CN106136643B - A kind of desk tops multifunctional low-voltage power supply system - Google Patents
A kind of desk tops multifunctional low-voltage power supply system Download PDFInfo
- Publication number
- CN106136643B CN106136643B CN201610509425.4A CN201610509425A CN106136643B CN 106136643 B CN106136643 B CN 106136643B CN 201610509425 A CN201610509425 A CN 201610509425A CN 106136643 B CN106136643 B CN 106136643B
- Authority
- CN
- China
- Prior art keywords
- voltage
- power supply
- microcontroller
- input
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
Landscapes
- Control Of Voltage And Current In General (AREA)
- Power Sources (AREA)
Abstract
The invention discloses a kind of desk tops multifunctional low-voltage power supply systems, including power supply panel and microcontroller, power supply panel is directly embedded in office table surface, power switch and power supply interface are installed on power supply panel, microcontroller is mounted on power supply back side of panel, lower surface is also equipped with AC-DC conversion module and DC-DC conversion modules, AC-DC conversion module includes Industrial Frequency Transformer, the voltage input end of Industrial Frequency Transformer is connected with anti-leakage plug by conducting wire, and the output end of Industrial Frequency Transformer is connected with rectifier bridge；The feedback port of DC-DC conversion modules is connected with voltage comparator, and the noninverting input of voltage comparator is connected with feedback resistance, and the inverting input of voltage comparator is connected with digital analog converter, and digital analog converter is connected to the I/O mouths of microcontroller；The I/O mouths of microcontroller are also associated with overvoltage crowbar；It is also equipped with liquid crystal touch screen on power supply panel, the present apparatus is simple in structure vdiverse in function, can break away from complicated cable yoke.
Description
Technical field
The present invention relates to indoor power supply technical field, specially a kind of desk tops multifunctional low-voltage power supply system.
Background technology
With the continuous development of power technology and electronic technology, more and more electronic products appear in modern offices
Interior, the supply voltage of all kinds of required by electronic product is different, and the attaching plug used is also not quite similar, causes past on desk
Toward to place multiple and different type wiring boards, all kinds of cables and communication interface are added, the circuit on desk is very mixed and disorderly, difficult
Also inconvenient when arrangement, use, it is susceptible to phenomena such as winding is stumbled, sometimes can also excessively cause to send out because of circuit
Phenomena such as heat or electric leakage, there are all kinds of security risks.
Invention content
In view of the above problems, the present invention provides a kind of desk tops multifunctional low-voltage power supply system, complicated line is broken away from
Cable is tied down, vdiverse in function, while being had the characteristics that safely, conveniently, and the problems in background technology can be effectively solved.
To achieve the above object, the present invention provides the following technical solutions：A kind of desk tops multifunctional low-voltage power supply system,
Including power supply panel and microcontroller, the power supply panel is directly embedded in office table surface, and is equipped with electricity on panel of powering
Source switch and power supply interface, the microcontroller are mounted on power supply back side of panel, and the lower surface of the power supply panel is also equipped with
AC-DC conversion module and DC-DC conversion modules, the AC-DC conversion module include Industrial Frequency Transformer, the Industrial Frequency Transformer
Voltage input end is connected with anti-leakage plug by conducting wire, and the output end of Industrial Frequency Transformer is connected with rectifier bridge；The DC-DC becomes
The feedback port of mold changing block is connected with voltage comparator, and the noninverting input of the voltage comparator is connected with feedback resistance, instead
Feed resistance is connected to the voltage output end of DC-DC conversion modules, and the inverting input of voltage comparator is connected with digital simulation and turns
Parallel operation, digital analog converter are connected to the I/O mouths of microcontroller；The I/O mouths of the microcontroller are also associated with overvoltage protection
Circuit；It is also equipped with liquid crystal touch screen on the power supply panel；
The overvoltage crowbar is made of voltage sampling circuit and relay, and the voltage sampling circuit is by the first sampling
Resistance and the second sampling resistor are composed in series, and the voltage input end of the first sampling resistor is connected to the electricity of over-voltage over-current protection circuit
Output end, the upper end of the second sampling resistor is pressed to be wired to the sample port of microcontroller, the second sampling resistor is another
End ground connection, the relay are connected between power switch and Industrial Frequency Transformer, and the break-make control terminal of relay is connected to micro-control
The control port of device processed.
