CN208209616U - A kind of power supply adaptor, terminal device and electronic equipment - Google Patents
A kind of power supply adaptor, terminal device and electronic equipment Download PDFInfo
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- CN208209616U CN208209616U CN201820489884.5U CN201820489884U CN208209616U CN 208209616 U CN208209616 U CN 208209616U CN 201820489884 U CN201820489884 U CN 201820489884U CN 208209616 U CN208209616 U CN 208209616U
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Abstract
The utility model discloses a kind of power supply adaptors, comprising: power input, control signal output, the first output end, second output terminal, the first power supply control chip, capacitive energy storage module and Schottky diode；The first end of first power supply control chip is connect with power input, and the second end of the first power supply control chip is connect with control signal output, and the third end of the first power supply control chip is connect with second output terminal；The first end of capacitive energy storage module is connect with the first output end, and capacitive energy storage module second end is connect with second output terminal；The anode of Schottky diode is connect with the second end of the first power supply control chip, and the cathode of Schottky diode is connect with the first output end.The invention also discloses a kind of terminal device and a kind of electronic equipment.The utility model can be when occurring power down, and the capacitor of adapter inner continues as the equipment connecting with power supply adaptor power supply, and to cause the device to complete the transmission of Dying Gasp signal, at low cost, versatility is high.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a power adapter, terminal equipment and electronic equipment.
Background
The Dying gasp signal is a signal that when the system input voltage cannot meet the requirement of normal operation of the system, the system automatically sends a signal to the central office end to tell the central office end that the system may not operate normally. With the continuous development and progress of electronic products, various related technologies also have great breakthrough, and after a GFAST (ultra-high-speed digital subscriber line technology) product adopts a reverse power supply technology, a GFAST local side is required to pay more attention than a traditional XDSL (digital subscriber line) local side in the aspects of energy saving and bandwidth resource saving, so that the Dying Gasp function is more important for the GFAST product. In the prior art, after power failure occurs, the GFAST device continues to supply power for the device for a short time through an energy storage capacitor carried by the GFAST device, so that a CPU (central processing unit) in the device can complete sending of a Dying Gasp signal. However, the GFAST self energy storage capacitor occupies the space of the GFAST, the cost is high, the requirement for completing the sending of the Dying Gasp signal can only be suitable for the user digital line with the capacitor, and the universality is not strong.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a power adapter, terminal equipment and electronic equipment can be when the emergence falls the electric condition, and the inside electric capacity of power adapter continues to be the equipment power supply of being connected with power adapter to make equipment can accomplish Dying Gasp signal's transmission, practice thrift cost and commonality height.
To achieve the above object, an embodiment of the present invention provides a power adapter, including: the power supply comprises a power supply input end, a control signal output end, a first output end, a second output end, a first power supply control chip, a capacitive energy storage module and a Schottky diode; wherein,
the first end of the first power supply control chip is connected with the power supply input end, the second end of the first power supply control chip is connected with the control signal output end, and the third end of the first power supply control chip is connected with the second output end;
the first end of the capacitive energy storage module is connected with the first output end, and the second end of the capacitive energy storage module is connected with the second output end;
the positive pole of the Schottky diode is connected with the second end of the first power supply control chip, and the negative pole of the Schottky diode is connected with the first output end.
Compared with the prior art, the embodiment of the utility model discloses a power adapter passes through control signal output is when the electricity falls, exports low level signal, passes through simultaneously electric capacity energy storage module be for with the equipment that power adapter connects continues short duration power supply to make equipment receive accomplish the sending of Dying Gasp signal during low level signal. The problem of among the prior art continue the short time power supply through the energy storage capacitor that user data line self carried after plug power adapter, can occupy the space of user data line, cause the increase of cost and commonality not high is solved. When the power failure occurs, the capacitor in the power adapter can continuously supply power to the equipment connected with the power adapter, so that the equipment can finish sending the DyingGasp signals, and the power adapter is low in cost and high in universality.
