CN201562231U - Power supply unit - Google Patents

Power supply unit Download PDF

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Publication number
CN201562231U
CN201562231U CN2009201595729U CN200920159572U CN201562231U CN 201562231 U CN201562231 U CN 201562231U CN 2009201595729 U CN2009201595729 U CN 2009201595729U CN 200920159572 U CN200920159572 U CN 200920159572U CN 201562231 U CN201562231 U CN 201562231U
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CN
China
Prior art keywords
power
standby
voltage
primary
power supply
Prior art date
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Expired - Fee Related
Application number
CN2009201595729U
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Chinese (zh)
Inventor
李鸿钦
李智雄
陈宗庆
李耕榕
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Acbel Polytech Inc
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Acbel Polytech Inc
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Filing date
Publication date
Priority to TW098208474U priority Critical patent/TWM368127U/en
Application filed by Acbel Polytech Inc filed Critical Acbel Polytech Inc
Priority to CN2009201595729U priority patent/CN201562231U/en
Priority to JP2009004482U priority patent/JP3153603U/en
Application granted granted Critical
Publication of CN201562231U publication Critical patent/CN201562231U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

The utility model discloses a power supply unit comprising a power factor correction unit, a main power DC-to-DC converter, a standby power generation unit and a battery module. The power factor correction unit is used for receiving and adjusting electric supply so as to output a direct current voltage. The main power DC-to-DC converter is used for receiving and converting the direct current voltage so as to output a main power supply to a main power line of a computer. The standby power generation unit is used for receiving and converting the direct current voltage when the mains supply is effective, so as to output a charging voltage and a stable standby power supply to a standby power line of the computer, when the mains supply fails suddenly, the charging voltage is received from the main power line to stabilize the standby main power supply and output the stable standby power supply to the standby power line. The battery module is used for receiving the charging voltage for charging when the mains supply is effective, and providing the standby main power supply to the main power line.

Description

Power supply device
Technical field
The utility model relates to the power supply device of a kind of power supply device, particularly a kind of computing machine.
Background technology
Along with the progress of science and technology, desk-top computer has almost become one of electronic installation of everyone required use, and in order to allow desk-top computer start shooting smoothly, power supply unit is being played the part of considerable role.Generally speaking, the power supply unit in the desk-top computer is not have the standby power supply function.Fig. 1 is the calcspar of existing power supply supply 100.Power supply unit 100 comprises power factor correction (power factor correction, PFC) unit 101, primary power DC-DC converter 103, secondary source DC-DC converter 105, d-c transformer 107, voltage stabilizer 109, and capacitor C Bulk
In the prior art, when civil power AC was effective, power factor correction unit 101 can receive and adjust civil power AC, gives primary power DC-DC converter 103 and d-c transformer 107 with output dc voltage DC, and to capacitor C BulkCharge.Then, primary power DC-DC converter 103 can be changed DC voltage DC, with main power line (in the drawings do not illustrate) and the secondary source DC-DC converter 105 of output primary power MP to desk-top computer.
Thus, secondary source DC-DC converter 105 can be changed primary power MP, to export a plurality of secondary source lines (not illustrating in the drawings) that a plurality of secondary source SP1~SP3 give desk-top computer respectively.In addition, d-c transformer 107 can be changed DC voltage DC equally, gives voltage stabilizer 109 to export the standby power FSTB that floats.Thus, voltage stabilizer 109 can carry out voltage stabilizing to the standby power FSTB that floats, and stablizes the standby power line (in the drawings do not illustrate) of standby power STB to desk-top computer to export.
Because required all power pack when primary power DC-DC converter 103, secondary source DC-DC converter 105 and voltage stabilizer 109 produce desk-top computer work respectively, so desk-top computer is able to normal boot-strap work.Yet when the civil power catastrophic failure (for example jump), the power supply that power supply unit is exported can be ended output suddenly, and capacitor C at this moment BulkThe electric charge of being kept in approximately only can allow power supply unit 100 keep effective output of tens microseconds, so can cause the user to have little time backup information, even more seriously also can damage desk side computer system and/or inner member.
In order to solve such problem, the simplest mode is exactly UPS of outrigger (uninterruptible power supply, UPS) with standby power supply as desk-top computer, but, utilize UPS to solve the problems referred to above and be best settling mode absolutely not if consider with the cost aspect.
The utility model content
By above-mentioned reason, the utility model provides a kind of power supply device.
The utility model provides a kind of power supply device, comprises power factor correction unit, primary power DC-DC converter, standby power generation unit, and battery modules.Power factor correction unit is used output dc voltage in order to receive and to adjust civil power.Primary power DC-DC converter connects power factor correction unit, in order to receive and to change described DC voltage, uses the main power line of output primary power to computing machine.
The standby power generation unit connects power factor correction unit, in order to when civil power is effective, receive and change described DC voltage, use the output charging voltage and the standby power line of standby power to computing machine stablized in output, and when the civil power catastrophic failure, carry out voltage stabilizing from described main power line reception and to standby primary power, use the described stable standby power of output to described standby power line.Battery modules connects the standby power generation unit, in order to when civil power is effective, receives described charging voltage charging, and when the civil power catastrophic failure, provides extremely described main power line of standby primary power.
In an embodiment of the present utility model, the standby power generation unit comprises d-c transformer, first diode, second diode, and voltage stabilizer.D-c transformer has primary side and secondary side, and receives described DC voltage to produce float standby power and described charging voltage in secondary side through primary side.The anode tap of first diode is in order to receive described unsteady standby power, and the anode tap of second diode then connects described main power line.Voltage stabilizer connects the cathode terminal of first and second diode, in order to receive and described primary power or standby primary power are carried out voltage stabilizing, uses the described stable standby power of generation.
In an embodiment of the present utility model, power supply device also comprises detecting unit, connects battery modules, in order to receive and the detecting civil power whether effectively, and send charging signals or discharge signal according to this.When detecting unit when to detect civil power be effective, export described charging signals, otherwise export described discharge signal.
In an embodiment of the present utility model, battery modules comprises administrative unit, switch element, rechargeable type battery, and pressure unit.Administrative unit connects detecting unit, when receiving described charging signals, and output enable signal, and when receiving described discharge signal, the output disable signal.Switch element connection management unit and standby power generation unit in order to receiving described charging voltage, and when receiving described enable signal, transmit described charging voltage, and when receiving described disable signal, intercept described charging voltage.
