CN205319950U - Computer power supply - Google Patents
Computer power supply Download PDFInfo
- Publication number
- CN205319950U CN205319950U CN201620025971.6U CN201620025971U CN205319950U CN 205319950 U CN205319950 U CN 205319950U CN 201620025971 U CN201620025971 U CN 201620025971U CN 205319950 U CN205319950 U CN 205319950U
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- China
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- circuit
- triode
- diode
- width modulation
- electric capacity
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Abstract
The utility model relates to a computer power supply, including input rectification filter circuit, major loop, secondary rectifier circuit, auxiliary electrical power source, pulse width modulation circuit, voltage comparator circuit and switch circuit, the input rectification filter circuit be connected with major loop and auxiliary electrical power source respectively, auxiliary electrical power source has two outputs, the output and secondary rectifier circuit's the input of major loop are connected, secondary rectifier circuit has three output, respectively with computer mainboard connection, pulse width modulation circuit includes two output control terminal, two output control terminal respectively with the major loop in controlled device be connected, pulse width modulation circuit still is connected with switch circuit, voltage comparator circuit respectively with pulse width modulation circuit, switch circuit, computer mainboard connection. The utility model discloses characteristics such as input voltage range is wide, electromagnetic compatibility good, the output voltage precision high, the operational reliability is high, adaptive capacity to environment is strong.
Description
Technical field
The utility model belongs to computer field, it relates to a kind of computer power supply.
Background technology
At present, most computers power acquisition ATX standard motherboard framework, traditional ATX power supply is comparatively simple because cost reason designs, and every technical indicator is lower, and reliability can not meet important events needs.
Practical novel content
In view of this, the purpose of this utility model is to provide a kind of computer power supply.
For achieving the above object, the utility model provides following technical scheme: a kind of computer power supply, comprises input rectifying filtering circuit, master loop, secondary rectification circuit, accessory power supply, pulse-width modulation circuit, voltage comparator circuit and switch circuit; Described input rectifying filtering circuit is connected with master loop and accessory power supply respectively; Described accessory power supply has two output terminals, and one of them output terminal is connected with pulse-width modulation circuit, and another output terminal is connected with computer main board; The output terminal of described master loop is connected with the input terminus of secondary rectification circuit, and described secondary rectification circuit has three output terminals, is connected with computer main board respectively; Described pulse-width modulation circuit comprises two output control terminals, and two output control terminals are connected with the controlled device in master loop respectively; Described pulse-width modulation circuit is also connected with switch circuit; Described voltage comparator circuit is connected with pulse-width modulation circuit, switch circuit, computer main board respectively.
Further, described master loop comprises electric capacity C1, electric capacity C2, triode Q1, triode Q2, diode D1～D4 and transformer T1, and described electric capacity C1 is parallel to the output terminal of input rectifying filtering circuit with electric capacity C2 after connecting, the collector electrode of described triode Q1 is connected with the positive pole of electric capacity C1, the emtting electrode of triode Q1 is connected with the collector electrode of triode Q2, the emtting electrode of triode Q2 is connected with the negative pole of electric capacity C2, the base stage of triode A1 is connected with the controlled end of pulse-width modulation circuit respectively with the base stage of triode Q2, the positive pole of described diode D3 is connected with the negative pole of diode D4, the negative pole of diode D3 is connected with the collector electrode of triode Q1, the positive pole of diode Q4 is connected with the emtting electrode of triode Q2, described triode Q1 is connected with the public end of diode D4 with public end and the diode D3 of triode Q2, one end and the triode Q1 of a described transformer T1 side are connected with the public end of triode Q2, the other end of a transformer T1 side and electric capacity C1 are connected with the public end of electric capacity C2, the secondary side of described transformer T1 comprises two wiring ends and a centre tap, one of them wiring end is connected with the positive pole of diode D1, the negative pole connecting secondary rectifying circuit of diode D1, another wiring end is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with the negative pole of diode D1.
Further, described input rectifying filtering circuit comprises the first step EMI filter circuit, second stage EMI filter circuit and the full-bridge rectification filter circuit that connect successively.
The beneficial effects of the utility model are:
The features such as the utility model wide input voltage range, electromagnetic compatibility are good, output voltage precision height, working reliability height, environmental adaptation ability are strong.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is structure diagram of the present utility model;
Fig. 2 is the schematic circuit diagram of master loop.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
A kind of computer power supply, comprises input rectifying filtering circuit, master loop, secondary rectification circuit, accessory power supply, pulse-width modulation circuit, voltage comparator circuit and switch circuit; Described input rectifying filtering circuit is connected with master loop and accessory power supply respectively; Described accessory power supply has two output terminals, and one of them output terminal is connected with pulse-width modulation circuit, and another output terminal is connected with computer main board; The output terminal of described master loop is connected with the input terminus of secondary rectification circuit, and described secondary rectification circuit has three output terminals, is connected with computer main board respectively; Described pulse-width modulation circuit comprises two output control terminals, and two output control terminals are connected with the controlled device in master loop respectively; Described pulse-width modulation circuit is also connected with switch circuit; Described voltage comparator circuit is connected with pulse-width modulation circuit, switch circuit, computer main board respectively.