As a kind of preferred technical solution of the present invention, the microcontroller uses MSP430 series monolithics, different
I/O mouths export different digital voltages according to plug-in, then analog voltage input is converted by digital analog converter
To the inverting input of voltage comparator.
As a kind of preferred technical solution of the present invention, the DC-DC conversion modules are made of LM2596-ADJ chips, altogether
There are five pin, 1 foot is the voltage output end anode that voltage input end is connected to rectifier bridge, and 2 feet are connected with for voltage output end
Proportion resistor, 4 feet are the output end that feedback end is connected to voltage comparator, 3 feet and 5 feet ground connection, and the size of output voltage is equal to 4
The ratio product of the reference voltage and proportion resistor of foot input.
As a kind of preferred technical solution of the present invention, the voltage comparator is made of OP07 amplifiers, output voltage
Size be that the voltage difference of noninverting input and inverting input is multiplied by magnification ratio, the output end of OP07 is also in series with voltage stabilizing
Pipe, the anode of voltage-stabiliser tube are connected to the feedback end of DC-DC conversion modules.
As a kind of preferred technical solution of the present invention, the coupled ratio of the Industrial Frequency Transformer is 10:1, output end
The DC voltage size of rectifier bridge output be 22V, the output end of rectifier bridge is parallel with multiple DC-DC conversion modules, each DC-
The output voltage of DC conversion modules is controlled by microcontroller.
As a kind of preferred technical solution of the present invention, the power supply interface includes that common Three-hole socket, common holes are inserted
Seat and USB voltage interfaces, the common Three-hole socket and the corresponding DC-DC conversion modules output voltage of common two spring hole scoket are
The output voltage of the corresponding DC-DC conversion modules of 12/24V, USB voltage interface is that 3.1V-20V is adjustable.
As a kind of preferred technical solution of the present invention, the electrical signal of the liquid crystal touch screen is connected with modulus and turns
Parallel operation, the electric signal that liquid crystal touch screen exports is converted into digital signal by the analog-digital converter, and digital signal is input to
The data collection terminal mouth of microcontroller.
As a kind of preferred technical solution of the present invention, it is also equipped with RJ45 interfaces on the power supply panel and HDMI connects
Mouthful, the other end of RJ45 interfaces is connected with cable, may be coupled directly on router, and the other end of HDMI interface is connected with transmission
Line may be connected on computer.
Compared with prior art, the beneficial effects of the invention are as follows：The desk tops multifunctional low-voltage power supply system, by setting
Microcontroller and voltage comparator are set, fixed reference voltage is transformed into the reference voltage of digital controllable, in conjunction with LCD touch
Screen conveniently realizes voltage conversion, convenient and simple to adapt to different voltage requests；By the way that overvoltage crowbar, profit is arranged
Overvoltage protection is realized with voltage sampling circuit and relay, improves safety and stability performance；The present apparatus is simple in structure, vdiverse in function,
Complicated cable yoke can be broken away from, while having the characteristics that safely, conveniently, to be suitable for various working and studying places and use.
Description of the drawings
Fig. 1 is electrical block diagram of the present invention；
Fig. 2 is cross-sectional view of the present invention；
Fig. 3 is DC-DC conversion module circuit diagrams.