The rechargeable type battery connects switch element, when being used for switch element and receiving described enable signal, receives described charging voltage charging, and when switch element receives described disable signal, provides release voltage.Pressure unit connects the rechargeable type battery, and acts on switch element and receive in the described disable signal, in order to receiving described release voltage, and after described release voltage is depressurized to described standby primary power, to provide to described main power line.
In an embodiment of the present utility model, power supply device also comprises secondary source DC-DC converter.Secondary source DC-DC converter connects described main power line, in order to receive from described main power line and to change described primary power or standby primary power, uses and exports the many bar secondary source lines of a plurality of secondary sources to computing machine respectively.
In an embodiment of the present utility model, described primary power and standby primary power be+12V, and described a plurality of secondary source comprises at least+5V ,+3.3V and-12V.Described charging voltage is higher than described primary power and standby primary power.
In an embodiment of the present utility model, described unsteady standby power is higher than described stable standby power, and described stable standby power is+5V.
In an embodiment of the present utility model, power factor correction unit can be active or passive type power factor corrector.
In an embodiment of the present utility model, computing machine can be desk-top computer (desktopcomputer device), servomechanism (server) or workstation (workstation).
In an embodiment of the present utility model, power supply device is advanced technology expansion of power supply supply (ATX powers upply).
Based on as can be known above-mentioned, when civil power was invalid, standby primary power can be provided battery modules so that power supply device can not ended output suddenly.Thus, the user just has a little time backup information, even can also carry out the normal shutdown flow process to desk-top computer, to prevent the damage of desk side computer system and/or inner member.
Above-mentioned general description and following specific embodiment only are exemplary and illustrative, and it can not limit the scope that the utility model is asked.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is the calcspar of existing power supply supply;
Fig. 2 is the synoptic diagram of the desk-top computer of the utility model one embodiment;
Fig. 3 is the calcspar of the standby power generation unit of the utility model one embodiment;
Fig. 4 is the calcspar of the battery modules of the utility model one embodiment.
The main element symbol description:
100: power supply unit; 101,205: power factor correction unit;
103,207: primary power DC-DC converter; 105,215: secondary source DC-DC converter;
107,301: d-c transformer; 109,303: voltage stabilizer;
200: desk-top computer; 201: power supply device;
202: desk side computer system; 203: the desk-top computer inner member;
209: the standby power generation unit; 211: detecting unit;
213: battery modules; 401: administrative unit;
403: switch element; 405: the rechargeable type battery;
407: pressure unit; C Bulk: electric capacity;
D1, D2: diode; AC: civil power;
DC: DC voltage; MP: primary power;
SMP: standby primary power; SP1~SP3: secondary source;
STB: stablize standby power; FSTB: standby power floats;
CV: charging voltage; CS: charging signals;
DS: discharge signal; MPB: main power line;
SPB1~SPB3: secondary source line; STBPB: standby power line;
EN: enable signal; DIS: disable signal;
RV: release voltage.
Embodiment
With reference to embodiment of the present utility model, the example of described embodiment is described in the accompanying drawings.In addition, in graphic and embodiment, use the identical or similar portions of element/member/symbology of same numeral.
Fig. 2 is the synoptic diagram of the desk-top computer 200 of the utility model one embodiment.Please refer to Fig. 2, desk-top computer 200 comprises power supply device 201, desk side computer system 202, and desk-top computer inner member 203.Wherein, power supply device 201 can be advanced technology expansion of power supply supply (ATX power supply).
Power supply device 201 comprises power factor correction (power factor correction, PFC) unit 205, primary power DC-DC converter 207, standby power generation unit 209, detecting unit 211, battery modules 213, secondary source DC-DC converter 215, and capacitor C BulkWherein, power factor correction unit 205 is in order to receive and to adjust civil power AC (being generally AC110V or AC220V that Utilities Electric Co. supplies), uses output dc voltage DC with to capacitor C BulkCharge.
In the present embodiment, power factor correction unit 205 can be active power factor corrector (active power factor corrector) or passive type power factor corrector (passivepower factor corrector).Yet, no matter be active or the passive type power factor corrector all belongs to the utility model those skilled in the art common practise, so at this and no longer given unnecessary details its principle of work.
Primary power DC-DC converter 207 connects power factor correction unit 205, in order to receive and conversion dc voltage DC, uses main power line (main-power bus) MPB of output primary power (main-power) MP to desk-top computer 200.In the present embodiment, primary power MP for example can be+12V.