Described pulse-width modulation circuit comprises pulse width modulating chip TL494, and described voltage comparator circuit comprises voltage comparator chip LM393, described switch circuit comprises resistance R1～R4, triode Q3, one end of described resistance R1 is connected with 14 pin of pulse width modulating chip TL494, it is 4 pin with pulse width modulating chip TL494 that the other end of resistance R1 divides, the collector electrode of triode Q3 connects, the base stage of described triode is connected through 1 pin of resistance R2 with voltage comparator chip LM393, the emtting electrode of triode Q3 exports POW-OK signal, one end of described resistance R4 respectively with 14 pin of pulse width modulating chip TL494, 3 pin of voltage comparator chip LM393 connect, the other end of resistance R4 respectively with computer main board, one end of resistance R3 connects, the other end of described resistance R3 is connected with 6 pin of voltage comparator chip.
Described master loop comprises electric capacity C1, electric capacity C2, triode Q1, triode Q2, diode D1～D4 and transformer T1, and described electric capacity C1 is parallel to the output terminal of input rectifying filtering circuit with electric capacity C2 after connecting, the collector electrode of described triode Q1 is connected with the positive pole of electric capacity C1, the emtting electrode of triode Q1 is connected with the collector electrode of triode Q2, the emtting electrode of triode Q2 is connected with the negative pole of electric capacity C2, the base stage of triode A1 is connected with the controlled end of pulse-width modulation circuit respectively with the base stage of triode Q2, the positive pole of described diode D3 is connected with the negative pole of diode D4, the negative pole of diode D3 is connected with the collector electrode of triode Q1, the positive pole of diode Q4 is connected with the emtting electrode of triode Q2, described triode Q1 is connected with the public end of diode D4 with public end and the diode D3 of triode Q2, one end and the triode Q1 of a described transformer T1 side are connected with the public end of triode Q2, the other end of a transformer T1 side and electric capacity C1 are connected with the public end of electric capacity C2, the secondary side of described transformer T1 comprises two wiring ends and a centre tap, one of them wiring end is connected with the positive pole of diode D1, the negative pole connecting secondary rectifying circuit of diode D1, another wiring end is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with the negative pole of diode D1.
Described input rectifying filtering circuit comprises the first step EMI filter circuit, second stage EMI filter circuit and the full-bridge rectification filter circuit that connect successively.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although the utility model being described in detail by above preferred embodiment, but those skilled in the art are to be understood that, in the form and details it can be made various change, and do not deviate the utility model claim book limited range.
Claims (3)
1. a computer power supply, it is characterised in that: comprise input rectifying filtering circuit, master loop, secondary rectification circuit, accessory power supply, pulse-width modulation circuit, voltage comparator circuit and switch circuit; Described input rectifying filtering circuit is connected with master loop and accessory power supply respectively; Described accessory power supply has two output terminals, and one of them output terminal is connected with pulse-width modulation circuit, and another output terminal is connected with computer main board; The output terminal of described master loop is connected with the input terminus of secondary rectification circuit, and described secondary rectification circuit has three output terminals, is connected with computer main board respectively; Described pulse-width modulation circuit comprises two output control terminals, and two output control terminals are connected with the controlled device in master loop respectively; Described pulse-width modulation circuit is also connected with switch circuit; Described voltage comparator circuit is connected with pulse-width modulation circuit, switch circuit, computer main board respectively.
2. computer power supply according to claim 1, it is characterized in that: described master loop comprises electric capacity C1, electric capacity C2, triode Q1, triode Q2, diode D1～D4 and transformer T1, described electric capacity C1 is parallel to the output terminal of input rectifying filtering circuit with electric capacity C2 after connecting, the collector electrode of described triode Q1 is connected with the positive pole of electric capacity C1, the emtting electrode of triode Q1 is connected with the collector electrode of triode Q2, the emtting electrode of triode Q2 is connected with the negative pole of electric capacity C2, the base stage of triode A1 is connected with the controlled end of pulse-width modulation circuit respectively with the base stage of triode Q2, the positive pole of described diode D3 is connected with the negative pole of diode D4, the negative pole of diode D3 is connected with the collector electrode of triode Q1, the positive pole of diode Q4 is connected with the emtting electrode of triode Q2, described triode Q1 is connected with the public end of diode D4 with public end and the diode D3 of triode Q2, one end and the triode Q1 of a described transformer T1 side are connected with the public end of triode Q2, the other end of a transformer T1 side and electric capacity C1 are connected with the public end of electric capacity C2, the secondary side of described transformer T1 comprises two wiring ends and a centre tap, one of them wiring end is connected with the positive pole of diode D1, the negative pole connecting secondary rectifying circuit of diode D1, another wiring end is connected with the positive pole of diode D2, the negative pole of diode D2 is connected with the negative pole of diode D1.
3. computer power supply according to claim 2, it is characterised in that: described input rectifying filtering circuit comprises the first step EMI filter circuit, second stage EMI filter circuit and the full-bridge rectification filter circuit that connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025971.6U CN205319950U (en) | 2016-01-12 | 2016-01-12 | Computer power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025971.6U CN205319950U (en) | 2016-01-12 | 2016-01-12 | Computer power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205319950U true CN205319950U (en) | 2016-06-15 |
Family
ID=56204170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620025971.6U Expired - Fee Related CN205319950U (en) | 2016-01-12 | 2016-01-12 | Computer power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205319950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712529A (en) * | 2017-01-17 | 2017-05-24 | 浙江大学 | High-efficiency and high-power density isolation DC-DC (Direct Current-Direct Current) conversion circuit based on GaN |
-
2016
- 2016-01-12 CN CN201620025971.6U patent/CN205319950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712529A (en) * | 2017-01-17 | 2017-05-24 | 浙江大学 | High-efficiency and high-power density isolation DC-DC (Direct Current-Direct Current) conversion circuit based on GaN |
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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: 20160615 Termination date: 20170112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |