CN110994973B - Power supply and server - Google Patents
Power supply and server Download PDFInfo
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- CN110994973B CN110994973B CN201911090419.XA CN201911090419A CN110994973B CN 110994973 B CN110994973 B CN 110994973B CN 201911090419 A CN201911090419 A CN 201911090419A CN 110994973 B CN110994973 B CN 110994973B
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- 238000001514 detection method Methods 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 230000004044 response Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 12
- 230000009467 reduction Effects 0.000 description 7
- 238000004590 computer program Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
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Classifications
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- 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
- H02M3/00—Conversion of dc power input into dc power output
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/263—Arrangements for using multiple switchable power supplies, e.g. battery and AC
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
- G06F1/305—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations in the event of power-supply fluctuations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Abstract
The invention provides a power supply and a server, wherein the power supply comprises: first and second power supplies; the input end of the voltage detection chip is connected to the first power supply and the second power supply; the input end of the first voltage conversion circuit is connected to the first output end of the voltage detection chip, and the input end of the second voltage conversion circuit is connected to the second output end of the voltage detection chip; the control end of the first switch chip is connected to a first enabling end of the voltage detection chip, the input end of the first switch chip is connected to the output end of the first voltage changing circuit, the output end of the first switch chip is connected to the power supply end, the control end of the second switch chip is connected to a second enabling end of the voltage detection chip, the input end of the second switch chip is connected to the output end of the second voltage changing circuit, and the output end of the second switch chip is connected to the power supply end, wherein the voltage detection chip enables the first enabling end or the second enabling end according to the voltage value of the power supply to control the first switch chip and the second switch chip to be turned on or turned off. By the invention, stable voltage output can be provided for the board card when the power supply voltage is unstable.
Description
Technical Field
The field relates to the field of computers, and more particularly to a power supply and server.
Background
A server is a high-performance computer that serves as a node of a network, stores and processes 80% of data and information on the network, and is therefore also referred to as a soul of the network. With the development of the internet, servers are becoming more and more indispensable. The requirements on the quality of the products are also increasing.
The server mainboard comprises circuit boards of all electronic products, needs stable power supply during normal work, and can better realize own functions only by the back-end equipment with stable power supply and good performance. If the power supply is unstable, a downtime may occur, the machine needs to be restarted, data is lost, and a board card damage phenomenon may occur if the power supply is not stable, so that a heavy loss is caused.
Most of the existing power supply board cards adopt a 12V redundant power supply to provide 12V direct current input, 48V or 54V cabinet copper bars are also used for supplying power, and the power supply board cards are only suitable for working in laboratories or machine rooms and are not suitable for remote areas or outdoors where the environment is poor and the voltage is not stable enough. And through the mode of POE (power over Ethernet) power supply, the power supply structure is single, can't work under the lower condition of voltage.
Disclosure of Invention
In view of this, an embodiment of the present invention provides a power supply and a server, where the power supply of the present invention can increase a power supply voltage range of a power supply, and can provide a stable voltage output for a board when the power supply voltage is unstable, so as to ensure normal operations of the server and the board.
In view of the above object, an aspect of an embodiment of the present invention provides a power supply including:
first and second power supplies;
a voltage detection chip, an input terminal of which is connected to the first and second power supplies;
the input end of the first voltage conversion circuit is connected to the first output end of the voltage detection chip, and the input end of the second voltage conversion circuit is connected to the second output end of the voltage detection chip;
the control end of the first switch chip is connected to the first enabling end of the voltage detection chip, the input end of the first switch chip is connected to the output end of the first voltage-changing circuit, the output end of the first switch chip is connected to the power supply end, the control end of the second switch chip is connected to the second enabling end of the voltage detection chip, the input end of the second switch chip is connected to the output end of the second voltage-changing circuit, and the output end of the second switch chip is connected to the power supply end,
the voltage detection chip is configured to enable the first enable terminal or the second enable terminal according to a voltage value of the power supply to control the first switch chip and the second switch chip to be turned on or off.
According to one embodiment of the invention, the voltage detection chip is configured to enable the first enable terminal to close the first switch chip in response to detecting that the power supply input voltage is 36 volts to 57 volts.
According to an embodiment of the present invention, the first voltage-converting circuit is a POE voltage-down converting circuit, and the POE voltage-down converting circuit converts the voltage to a 5v voltage.
According to one embodiment of the invention, the voltage detection chip is configured to enable the second enable terminal to close the second switch chip in response to detecting that the power supply input voltage is 6 volts to 36 volts.
According to one embodiment of the invention, the second voltage conversion circuit is a DC buck conversion circuit that converts the voltage to a 5 volt voltage.
According to an embodiment of the invention, the power supply further comprises a UPS, the UPS being connected to the power supply terminal.
According to one embodiment of the invention, the first and second switch chips are single pole double throw switch chips.
According to one embodiment of the invention, an indication mark is further arranged between the first enabling end and the first switch chip.
According to one embodiment of the invention, the voltage detection chip is configured to transmit the power supply power to the first voltage conversion circuit in response to the first enable terminal being enabled, and to transmit the power supply power to the second voltage conversion circuit in response to the second enable terminal being enabled.
In another aspect of the embodiments of the present invention, there is also provided a server including the power supply of any one of the above.
The invention has the following beneficial technical effects: the power supply provided by the embodiment of the invention is provided with a power supply; the input end of the voltage detection chip is connected to the power supply; the input end of the first voltage conversion circuit is connected to the first output end of the voltage detection chip, and the input end of the second voltage conversion circuit is connected to the second output end of the voltage detection chip; the control end of the first switch chip is connected to a first enabling end of the voltage detection chip, the input end of the first switch chip is connected to the output end of the first voltage changing circuit, the output end of the first switch chip is connected to the power supply end, the control end of the second switch chip is connected to a second enabling end of the voltage detection chip, the input end of the second switch chip is connected to the output end of the second voltage changing circuit, and the output end of the second switch chip is connected to the power supply end.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic diagram of a power supply according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
In view of the above object, a first aspect of embodiments of the present invention proposes an embodiment of a power supply. Fig. 1 shows a schematic diagram of the power supply.
As shown in fig. 1, the power supply includes:
the power supply system comprises a first power supply and a second power supply, wherein the first power supply can be a POE power supply port, the second power supply can be a DC power supply port, the POE port is connected with the output end of a switch supporting a PSE (power sourcing equipment) protocol or other PSE power supply equipment, power is supplied through a network cable, the DC power supply port is connected with direct-current voltage input, the DC power supply is used for supplying power under the default condition, when the voltage fluctuation of the DC power supply exceeds the range, the first power supply is closed, the second power supply is started to supply power, and when the first power supply is detected to recover the normal voltage range, the first power supply is started to supply power, and the second power supply is closed;
the input end of the voltage detection chip is connected to the first power supply and the second power supply and is used for detecting the voltage input by the power supplies;
first and second voltage changing circuit, the input of first voltage changing circuit is connected to the first output of voltage detection chip, the input of second voltage changing circuit is connected to the second output of voltage detection chip, when voltage is between 6V to 36V, this first voltage changing circuit can use VR step down chip to accomplish the step down conversion, make output voltage stabilize at 5V, if the voltage is between 36V to 57V, the second voltage changing circuit can use the PSE equipment of following the POE agreement to supply power for the integrated circuit board, step down the circuit through POE, make the voltage stabilization of output at 5V. The voltage of 5V can meet the normal working voltage of almost all on-board equipment, and if the voltage below 5V is needed, the voltage reduction chip can be used for secondary voltage reduction;
first and second switch chips, a control terminal of the first switch chip being connected to a first enable terminal of the voltage detection chip, an input terminal being connected to an output terminal of the first voltage-changing circuit, an output terminal being connected to a power supply terminal, a control terminal of the second switch chip being connected to a second enable terminal of the voltage detection chip, an input terminal being connected to an output terminal of the second voltage-changing circuit, an output terminal being connected to the power supply terminal, wherein,
the voltage detection chip is configured to enable the first enable terminal or the second enable terminal according to a voltage value of the power supply to control the first and second switch chips to be turned on or off.
The first switch chip and the second switch chip are mainly used for selecting which voltage conversion circuit is used according to the output voltage value of the power supply, and the function of circuit switching is achieved. When the voltage detection chip detects that the voltage output by the power supply is between 6 volts and 36 volts, the second enabling terminal is enabled, and the DC buck conversion circuit is connected to the circuit of the power supply. When the voltage detection chip detects that the voltage of the power supply output is between 36 volts and 57 volts, the first enabling end is enabled, and the POE voltage reduction conversion circuit is connected to a circuit of the power supply. The opening or closing of the first and second switch chips is based entirely on the enable signal issued by the voltage detection chip. The first and second switch chips can also play a role in isolation and preventing voltage from flowing backwards.
The invention discloses a power supply with wide voltage range compatible with POE and DC power input, which can support input voltage between 6V and 57V, and can still provide stable output voltage even if the input voltage is unstable, thereby ensuring the normal work of back-end equipment.
Through above technical scheme, can increase the power supply voltage scope of power, can provide stable voltage output for the integrated circuit board when mains voltage is unstable, guarantee the normal work of server and integrated circuit board.
In a preferred embodiment of the present invention, the voltage detection chip is configured to enable the first enable terminal to close the first switch chip in response to detecting that the power supply input voltage is 36 volts to 57 volts.
In a preferred embodiment of the present invention, the first voltage-converting circuit is a POE voltage-down converting circuit, and the POE voltage-down converting circuit converts the voltage to a voltage of 5 volts. When the voltage is 36 volts to 57 volts, the first switch chip is closed, the PSE equipment following the POE protocol can be used for supplying power to the board card, and the voltage output to the output end is stabilized at 5V through the voltage reduction conversion circuit of the POE. The 5V voltage can satisfy almost all board-mounted equipment's normal operating voltage, if need the voltage below 5V, also can carry out the second grade step-down again with step-down chip, for example the output need be camera module, when communication module supplies power.
In a preferred embodiment of the present invention, the voltage detection chip is configured to enable the second enable terminal to close the second switch chip in response to detecting that the power supply input voltage is 6 volts to 36 volts.
In a preferred embodiment of the invention, the second voltage conversion circuit is a DC buck conversion circuit which converts the voltage to a voltage of 5 volts. When the voltage is 6 volts to 36 volts, the second switch chip is closed, the VR voltage reduction conversion chip can be used for completing voltage conversion, the output voltage is stabilized at 5V, the 5V voltage can meet the normal working voltage of almost all onboard equipment, and if the voltage below 5V is needed, the voltage reduction chip can be used for secondary voltage reduction. For example, when the output end needs to be connected to the CPLD, a voltage dropping chip is added to drop the voltage of 5V to 3.3V to supply power to the CPLD.
In a preferred embodiment of the present invention, the power supply further comprises a UPS (uninterruptible power supply), the UPS being connected to the power supply terminal. The UPS is mainly used for supplying power to the output end when the first switch chip and the second switch chip are switched so as to ensure continuous power supply of the output end.
In a preferred embodiment of the invention, the first and second switch chips are single pole double throw switch chips.
In a preferred embodiment of the present invention, an indication mark is further disposed between the first enable terminal and the first switch chip. The indication mark can be an LED lamp, and the LED lamp is turned on when the switch chip is closed, so that a worker is informed of the voltage range of the current power supply output.
In a preferred embodiment of the present invention, the voltage detection chip is configured to transmit the power supply power to the first voltage conversion circuit in response to the first enable terminal being enabled, and to transmit the power supply power to the second voltage conversion circuit in response to the second enable terminal being enabled.