As an improvement of the above scheme, the capacitive energy storage module includes a first capacitor and a second capacitor, a first end of the first capacitor is connected to the first output end, a second end of the first capacitor is grounded, and the second end of the first capacitor is further connected to the second output end; the first end of the second capacitor is connected with the first output end, the second end of the second capacitor is grounded, and the second end of the second capacitor is also connected with the second output end.
As an improvement of the above scheme, the first capacitor is a polar capacitor; the second capacitor is a polar capacitor.
In an improvement of the above scheme, the power adapter is adapted to be connected to a terminal device, the terminal device includes a central processing unit, and the control signal output terminal is used for being connected to the central processing unit.
As an improvement of the above scheme, the power adapter is adapted to connect to a terminal device, the terminal device includes a second power control chip, and the control signal output terminal is further configured to connect to the second power control chip.
As an improvement of the scheme, the first power supply control chip is an AC-DC power supply chip.
In order to achieve the above object, the embodiment of the present invention further provides a terminal device, including: the power supply comprises a control signal input end, an enable signal output end, a second power supply control chip, a central processing unit, a first resistor, a second resistor, a third resistor and a fourth resistor; wherein,
the first end of the first resistor is grounded, the second end of the first resistor is connected with the first end of the second power supply control chip, and the second end of the second power supply control chip is connected with the enable signal output end;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the control signal input end;
the first end of the third resistor is connected with the control signal input end, and the second end of the third resistor is connected with the central processing unit;
the first end of the fourth resistor is connected with the second end of the third resistor, the first end of the fourth resistor is further connected with the central processing unit, and the second end of the fourth resistor is grounded.
Compared with the prior art, the utility model discloses terminal equipment is applicable to above-mentioned embodiment power adapter, when the electricity falls in the emergence, power adapter output low level signal passes through simultaneously electric capacity energy storage module be with terminal equipment continues short duration power supply, central processing unit is receiving accomplish the sending of DyingGasp signal during low level signal, in addition second power control chip is receiving the power supply function of unnecessary module is closed during low level signal. The problem of among the prior art continue the short time power supply through the energy storage capacitor that user data line self carried after plug power adapter, can occupy the space of user data line, cause the increase of cost and commonality not high is solved. When the power failure occurs, the capacitor in the power adapter can continuously supply power to the equipment connected with the power adapter, so that the equipment can finish sending of Dying Gasp signals, the cost is low, and the universality is high.
As an improvement of the above scheme, the second power supply control chip is a DC-DC power supply chip.
As a modification of the above scheme, the terminal device is an XDSL device or a GFAST device.
In order to achieve the above object, an embodiment of the present invention further provides an electronic device, including the power adapter described in any of the above embodiments and the terminal device described in any of the above embodiments; wherein,
and the control signal output end in the power adapter is connected with the control signal input end in the terminal equipment.
Drawings
Fig. 1 is a block diagram of a power adapter according to an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a power adapter according to an embodiment of the present invention;
fig. 3 is a circuit structure diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
Referring to fig. 1, fig. 1 is a block diagram of a power adapter according to an embodiment of the present invention; the method comprises the following steps: the power supply circuit comprises a power supply input end IN1, a control signal output end Ctrl, a first output end OUT1, a second output end OUT2, a first power supply control chip 1, a capacitive energy storage module 2 and a Schottky diode D; wherein,
the first end 11 of the first power control chip 1 is connected to the power input end IN1, the second end 12 of the first power control chip 1 is connected to the control signal output end Ctrl, and the third end 13 of the first power control chip 1 is connected to the second output end OUT 2;
the first end 21 of the capacitive energy storage module 2 is connected with the first output end OUT1, and the second end 22 of the capacitive energy storage module 2 is connected with the second output end OUT 2;
the anode of the schottky diode D is connected to the second end 12 of the first power control chip 1, and the cathode of the schottky diode D is connected to the first output end OUT 1.
Preferably, the power adapter is adapted to connect to a terminal device, the terminal device includes a central processing unit and a second power control chip, the control signal output terminal Ctrl is used to connect to a GPIO (general purpose input/output) detection pin of the central processing unit, and the control signal output terminal Ctrl is also used to connect to an enable pin of the second power control chip.