Standby power generation unit 209 connects power factor correction unit 205 and main power line MPB, in order to when civil power AC is effective (that is Utilities Electric Co.'s power supply is normal), reception and conversion dc voltage DC use output charging voltage CV and standby power line (the standby power bus) STBPB of standby power STB to desk-top computer 200 stablized in output.In addition, when civil power AC catastrophic failure (that is Utilities Electric Co.'s power supply is undesired), standby power generation unit 209 can carry out voltage stabilizing (describing in detail again after the appearance) from main power line MPB reception and to the standby primary power SMP that battery modules 213 is provided, and uses output and stablizes standby power STB to standby power line STBPB.In the present embodiment, charging voltage CV is higher than primary power MP, and for example can be+35V, but is not restricted to this.In addition, stablize standby power STB and for example can be+5V.
Fig. 3 is the calcspar of the standby power generation unit 209 of the utility model one embodiment.With reference to Fig. 2 and Fig. 3, standby power generation unit 209 comprises d-c transformer 301, diode D1 and D2, and voltage stabilizer 303.D-c transformer 301 has primary side and secondary side, and sees through primary side reception DC voltage DC to produce float standby power FSTB and charging voltage CV in secondary side.At this, the primary side that can understand d-c transformer 301 has one group of coil, and the secondary side of d-c transformer 301 has two groups of coils, but is not restricted to this.In other embodiment of the utility model, also can independently use two d-c transformers to produce float standby power FSTB and charging voltage CV respectively.In the present embodiment, the standby power FSTB that floats is higher than and stablizes standby power STB, for example between 7V~8V.
The anode tap of diode D1 is in order to receive the standby power FSTB that floats, and the cathode terminal of diode D1 then connects voltage stabilizer 303.The anode tap of diode D2 connects main power line MPB, and the cathode terminal of diode D2 connects voltage stabilizer 303 equally.Voltage stabilizer 303 is used to produce and is stablized standby power STB in order to receive and the standby primary power SMP that primary power MP or battery modules 113 are provided is carried out voltage stabilizing.
With reference to Fig. 2, detecting unit 211 is in order to reception and whether effectively to detect civil power AC, and sends charging signals CS or discharge signal DS according to this.In the present embodiment, when detecting unit 211 when to detect civil power AC be effective, then export charging signals CS.In addition, when detecting unit 211 when to detect civil power AC be invalid, then export discharge signal DS.
Battery modules 213 connects standby power generation units 209 and detecting units 211, in order to when civil power AC is effective, receives charging voltage CV charging, and when civil power AC catastrophic failure (for example jumping), provides standby primary power SMP to main power line MPB.In the present embodiment, charging voltage CV is higher than standby primary power SMP, and standby primary power SMP for example can be+12V.
Fig. 4 is the calcspar of the battery modules 213 of the utility model one embodiment.With reference to Fig. 2~Fig. 4, battery modules 213 comprises administrative unit 401, switch element 403, rechargeable type battery 405, and pressure unit 407.Administrative unit 401 connects detecting units 211, when receiving charging signals CS, and output enable signal EN, and when receiving discharge signal DS, output disable signal DIS.Switch element 403 connection management unit 401 and standby power generation unit 209, in order to reception charging voltage CV, and when receiving enable signal EN, transmission charging voltage CV, and when receiving disable signal DIS, intercept charging voltage CV.
Rechargeable type battery 405 connects switch elements 403, when receiving enable signal EN in order to switch element 403, receives charging voltage CV charging, and when switch element 403 receives disable signal DIS, provides release voltage RV.In the present embodiment, release voltage RV for example between+12.8V between+the 25.6V, but be not restricted to this.Pressure unit 407 connects rechargeable type battery 405 and main power line MPB, and acting on switch element 403 receives in the disable signal DIS, in order to receiving release voltage RV, and after release voltage RV is depressurized to standby primary power SMP, to provide to main power line MPB.
With reference to Fig. 2, secondary source DC-DC converter 215 connects main power line MPB, in order to receive and conversion primary power MP or standby primary power SMP, use and export many bar secondary source lines (sub-power buses) SPB1~SPB3 of a plurality of secondary sources (sub-powers) SP1~SP3 respectively to desk-top computer 200 from main power line MPB.In the present embodiment, secondary source SP1~SP3 for example be respectively+5V ,+3.3V and-12V.
Based on as can be known above-mentioned, under normal state is powered by Utilities Electric Co., because power factor correction unit 205 can receive civil power AC, to such an extent as to power factor correction unit 205 can be adjusted civil power AC with output dc voltage DC.Also also because of like this, primary power DC-DC converter 207 promptly can conversion dc voltage DC with output primary power MP to main power line MPB, thereby make secondary source DC-DC converter 215 to receive and conversion primary power MP, to export secondary source SP1~SP3 respectively to secondary source line SPB1~SPB3 from main power line MPB.