In figure：1- power supply panels；2- microcontrollers；3- power switches；4- power supply interfaces；5-AC-DC conversion modules；6- works
Frequency power transformer；7- anti-leakage plugs；8- rectifier bridges；9-DC-DC conversion modules；10- voltage comparators；11- digital-to-analogue conversions
Device；12- feedback resistances；13- overvoltage crowbars；The common Three-hole sockets of 14-；Common two spring hole scokets of 15-；16-USB voltages connect
Mouthful；17- liquid crystal touch screens；18- analog-digital converters；19-RJ45 interfaces；20-HDMI interfaces；21- voltage sampling circuits, 22- after
Electric appliance.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment：
It please refers to Fig.1 to Fig.3, the present invention provides a kind of technical solution：A kind of desk tops multifunctional low-voltage power supply system,
Including power supply panel 1 and microcontroller 2, the power supply panel 1 is directly embedded in office table surface, and is installed on panel 1 of powering
There are power switch 3 and power supply interface 4, the microcontroller 2 to be mounted on 1 back side of power supply panel, the lower surface of the power supply panel 1
It is also equipped with AC-DC conversion module 5 and DC-DC conversion modules 9, the AC-DC conversion module 5 includes Industrial Frequency Transformer 6, described
The voltage input end of Industrial Frequency Transformer 6 is connected with anti-leakage plug 7 by conducting wire, and the output end of Industrial Frequency Transformer 6 is connected with whole
Flow bridge 8；The feedback port of the DC-DC conversion modules 9 is connected with voltage comparator 10, the voltage comparator 10 it is in the same direction defeated
Enter end and be connected with feedback resistance 12, feedback resistance is connected to the voltage output end of DC-DC conversion modules 9, voltage comparator 10
Inverting input is connected with digital analog converter 11, and digital analog converter 11 is connected to the I/O mouths of microcontroller 2；It is described
The I/O mouths of microcontroller 2 are also associated with overvoltage crowbar 13；It is also equipped with liquid crystal touch screen 17 on the power supply panel 1；Institute
Stating microcontroller 2 uses MSP430 series monolithics, different I/O mouths to export different digital voltages according to plug-in,
Analog voltage is converted by digital analog converter 11 again and is input to the reverse phase of voltage comparator 10 to input terminal；The DC-
DC conversion modules 9 are made of LM2596-ADJ chips, and altogether there are five pin, 1 foot is the electricity that voltage input end is connected to rectifier bridge 8
It is that voltage output end is connected with proportion resistor to press output head anode, 2 feet, and 4 feet are that feedback end is connected to the defeated of voltage comparator 10
Outlet, 3 feet and 5 feet ground connection, the size of output voltage are equal to the ratio product of the reference voltage and proportion resistor of the input of 4 feet；Institute
It states voltage comparator 10 to be made of OP07 amplifiers, the size of output voltage is the voltage difference of noninverting input and inverting input
It is multiplied by magnification ratio, the output end of OP07 is also in series with voltage-stabiliser tube, and the anode of voltage-stabiliser tube is connected to the anti-of DC-DC conversion modules 9
Present end；The coupled ratio of the Industrial Frequency Transformer 6 is 10:1, the DC voltage size that the rectifier bridge 8 of output end exports is
The output end of 22V, rectifier bridge 8 are parallel with multiple DC-DC conversion modules 9, and the output voltage of each DC-DC conversion modules 9 is by micro-
Controller 2 controls；The power supply interface 4 includes common Three-hole socket 14, common two spring hole scoket 15 and USB voltage interfaces 16, institute
It is 12/24V, USB voltages to state common Three-hole socket 14 and 15 corresponding 9 output voltage of DC-DC conversion modules of common two spring hole scoket
The output voltage of 16 corresponding DC-DC conversion modules 9 of interface is that 3.1V-20V is adjustable；The electric signal of the liquid crystal touch screen 17 is defeated
Outlet is connected with analog-digital converter 18, and the electric signal that liquid crystal touch screen 17 exports is converted into digital letter by the analog-digital converter 18
Number, and digital signal is input to the data collection terminal mouth of microcontroller 2；It is also equipped with RJ45 interfaces on the power supply panel 1
19 and HDMI interface 20, the other end of RJ45 interfaces 19 be connected with cable, may be coupled directly on computer or router, HDMI
The other end of interface 20 is connected with transmission line, may be connected on computer；The overvoltage crowbar 13 is by voltage sampling circuit
21 and relay 22 form, the voltage sampling circuit 21 is composed in series by the first sampling resistor and the second sampling resistor, first
The voltage input end of sampling resistor is connected to the voltage output end of over-voltage over-current protection circuit 13, and the upper end of the second sampling resistor is logical
The sample port that conducting wire is connected to microcontroller 2, second sampling resistor other end ground connection are crossed, the relay 22 is connected to power supply
Between switch 3 and Industrial Frequency Transformer 6, the break-make control terminal of relay 22 is connected to the control port of microcontroller 2.