Preferably, the terminal equipment is XDSL (digital subscriber line) equipment or GFAST (ultra high speed digital subscriber line technology) equipment.
Generally, the second power control chip is a DC-DC (direct current-direct current) power chip for connecting unnecessary modules in the terminal device to enable the unnecessary modules to operate normally, and preferably, the unnecessary modules are modules that are not needed when the central processing unit sends a Dying gasp signal in case of power failure, such as WiFi (wireless communication) or USB (universal serial bus) modules.
The control signal output end Ctrl is connected to a GPIO detection pin of the central processing unit and also connected to an enable pin of a second power control chip to directly control DC enabling of the unnecessary module, and when a power failure occurs, the enable pin receives the low level signal, the second power control chip stops working, and at this time, the unnecessary module stops working, and the central processing unit is not required to turn off the unnecessary module through the GPIO detection pin, and energy is also lost because of turning off by the central processing unit, so that electric energy can be saved.
Specifically, the power adapter provides electric energy for the terminal device, and preferably, the terminal device may be a mobile phone, a tablet, a computer, or other terminal device. When the power failure condition does not occur, the power adapter is connected with external power supply equipment through the power input end connection IN1, at the moment, the control signal output by the control signal output end Ctrl is a high-level signal, the capacitor energy storage module 2 starts to store electric energy, and the power adapter outputs the electric energy to the terminal equipment through the first output end OUT1 and the second output end OUT2, so that the terminal equipment works normally.
When a power failure occurs, the connection between the power adapter and the external power supply device is interrupted, at this time, the power input end is connected with the IN1 to stop inputting electric energy, the control signal of the control signal output end Ctrl is changed from a high level signal to a low level signal, the capacitive energy storage module 2 releases the electric energy stored before the power failure, and the electric energy can be continuously output to the terminal device through the first output end OUT1 and the second output end OUT2, so that the terminal device completes the sending of the Dying Gasp signal when receiving the low level signal.
Preferably, referring to fig. 2, fig. 2 is a circuit structure diagram of a power adapter according to an embodiment of the present invention; the capacitive energy storage module 2 comprises a first capacitor C1 and a second capacitor C2, a first end of the first capacitor C1 is connected with the first output end OUT1, a second end of the first capacitor C1 is connected with ground, and a second end of the first capacitor C1 is further connected with the second output end OUT 2; the first terminal of the second capacitor C2 is connected to the first output terminal OUT1, the second terminal of the second capacitor C2 is grounded, and the second terminal of the second capacitor C2 is further connected to the second output terminal OUT 2.
Preferably, the first capacitor C1 is a polar capacitor, the first end of the first capacitor C1 is a positive electrode, the second end of the first capacitor C1 is a negative electrode, and the capacitance value of the first capacitor C1 may be 470uF or 1000uF or higher. Preferably, the second capacitor C2 is a polar capacitor, the first terminal of the second capacitor C2 is a positive terminal, the second terminal of the second capacitor C2 is a negative terminal, and the capacitance value of the second capacitor C2 may be 470uF or 1000uF or higher.
Preferably, the capacitive energy storage module 2 further comprises a third capacitor C3; the first terminal of the third capacitor C3 is connected to the first output terminal OUT1, the second terminal of the third capacitor C3 is connected to ground, and the second terminal of the third capacitor C3 is further connected to the second output terminal OUT 2.
Specifically, the first capacitor C1, the second capacitor C2 and the third capacitor C3 are used for storing electric energy, a storage battery or other energy storage equipment is not additionally arranged in the power adapter, the space of the power adapter is saved, moreover, the capacitor in the power adapter is used for realizing the function of supplying power to the central processing unit 3 for a short time when power failure occurs, so that the terminal equipment does not need to be provided with an energy storage capacitor with a large size, the area of a PCB can be reduced, and the miniaturization design of products is facilitated. In addition, the first capacitor C1, the second capacitor C2 and the third capacitor C3 are used for storing energy, and the high-current high-voltage charging circuit has the characteristics of high charging speed and good high-current discharging performance.