The same time, standby power generation unit 209 also can conversion dc voltage DC, uses output charging voltage CV and output is stablized standby power STB to standby power line STBPB.Thus, because primary power DC-DC converter 207, standby power generation unit 209 and secondary source DC-DC converter 215 required all power pack (that is primary power MP, secondary source SP1~SP3 and standby power STB) when produce desk-top computer 200 work this moment respectively, so desk-top computer 200 can normal boot-strap work.
In addition, because this moment, detecting unit 211 can detect civil power AC for effective, so detecting unit 211 can be exported the administrative unit 401 that charging signals CS gives battery modules 213, thereby make that administrative unit 401 can output enable signal EN, the charging voltage CV that it was received is transferred to rechargeable type battery 405 to cause switch element 403.Thus, rechargeable type battery 405 promptly can begin to charge, but because pressure unit 407 only acts on switch element 403 and receive in the disable signal DIS, so be under the effective state at civil power AC, battery modules 213 can't provide standby primary power SMP to main power line MPB.
Yet, under Utilities Electric Co.'s power supply abnormal state of affairs (for example suddenly/and the moment jumping), because power factor correction unit can't receive civil power AC 205 this moments, to such an extent as to power factor correction unit 205 can output dc voltage DC.Also also because of so, capacitor C BulkThe electric charge of being kept in approximately only can allow power supply device 201 keep effective output of tens microseconds, and required all power pack when primary power DC-DC converter 207, standby power generation unit 209 and secondary source DC-DC converter 215 just can't produce desk-top computer 200 work respectively afterwards.
By above-mentioned reason, it is invalid that detecting unit 211 can detect civil power AC this moment, so detecting unit 211 can be exported the administrative unit 401 that discharge signal DS gives battery modules 213, thereby make administrative unit 401 can export disable signal DIS, intercept the charging voltage CV (that is rechargeable type battery 405 no longer charges) that it was received to cause switch element 403.Thus, rechargeable type battery 405 can provide release voltage RV (promptly beginning to discharge stored electric charge) to give pressure unit 407 immediately.
Because pressure unit 407 can act on switch element 403 and receive in the disable signal DIS, so under civil power AC is invalid state, battery modules 213 can provide standby primary power SMP to main power line MPB, thereby make the voltage stabilizer 303 of standby power generation unit 209 to receive standby primary power SMP, and after stablizing standby power STB, export standby primary power SMP voltage stabilizing to standby power line STBPB from main power line MPB.
In addition, secondary source DC-DC converter 215 also can receive standby primary power SMP from main power line MPB, and changes standby primary power SMP to export secondary source SP1~SP3 respectively to secondary source line SPB1~SPB3.Thus, because standby power generation unit 209, battery modules 213 and secondary source DC-DC converter 215 required all power pack when produce desk-top computer 200 work this moment respectively, so desk-top computer 200 also is able to normal boot-strap work.
Hence one can see that, even if civil power AC jumps suddenly, power supply device 201 can not ended output suddenly yet, to such an extent as to the user has a little time (time length must be looked closely the charge capacity of rechargeable type battery 405 and be discussed) and comes backup information, even can also carry out the normal shutdown flow process to desk-top computer 200, to prevent the damage of desk side computer system 202 and/or inner member 203 (for example memory body, hard disc, CPU... etc.).
In addition, discuss according to the specifications of advanced technology expansion of power supply supply (ATX power supply), because advanced technology expansion of power supply supply itself promptly need provide above-mentioned stable standby power, to such an extent as to the utility model can produce around one group of coil by many in originally in order to the secondary side (that is the described d-c transformer 107 of prior art) that produces the d-c transformer of stablizing standby power in order to the charging voltage that the rechargeable type battery is charged.Therefore, do not need additional designs to produce the circuit of charging voltage to save cost.Moreover, because the release voltage that rechargeable type battery of the present utility model is provided only need see through one-level reduction voltage circuit (buck circuit, be pressure unit) just can produce standby primary power, to such an extent as to the charge capacity of rechargeable type battery can not be consumed excessively.Therefore, can elongate the time that the rechargeable type battery provides standby primary power.
In addition, the foregoing description is to be that example is done explanation with the desk-top computer, but according to the skill that the utility model proposed, if the computing machine of other types (for example: servomechanism, workstation ... etc.) need stablize the words of standby power, power supply device of the present utility model is suitable equally, so the scope of the utility model institute desire request is not able to the represented content of the foregoing description and is restricted.
It should be noted that at last: above embodiment is only in order to explanation the technical solution of the utility model but not limit it, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement the technical solution of the utility model, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solutions of the utility model.