The operation principle of the present invention：Power supply interface 4, RJ45 interfaces 19 and HDMI interface 20 are installed on the relay,
Wherein power supply interface 4 includes 16 three types socket of common Three-hole socket 14, common two spring hole scoket 15 and USB voltage interfaces, can
It is powered respectively to laptop, pressure common electrical appliance and mobile phone Pad etc., the RJ45 interfaces 19 can be used for count
Calculation machine is connected to router, and video equipment can be connected on computer by the HDMI interface 20；When user is by leakproof electric mortiser
First 7 are connected to mains ac power supply, and after pressing power switch 3, and device can start to work normally；User can pass through liquid crystal
The electric signal that liquid crystal touch screen 17 exports is converted into digital letter by the output voltage that the selection of touch screen 17 needs, analog-digital converter 18
Number, microcontroller 2 reads in data from acquisition port, is then led to from the corresponding voltage of I/O mouthfuls of outputs according to inner setting program
It crosses digital analog converter 11 and is converted into analog voltage, be input to the reverse phase of voltage comparator 10 to input terminal, the feedback is electric
Resistance 12 from the output end of DC-DC conversion modules 9 draw feedback voltage to voltage comparator 10 in-phase input end, by same phase and
The amplification of reverse voltage difference generates reference voltage, the i.e. changeable reference voltage of the output voltage by changing microcontroller 2, to control
Make the output voltage of entire DC-DC conversion modules 9；The overvoltage crowbar 13 acquires output end by voltage sampling circuit 21
Voltage, between being limited in 0-5V due to the input voltage range of microcontroller, so electricity will be exported by first passing through voltage sampling circuit 21
Pressure is transformed into the input voltage allowable range of microcontroller 2, and microcontroller 2 sets collected voltage value and internal processes
Value is compared, and when beyond setting value, high level will be exported by being connected to the port of 22 control terminal of relay, make relay 22 from
Normally open jumps to normal off state, deenergization, protective device safety.
The desk tops multifunctional low-voltage power supply system will be fixed by the way that microcontroller 2 and voltage comparator 10 is arranged
Reference voltage is transformed into the reference voltage of digital controllable, voltage conversion is conveniently realized in conjunction with liquid crystal touch screen 17, to adapt to
Different voltage requests, it is convenient and simple；It is real using voltage sampling circuit 21 and relay 22 by the way that overvoltage crowbar 13 is arranged
Existing overvoltage protection, improves safety and stability performance；The present apparatus is simple in structure, vdiverse in function, can break away from complicated cable yoke, simultaneously
Have the characteristics that safely, conveniently, to be suitable for various working and studying places and use.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (8)
1. a kind of desk tops multifunctional low-voltage power supply system, including power supply panel (1) and microcontroller (2), the power supply face
Plate (1) is directly embedded in office table surface, and is equipped with power switch (3) and power supply interface (4) on panel (1) of powering, described
Microcontroller (2) is mounted on power supply panel (1) back side, it is characterised in that：The lower surface of the power supply panel (1) is also equipped with
AC-DC conversion module (5) and DC-DC conversion modules (9), the AC-DC conversion module (5) includes Industrial Frequency Transformer (6), described
The voltage input end of Industrial Frequency Transformer (6) is connected with anti-leakage plug (7) by conducting wire, and the output end of Industrial Frequency Transformer (6) connects