Specifically, when the power input terminal is connected to the IN1 input voltage, the schottky diode D is turned on IN the forward direction, and at this time, the schottky diode D separates the control signal output terminal Ctrl from the first output terminal OUT 1. When the power adapter is powered down, because of the unidirectional conduction characteristic of the schottky diode D, the charges in the energy storage module 2 cannot reversely flow into the control signal output terminal Ctrl, the control signal of the control signal output terminal Ctrl becomes a low-level signal, and the charges in the energy storage module 2 can flow into the first output terminal OUT1, so that the power adapter can continue to supply power to the terminal device for a short time.
Preferably, the first power control chip 1 is an AC-DC (alternating current-direct current) power chip. Preferably, the power input end is connected with IN1 and can be connected with a mains supply (alternating current voltage) of 100-240V, the first power control chip 1 converts the mains supply into a direct current voltage, the first power control chip 1 can adopt a three-phase six-tube rectification mode, the function of adjustable input power factor can be realized, good dynamic performance is achieved, the voltage and the current of the power adapter are IN the same frequency and phase, and the harmonic wave of the power adapter is reduced.
In specific implementation, when power failure occurs, a low level signal is output through the control signal output end Ctrl of the power adapter, and meanwhile, power is supplied to equipment connected with the power adapter for a short time through the capacitive energy storage module 2, so that the equipment completes sending of a Dying Gasp signal when receiving the low level signal.
Compared with the prior art, the embodiment of the utility model discloses a power adapter has solved among the prior art and has continued the short-time power supply through the energy storage electric capacity that user data line self carried behind plug power adapter, can occupy the space of user data line, causes the increase of cost and the not high problem of commonality. When the power failure occurs, the capacitor in the power adapter continuously supplies power to the equipment connected with the adapter, so that the equipment can finish sending the Dying Gasp signals, the cost is low, and the universality is high.
Example two
Referring to fig. 3, fig. 3 is a circuit structure diagram of a terminal device according to an embodiment of the present invention; the method comprises the following steps: the control circuit comprises a control signal input end IN2, an enable signal output end OUT3, a second power control chip 3, a central processing unit 4, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4; wherein,
a first end of the first resistor R1 is grounded, a second end of the first resistor R1 is connected to the first end 31 of the second power control chip 3, and the second end 32 of the second power control chip 3 is connected to the enable signal output end OUT 3;
a first end of the second resistor R2 is connected to a second end of the first resistor R1, and a second end of the second resistor R2 is connected to the control signal input IN 2;
a first end of the third resistor R3 is connected to the control signal input terminal IN2, and a second end of the third resistor R3 is connected to the cpu 4;
the first end of the fourth resistor R4 is connected to the second end of the third resistor R3, the first end of the fourth resistor R4 is further connected to the cpu 4, and the second end of the fourth resistor R4 is grounded.
Preferably, the terminal device is adapted to be connected to a power supply through the power adapter described in the first embodiment, and the second power control chip 3 is a DC-DC (direct current-direct current) power chip. The terminal equipment is XDSL (digital subscriber line) equipment or GFAST (ultra-high speed user digital line technology) equipment.
Specifically, the power adapter provides electric energy for the terminal device, and preferably, the terminal device may be a mobile phone, a tablet, a computer, or other terminal device. When the power failure condition does not occur, the power adapter inputs a high level signal to the terminal equipment through the control signal input end IN2, and the power adapter outputs electric energy to the terminal equipment through the first output end OUT1 and the second output end OUT2, so that the terminal equipment works normally.
When the power failure occurs, the connection between the power adapter and the external power supply device is interrupted, at this time, the control signal of the control signal input end IN2 is changed from a high level signal to a low level signal, the capacitive energy storage module 2 releases the electric energy stored before the power failure, and the electric energy can be continuously output to the terminal device through the first output end OUT1 and the second output end OUT2, so that the terminal device can work temporarily. Preferably, the control signal input terminal IN2 is connected to a GPIO (general purpose input/output) detection pin of the central processing unit 4, and at this time, the GPIO detection pin of the central processing unit 4 detects the low level signal, and the central processing unit 4 can know that power down has occurred, and can complete sending of the Dying gasp signal IN time.
