be connected with the other end of the former limit winding of high-frequency transformer T,
The two ends of the secondary winding of high-frequency transformer T are connected with two input ends of single-phase output rectification circuit (3-1) respectively, output filter capacitor C
2And load R is connected in parallel on respectively between two output terminals of single-phase output rectification circuit (3-1).
5. computer power supply according to claim 4, is characterized in that the first switching tube S
1, second switch pipe S
2, the 3rd switching tube S
3With the 4th switching tube S
4Employing carries the IGBT power tube of body diode or carries the switch mosfet pipe of body diode.
6. computer power supply according to claim 4, is characterized in that, single-phase output rectification circuit (3-1) comprises the first output diode D
O1With the second output diode D
O2, an end of the secondary winding of high-frequency transformer T and the first output diode D
O1Anode be connected, the first output diode D
O1Negative electrode and the second output diode D
O2Negative electrode be connected, the second output diode D
O2Anode be connected with the other end of the secondary winding of high-frequency transformer T, the first output diode D
O1With the second output diode D
O2The tie point extension line and the center tap of the secondary winding of high-frequency transformer T respectively as two output terminals of single-phase output rectification circuit (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203558241U CN203299743U (en) | 2013-06-20 | 2013-06-20 | Computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203558241U CN203299743U (en) | 2013-06-20 | 2013-06-20 | Computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203299743U true CN203299743U (en) | 2013-11-20 |
Family
ID=49575742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203558241U Expired - Fee Related CN203299743U (en) | 2013-06-20 | 2013-06-20 | Computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203299743U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765831A (en) * | 2016-08-18 | 2018-03-06 | 中国长城科技集团股份有限公司 | A kind of computer, computer power supply and its warning circuit |
-
2013
- 2013-06-20 CN CN2013203558241U patent/CN203299743U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765831A (en) * | 2016-08-18 | 2018-03-06 | 中国长城科技集团股份有限公司 | A kind of computer, computer power supply and its warning circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20140620 |
|
| EXPY | Termination of patent right or utility model |