Claims (10)

1. a power supply device is characterized in that, is used for a computing machine, and described power supply device comprises:
One power factor correction unit in order to receive and to adjust a civil power, is used output one direct current voltage;
One primary power DC-DC converter connects described power factor correction unit, in order to receive and to change described DC voltage, uses the main power line of output one primary power to described computing machine;
One standby power generation unit, connect described power factor correction unit and described main power line, in order to when described civil power is effective, receive and change described DC voltage, use output one charging voltage and export one and stablize an extremely standby power line of described computing machine of standby power, and when described civil power catastrophic failure, receive and a standby primary power is carried out voltage stabilizing from described main power line, use the described stable standby power of output to described standby power line;
One battery modules connects described standby power generation unit, in order to when described civil power is effective, receives described charging voltage charging, and when described civil power catastrophic failure, provides described standby primary power to described main power line.
2. power supply device according to claim 1 is characterized in that, wherein said standby power generation unit comprises:
One d-c transformer has primary side and secondary side, and receives described DC voltage to produce a unsteady standby power and a described charging voltage in secondary side through primary side;
One first diode, its anode tap is in order to receive described unsteady standby power;
One second diode, its anode tap connects described main power line;
One voltage stabilizer connects the cathode terminal of described first diode and described second diode, produces described stable standby power in order to receive and described primary power or described standby primary power are carried out voltage stabilizing, to use.
3. power supply device according to claim 2 is characterized in that, wherein said unsteady standby power is higher than described stable standby power, and described stable standby power is+5V.
4. power supply device according to claim 1 is characterized in that, also comprises:
One detecting unit connects described battery modules, in order to receiving and whether effectively to detect described civil power, and sends a charging signals or a discharge signal according to this,
Wherein, when described detecting unit when to detect described civil power be effective, export described charging signals, otherwise export described discharge signal.
5. power supply device according to claim 4 is characterized in that, wherein said battery modules comprises:
One administrative unit connects described detecting unit, when receiving described charging signals, exports an activation signal, and when receiving described discharge signal, exports a disable signal;
One switch element connects described administrative unit and described standby power generation unit, in order to receiving described charging voltage, and when receiving described enable signal, transmits described charging voltage, and when receiving described disable signal, intercepts described charging voltage;
One rechargeable type battery connects described switch element, when receiving described enable signal in order to described switch element, receives described charging voltage charging, and when described switch element receives described disable signal, provides a release voltage;
One pressure unit connects described rechargeable type battery, and acts on described switch element and receive in the described disable signal, in order to receiving described release voltage, and after described release voltage is depressurized to described standby primary power, provides to described main power line.
6. power supply device according to claim 1 is characterized in that, also comprises:
Primary power source DC-DC converter connects described main power line, exports the many bar secondary source lines of a plurality of secondary sources to described computing machine respectively in order to receive from described main power line and to change described primary power or described standby primary power, to use.
7. power supply device according to claim 6 is characterized in that, wherein said primary power and described standby primary power be+12V, and described a plurality of secondary source comprises at least+5V ,+3.3V and-12V.
8. power supply device according to claim 7 is characterized in that, wherein said charging voltage is higher than described primary power and described standby primary power.
9. power supply device according to claim 1 is characterized in that, wherein said power factor correction unit is an active power factor corrector or a passive type power factor corrector.
10. power supply device according to claim 1 is characterized in that, wherein said computing machine is a desk-top computer, a servomechanism or a workstation.
CN2009201595729U 2009-05-15 2009-06-16 Power supply unit Expired - Fee Related CN201562231U (en)

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TW098208474U TWM368127U (en) 2009-05-15 2009-05-15 Power supply device
CN2009201595729U CN201562231U (en) 2009-05-15 2009-06-16 Power supply unit
JP2009004482U JP3153603U (en) 2009-05-15 2009-06-30 Power supply device

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TW098208474U TWM368127U (en) 2009-05-15 2009-05-15 Power supply device
CN2009201595729U CN201562231U (en) 2009-05-15 2009-06-16 Power supply unit
JP2009004482U JP3153603U (en) 2009-05-15 2009-06-30 Power supply device

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CN102622073B (en) * 2011-01-27 2016-04-20 国家电网公司 Power supply unit circuit breaking protective system
CN102253705A (en) * 2011-08-17 2011-11-23 武汉大学 Super capacitor-based desk computer power supply device
CN103378648A (en) * 2012-04-24 2013-10-30 新巨企业股份有限公司 Uninterruptible power supply device for prolonging power supply time and uninterruptible power supply framework
CN103294155A (en) * 2013-05-28 2013-09-11 李家海 Desktop computer with voltage stabilizing and time delaying function
CN104820486A (en) * 2015-05-01 2015-08-05 柳州市瑞日信息科技有限公司 Computer start circuit capable of preventing parameter missing

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