Preferably, the control signal input terminal IN2 is connected to an enable pin of the second power control chip 3, the enable signal output terminal OUT3 is connected to a non-essential module IN the terminal device, and the power is output to the non-essential module through the enable signal output terminal OUT3, so that the non-essential module operates normally, and the non-essential module is preferably a module that is not required for the cpu 4 to send a Dying gasp signal when a power-down condition occurs, such as a WiFi (wireless communication) or USB (universal serial bus) module. When the enable pin receives the low level signal, the second power control chip 3 stops working, and at this time, the unnecessary module stops working, and the central processing unit 4 is not required to close the unnecessary module through a GPIO detection pin, and energy is also lost when the central processing unit 4 is closed, so that electric energy can be saved.
Preferably, the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are voltage dividing resistors, and since the output voltage of the power adapter is too high, the output voltage needs to be divided and then input into the second power control chip 3 and the central processing unit 4, so that the second power control chip 3 and the central processing unit 4 can be prevented from being burned out due to high voltage.
In specific implementation, the power adapter outputs a low level signal when power failure occurs, meanwhile, power is supplied to the terminal equipment for a short time through the capacitive energy storage module 2, the central processing unit 4 completes sending of a Dying Gasp signal when receiving the low level signal, and in addition, the second power control chip 3 closes the power supply function of unnecessary modules when receiving the low level signal, so that electric energy is saved.
Compared with the prior art, the embodiment of the utility model discloses a terminal equipment has solved among the prior art and has continued the power supply of short duration through the energy storage electric capacity that user data line self carried behind plug power adapter, can occupy the space of user data line, causes the increase of cost and the not high problem of commonality. When the power failure occurs, the capacitor in the power adapter continuously supplies power to the equipment connected with the adapter, so that the equipment can finish sending the Dying Gasp signals, the cost is low, and the universality is high.
EXAMPLE III
The third embodiment of the present invention further provides an electronic device, referring to fig. 1 to 3, wherein the electronic device includes the power adapter according to the second embodiment and the terminal device according to the second embodiment; wherein,
the control signal output terminal Ctrl IN the power adapter is connected to the control signal input terminal IN2 IN the terminal device.
Specifically, the power adapter provides electric energy for the terminal device, and preferably, the terminal device may be a mobile phone, a tablet, a computer, or other terminal device. When the power failure condition does not occur, the power adapter inputs a high level signal to the terminal equipment through the control signal input end IN2, and the power adapter outputs electric energy to the terminal equipment through the first output end OUT1 and the second output end OUT2, so that the terminal equipment works normally.
When the power failure occurs, the power adapter is disconnected with the external power supply device, at this time, the power input end is connected with the IN1 to stop inputting electric energy, the control signal of the control signal input end IN2 is changed from a high level signal to a low level signal, the capacitive energy storage module 2 releases the electric energy stored before the power failure, and the electric energy can be continuously output to the terminal device through the first output end OUT1 and the second output end OUT2, so that the terminal device works temporarily. Preferably, the control signal input terminal IN2 is connected to a GPIO (general purpose input/output) detection pin of the central processing unit 4, and at this time, the GPIO detection pin of the central processing unit 4 detects the low level signal, and the central processing unit 4 can know that power down has occurred, and can complete sending of the Dying gasp signal IN time.
Preferably, the control signal input terminal I N2 is connected to an enable pin of the second power control chip 3, the enable signal output terminal OUT3 is connected to a non-essential module in the terminal device, and power is output to the non-essential module through the enable signal output terminal OUT3 so that the non-essential module operates normally, and the non-essential module is preferably a module that is not required for the central processing unit 4 to send a signal when a power-down condition occurs, and may be, for example, a WiFi (wireless communication) or USB (universal serial bus) module. When the enable pin receives the low level signal, the second power control chip 3 stops working, and at this time, the unnecessary module stops working, and the central processing unit 4 is not required to close the unnecessary module through a GPIO detection pin, and energy is also lost when the central processing unit 4 is closed, so that electric energy can be saved.
In specific implementation, the power adapter outputs a low level signal when power failure occurs, meanwhile, power is supplied to the terminal equipment for a short time through the capacitive energy storage module 2, the terminal equipment completes sending of a Dying Gasp signal when receiving the low level signal, in addition, the terminal equipment closes the power supply function of a non-necessary module when receiving the low level signal, and electric energy is saved.
Compared with the prior art, the embodiment of the utility model discloses an electronic equipment has solved among the prior art and has continued the power supply of short duration through the energy storage electric capacity that user data line self carried behind plug power adapter, can occupy the space of user data line, causes the increase of cost and the not high problem of commonality. When the power failure occurs, the capacitor in the power adapter continuously supplies power to the equipment connected with the adapter, so that the equipment can finish sending the Dying Gasp signals, the cost is low, and the universality is high.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (10)
1. A power adapter, comprising: the power supply comprises a power supply input end, a control signal output end, a first output end, a second output end, a first power supply control chip, a capacitive energy storage module and a Schottky diode; wherein,
the first end of the first power supply control chip is connected with the power supply input end, the second end of the first power supply control chip is connected with the control signal output end, and the third end of the first power supply control chip is connected with the second output end;
the first end of the capacitive energy storage module is connected with the first output end, and the second end of the capacitive energy storage module is connected with the second output end;
the positive pole of the Schottky diode is connected with the second end of the first power supply control chip, and the negative pole of the Schottky diode is connected with the first output end.
2. The power adapter as claimed in claim 1, wherein the capacitive energy storage module comprises a first capacitor and a second capacitor, a first end of the first capacitor is connected to the first output terminal, a second end of the first capacitor is connected to ground, and a second end of the first capacitor is further connected to the second output terminal; the first end of the second capacitor is connected with the first output end, the second end of the second capacitor is grounded, and the second end of the second capacitor is also connected with the second output end.
3. The power adapter as claimed in claim 2, wherein the first capacitor is a polar capacitor; the second capacitor is a polar capacitor.
4. The power adapter as claimed in claim 1, wherein said power adapter is adapted to be connected to a terminal device, said terminal device including a central processing unit, said control signal output being adapted to be connected to said central processing unit.
5. The power adapter as claimed in claim 1, wherein the power adapter is adapted to connect to a terminal device, the terminal device includes a second power control chip, and the control signal output is further adapted to connect to the second power control chip.
6. The power adapter as described in claim 1, wherein said first power control chip is an AC-DC power chip.
7. A terminal device, comprising: the power supply comprises a control signal input end, an enable signal output end, a second power supply control chip, a central processing unit, a first resistor, a second resistor, a third resistor and a fourth resistor; wherein,
the first end of the first resistor is grounded, the second end of the first resistor is connected with the first end of the second power supply control chip, and the second end of the second power supply control chip is connected with the enable signal output end;
the first end of the second resistor is connected with the second end of the first resistor, and the second end of the second resistor is connected with the control signal input end;
the first end of the third resistor is connected with the control signal input end, and the second end of the third resistor is connected with the central processing unit;
the first end of the fourth resistor is connected with the second end of the third resistor, the first end of the fourth resistor is further connected with the central processing unit, and the second end of the fourth resistor is grounded.
8. The terminal device of claim 7, wherein the second power control chip is a DC-DC power chip.
9. The terminal device of claim 7, wherein the terminal device is an XDSL device or a GFAST device.
10. An electronic device comprising the power adapter according to any one of claims 1 to 6 and the terminal device according to any one of claims 7 to 9; wherein,
and the control signal output end in the power adapter is connected with the control signal input end in the terminal equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489884.5U CN208209616U (en) | 2018-04-08 | 2018-04-08 | A kind of power supply adaptor, terminal device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489884.5U CN208209616U (en) | 2018-04-08 | 2018-04-08 | A kind of power supply adaptor, terminal device and electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN208209616U true CN208209616U (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820489884.5U Expired - Fee Related CN208209616U (en) | 2018-04-08 | 2018-04-08 | A kind of power supply adaptor, terminal device and electronic equipment |
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| Country | Link |
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| CN (1) | CN208209616U (en) |
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2018
- 2018-04-08 CN CN201820489884.5U patent/CN208209616U/en not_active Expired - Fee Related
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