It is connected to rectifier bridge (8)；The feedback port of the DC-DC conversion modules (9) is connected with voltage comparator (10), and the voltage compares
The noninverting input of device (10) is connected with feedback resistance (12), and feedback resistance is connected to the voltage output of DC-DC conversion modules (9)
The inverting input at end, voltage comparator (10) is connected with digital analog converter (11), digital analog converter (11) connection
To the I/O mouths of microcontroller (2)；The I/O mouths of the microcontroller (2) are also associated with overvoltage crowbar (13)；The power supply
Liquid crystal touch screen (17) is also equipped on panel (1)；
The overvoltage crowbar (13) is made of voltage sampling circuit (21) and relay (22), the voltage sampling circuit
(21) it is composed in series by the first sampling resistor and the second sampling resistor, the voltage input end of the first sampling resistor, which was connected to, to be pressed through
The voltage output end of stream protection circuit (13), the upper end of the second sampling resistor is wired to the sampling of microcontroller (2)
Port, second sampling resistor other end ground connection, the relay (22) be connected to power switch (3) and Industrial Frequency Transformer (6) it
Between, the break-make control terminal of relay (22) is connected to the control port of microcontroller (2).
2. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The microcontroller
Device (2) uses MSP430 series monolithics, and different I/O mouths export different digital voltages according to plug-in, then pass through
Digital analog converter (11) is converted into analog voltage and is input to the reverse phase of voltage comparator (10) to input terminal.
3. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The DC-DC
Conversion module (9) is made of LM2596-ADJ chips, and altogether there are five pin, 1 foot is that voltage input end is connected to rectifier bridge (8)
Voltage output end anode, 2 feet are that voltage output end is connected with proportion resistor, and 4 feet are that feedback end is connected to voltage comparator (10)
Output end, 3 feet and 5 feet ground connection, the size of output voltage is equal to the reference voltage of 4 feet input and the ratio of proportion resistor multiplies
Product.
4. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The voltage ratio
It is made of OP07 amplifiers compared with device (10), the size of output voltage is multiplied by for the voltage difference of noninverting input and inverting input puts
The output end of large scale, OP07 is also in series with voltage-stabiliser tube, and the anode of voltage-stabiliser tube is connected to the feedback end of DC-DC conversion modules (9).
5. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The power frequency becomes
The coupled ratio of depressor (6) is 10:1, the DC voltage size of rectifier bridge (8) output of output end is 22V, rectifier bridge (8)
Output end can be parallel with multiple DC-DC conversion modules (9), the output voltage of each DC-DC conversion modules (9) is by microcontroller
(2) it controls.
6. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The power supply connects
Mouth (4) includes common Three-hole socket (14), common two spring hole scoket (15) and USB voltage interfaces (16), the common Three-hole socket
(14) and corresponding DC-DC conversion modules (9) output voltage of common two spring hole scoket (15) is 12/24V, USB voltage interfaces (16)
The output voltage of corresponding DC-DC conversion modules (9) is that 3.1V-20V is adjustable.
7. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The liquid crystal touches
The electrical signal for touching screen (17) is connected with analog-digital converter (18), and the analog-digital converter (18) is by liquid crystal touch screen (17)
The electric signal of output is converted into digital signal, and digital signal is input to the data collection terminal mouth of microcontroller (2).