Through above technical scheme, can increase the power supply voltage scope of power, can provide stable voltage output for the integrated circuit board when mains voltage is unstable, guarantee the normal work of server and integrated circuit board.
It should be noted that, as will be understood by those skilled in the art, all or part of the processes in the methods of the above embodiments may be implemented by instructing relevant hardware through a computer program, and the above programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the embodiments of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.
Furthermore, the method disclosed according to an embodiment of the present invention may also be implemented as a computer program executed by a CPU, and the computer program may be stored in a computer-readable storage medium. The computer program, when executed by the CPU, performs the above-described functions defined in the method disclosed in the embodiments of the present invention.
In view of the above object, a second aspect of the embodiments of the present invention proposes a server including the power supply source as described above.
It should be particularly noted that the embodiment of the system described above employs the embodiment of the method described above to specifically describe the working process of each module, and those skilled in the art can easily think that the modules are applied to other embodiments of the method described above.
Further, the above-described method steps and system elements or modules may also be implemented using a controller and a computer-readable storage medium for storing a computer program for causing the controller to implement the functions of the above-described steps or elements or modules.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.
The embodiments described above, particularly any "preferred" embodiments, are possible examples of implementations and are presented merely to clearly understand the principles of the invention. Many variations and modifications may be made to the above-described embodiments without departing from the spirit and principles of the technology described herein. All such modifications are intended to be included within the scope of this disclosure and protected by the following claims.
Claims (10)
1. A power supply, comprising:
the power supply comprises a first power supply and a second power supply, wherein the first power supply is an Ethernet power supply port, the first power supply supplies power through a network cable, the second power supply is a DC power supply port, and the second power supply is connected with a direct-current voltage input;
a voltage detection chip having an input terminal connected to the first and second power sources;
the input end of the first voltage conversion circuit is connected to the first output end of the voltage detection chip, and the input end of the second voltage conversion circuit is connected to the second output end of the voltage detection chip;
first and second switch chips, a control terminal of the first switch chip being connected to a first enable terminal of the voltage detection chip, an input terminal being connected to an output terminal of the first voltage-changing circuit, an output terminal being connected to a power supply terminal, a control terminal of the second switch chip being connected to a second enable terminal of the voltage detection chip, an input terminal being connected to an output terminal of the second voltage-changing circuit, an output terminal being connected to the power supply terminal,
wherein the voltage detection chip is configured to enable the first enable terminal or the second enable terminal according to the voltage values of the first and second power supplies to control the first and second switch chips to be turned on or off.
2. The power supply of claim 1, wherein the voltage detection chip is configured to enable the first enable terminal to close the first switch chip in response to detecting that the input voltage of the first power supply is 36 volts to 57 volts.
3. The power supply of claim 2, wherein the first voltage-converting circuit is a POE voltage-down converting circuit, and the POE voltage-down converting circuit converts the input voltage to a voltage of 5 volts.
4. The power supply of claim 1, wherein the voltage detection chip is configured to enable the second enable terminal to close the second switch chip in response to detecting that the input voltage of the second power supply is 6 volts to 36 volts.
5. The power supply of claim 4, wherein the second voltage conversion circuit is a DC buck conversion circuit that converts the input voltage to a 5 volt voltage.
6. The power supply of claim 1, further comprising a UPS coupled to the power supply.
7. The power supply of claim 1, wherein the first and second switch chips are single pole double throw switch chips.
8. The power supply of claim 1, wherein an indicator mark is further disposed between the first enable terminal and the first switch chip.
9. The power supply of claim 1, wherein the voltage detection chip is configured to transmit power of the first power source to the first voltage conversion circuit in response to the first enable terminal being enabled, and to transmit power of the second power source to the second voltage conversion circuit in response to the second enable terminal being enabled.
10. A server, characterized by comprising a power supply according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911090419.XA CN110994973B (en) | 2019-11-08 | 2019-11-08 | Power supply and server |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911090419.XA CN110994973B (en) | 2019-11-08 | 2019-11-08 | Power supply and server |
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| CN110994973B true CN110994973B (en) | 2021-08-17 |
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| CN114094689B (en) * | 2021-11-16 | 2023-08-08 | 苏州浪潮智能科技有限公司 | Power supply switching circuit and switching method thereof |
| CN115167647B (en) * | 2022-09-05 | 2023-03-24 | 苏州浪潮智能科技有限公司 | Power supply method, system, equipment and medium for server |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608555U (en) * | 2009-11-18 | 2010-10-13 | 太仓市同维电子有限公司 | Automatic switchover circuit of electric power supply |
| CN103023334A (en) * | 2012-11-26 | 2013-04-03 | 北京工业大学 | Multi-redundance aircraft electric power source and starting method thereof |
| CN205489731U (en) * | 2016-01-20 | 2016-08-17 | 马鞍山市示范生产力促进中心有限公司 | Smart phone charger |
| CN206922242U (en) * | 2017-05-15 | 2018-01-23 | 深圳市东升源电气设备有限公司 | The lighting device of ring main unit |
| CN207098741U (en) * | 2017-05-03 | 2018-03-13 | 杭州海康威视数字技术股份有限公司 | A kind of dual power supply switching circuit |
| CN207603936U (en) * | 2017-11-30 | 2018-07-10 | 广州汉邮通信有限公司 | A kind of wireless access point using battery and POE duplicate supplies |
| CN208337230U (en) * | 2018-01-23 | 2019-01-04 | 恒启电子（苏州）有限公司 | A kind of dual power supply switching power supply circuit |
| CN109586569A (en) * | 2018-12-14 | 2019-04-05 | 西安埃克森电源有限公司 | A kind of wide scope input switch power control system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101436786B (en) * | 2007-11-14 | 2011-02-09 | 环旭电子股份有限公司 | Power supply switching device and network appliance |
| JP2011182016A (en) * | 2010-02-26 | 2011-09-15 | Hitachi Kokusai Electric Inc | Image recording apparatus |
| CN201733131U (en) * | 2010-07-20 | 2011-02-02 | 国民技术股份有限公司 | Multiple-feed voltage regulator |
| CN103259325A (en) * | 2012-02-15 | 2013-08-21 | 中兴通讯股份有限公司 | Power supply device and power supply method |
| CN106254232B (en) * | 2016-09-07 | 2019-09-03 | 北京大瞭互通科技有限责任公司 | Digital walkie-talkie gateway |
| CN208862853U (en) * | 2018-10-29 | 2019-05-14 | 广东优力普物联科技有限公司 | A kind of PoE interchanger of non-standard power supply |
-
2019
- 2019-11-08 CN CN201911090419.XA patent/CN110994973B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201608555U (en) * | 2009-11-18 | 2010-10-13 | 太仓市同维电子有限公司 | Automatic switchover circuit of electric power supply |
| CN103023334A (en) * | 2012-11-26 | 2013-04-03 | 北京工业大学 | Multi-redundance aircraft electric power source and starting method thereof |
| CN205489731U (en) * | 2016-01-20 | 2016-08-17 | 马鞍山市示范生产力促进中心有限公司 | Smart phone charger |
| CN207098741U (en) * | 2017-05-03 | 2018-03-13 | 杭州海康威视数字技术股份有限公司 | A kind of dual power supply switching circuit |
| CN206922242U (en) * | 2017-05-15 | 2018-01-23 | 深圳市东升源电气设备有限公司 | The lighting device of ring main unit |
| CN207603936U (en) * | 2017-11-30 | 2018-07-10 | 广州汉邮通信有限公司 | A kind of wireless access point using battery and POE duplicate supplies |
| CN208337230U (en) * | 2018-01-23 | 2019-01-04 | 恒启电子（苏州）有限公司 | A kind of dual power supply switching power supply circuit |
| CN109586569A (en) * | 2018-12-14 | 2019-04-05 | 西安埃克森电源有限公司 | A kind of wide scope input switch power control system |
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