8. a kind of desk tops multifunctional low-voltage power supply system according to claim 1, it is characterised in that：The power supply face
RJ45 interfaces (19) and HDMI interface (20) are also equipped on plate (1), the other end of RJ45 interfaces (19) is connected with cable, can be straight
It is connected on router in succession, the other end of HDMI interface (20) is connected with transmission line, may be connected on computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509425.4A CN106136643B (en) | 2016-07-01 | 2016-07-01 | A kind of desk tops multifunctional low-voltage power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610509425.4A CN106136643B (en) | 2016-07-01 | 2016-07-01 | A kind of desk tops multifunctional low-voltage power supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106136643A CN106136643A (en) | 2016-11-23 |
| CN106136643B true CN106136643B (en) | 2018-11-06 |
Family
ID=57350764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610509425.4A Active CN106136643B (en) | 2016-07-01 | 2016-07-01 | A kind of desk tops multifunctional low-voltage power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106136643B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118455Y (en) * | 2007-08-27 | 2008-09-17 | 黄挺 | A power adapter for adjustable output voltage |
| CN202363699U (en) * | 2011-12-12 | 2012-08-01 | 东华大学 | Digital power plugboard |
| CN202652084U (en) * | 2012-03-21 | 2013-01-02 | 深圳市福佳电器有限公司 | Switch-power-supply digital-display voltage-adjustable controller |
| CN104362468B (en) * | 2014-10-29 | 2016-08-24 | 深圳市领芯者科技有限公司 | Supply socket supervising device and supply socket |
| CN204556811U (en) * | 2015-05-14 | 2015-08-12 | 哈尔滨冠拓电源设备有限公司 | The shunt signal simulator that a kind of USB of support powers |
-
2016
- 2016-07-01 CN CN201610509425.4A patent/CN106136643B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106136643A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201765692U (en) | General meter-reading controller for carrier wave electric energy meter | |
| CN101552541B (en) | Universal power adapter | |
| CN106136643B (en) | A kind of desk tops multifunctional low-voltage power supply system | |
| CN206596278U (en) | A kind of intelligent radio signal light control panel | |
| CN204577765U (en) | A kind of long plug socket with wireless routing function | |
| CN103454508A (en) | Four-channel overcurrent and overvoltage protecting tester | |
| CN202019100U (en) | Easily assembled and disassembled power switch socket | |
| CN202282534U (en) | Improved power socket board | |
| CN202058989U (en) | Energy saving socket | |
| CN212781729U (en) | Power controller of marking machine | |
| CN202679248U (en) | Power supply adapter | |
| CN209590180U (en) | A kind of electronic transformer test device | |
| CN107748516A (en) | A kind of novel communication control interface module | |
| CN209748426U (en) | Multi-path direct current output device | |
| CN201327918Y (en) | Duel-voltage two-purpose power socket | |
| CN201118455Y (en) | A power adapter for adjustable output voltage | |
| CN201039011Y (en) | All-purpose power adapter | |
| CN209056923U (en) | Switching power circuit | |
| CN207098205U (en) | A kind of Multifunctional concentrator | |
| CN207650589U (en) | A kind of novel communication control interface module | |
| CN205753338U (en) | A kind of Novel intelligent current-limiting protection device | |
| CN206893931U (en) | A kind of wiring board of intelligently connecting or disconnecting | |
| CN207691775U (en) | A kind of low power consumption switch controller | |
| CN204652013U (en) | The board-like power supply changeover device of plug wire and USB charging module thereof | |
| CN203932732U (en) | Current monitoring hardware unit based on miniature circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180921 Address after: 236000 No. 99, seventeen State Road, Yingzhou Economic Development Zone, Fuyang, Anhui Applicant after: Anhui Qiantong Educational Equipment Manufacturing Co. Ltd. Address before: 241000 Anhui Wuhu high tech Industrial Development Zone, Service Outsourcing Industrial Park 4, 15, 1502 Applicant before: WUHU BAOPING INTELLIGENT SERVICE OUTSOURCING CO., LTD. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Multifunctional low-voltage power supply system for office table top Effective date of registration: 20190916 Granted publication date: 20181106 Pledgee: Fuyang Yinghuai Rural Commercial Bank Co., Ltd. Pledgor: Anhui Qiantong Educational Equipment Manufacturing Co. Ltd. Registration number: Y2019340000063 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |