CN219247497U - Bluetooth adapter and Bluetooth adapter system - Google Patents
Bluetooth adapter and Bluetooth adapter system Download PDFInfo
- Publication number
- CN219247497U CN219247497U CN202223016300.8U CN202223016300U CN219247497U CN 219247497 U CN219247497 U CN 219247497U CN 202223016300 U CN202223016300 U CN 202223016300U CN 219247497 U CN219247497 U CN 219247497U
- Authority
- CN
- China
- Prior art keywords
- control chip
- bluetooth adapter
- charging
- voltage
- diode
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a Bluetooth adapter, which comprises a control chip, a power supply circuit and a charging and discharging circuit, wherein the control chip is connected with electronic equipment through an interface; the power supply circuit receives a power supply voltage from the electronic equipment through the interface, and is used for converting the power supply voltage into a charging voltage so as to provide the charging voltage to the control chip; the charging and discharging circuit is connected with the control chip, and the control chip is used for controlling the charging and discharging circuit to supply power for the control chip when detecting that the charging voltage is smaller than the preset voltage. The control chip detects that the charging voltage is smaller than the preset voltage, namely, the Bluetooth adapter and the electronic equipment are disconnected, the control chip controls the charging and discharging circuit to supply power for the control chip, so that the Bluetooth adapter is prevented from being directly powered off, data loss in the Bluetooth adapter is prevented, the Bluetooth adapter is prevented from being damaged, and the use experience of a user is improved.
Description
Technical Field
The application relates to the technical field of bluetooth communication, in particular to a bluetooth adapter and a bluetooth adapter system.
Background
Bluetooth adapters are typically connected to electronic devices, such as cell phones, computers, etc., through a USB (Universal Serial Bus ) interface. Wherein the electronic device is generally used for supplying power to the Bluetooth adapter so that the Bluetooth adapter can communicate with the electronic device.
However, when the bluetooth adapter is directly disconnected from the electronic device, the bluetooth adapter can only be directly powered off passively, and such a direct "violent" power-off mode can cause data loss in the bluetooth adapter, even damage the storage unit of the bluetooth adapter, and affect the use experience of the user.
Disclosure of Invention
In view of the above, the present application provides a bluetooth adapter and a bluetooth adapting system to solve the above-mentioned problems.
The present application provides a bluetooth adapter, the bluetooth adapter has an interface, the bluetooth adapter includes:
the control chip is connected with the electronic equipment through the interface;
a power supply circuit that receives a power supply voltage from the electronic device through the interface, the power supply circuit being configured to convert the power supply voltage into a charging voltage to provide the charging voltage to the control chip;
a charge-discharge circuit connected with the control chip,
and the control chip is used for controlling the charge-discharge circuit to supply power for the control chip when detecting that the charge voltage is smaller than a preset voltage.
The Bluetooth adapter comprises a power converter, wherein the input end of the power converter is connected with the power supply circuit to receive the charging voltage; the power converter is used for converting the charging voltage into a first voltage, and the charging and discharging circuit is connected with the output end of the power converter so as to receive the first voltage.
The charging and discharging circuit comprises a first resistor, a first diode, a second diode, a third diode and a Farad capacitor;
one end of the first resistor, the positive electrode of the first diode and the positive electrode of the second diode are connected with the output end of the power converter so as to receive the first voltage;
the negative electrode of the first diode is connected with the control chip and is used for outputting a second voltage to the control chip;
the cathode of the second diode is connected with the Faraday capacitor and the anode of the third diode respectively, and the cathode of the third diode is connected with the cathode of the first diode.
The Bluetooth adapter further comprises a second resistor, a third resistor and a first capacitor, wherein one end of the second resistor is connected with the input end of the power converter, and the other end of the second resistor is grounded through the first capacitor;
one end of the third resistor is connected with the other end of the second resistor and the detection port of the control chip, and the other end of the third resistor is grounded.
And the control chip is used for controlling the power converter to charge the Faraday capacitor through the second diode when detecting that the charging voltage is greater than or equal to the preset voltage.
And the control chip is used for controlling the Faraday capacitor to supply power to the control chip through the third diode when the charging voltage is detected to be smaller than the preset voltage.
The power supply circuit comprises a charging chip and a switching circuit, wherein the input end of the charging chip is connected with the electronic equipment through the interface, and the output end of the charging chip is connected with the input end of the power converter through the switching circuit.
The other end of the first resistor is connected with the charging chip.
The Bluetooth adapter further comprises a switch and a display unit, wherein the switch and the display unit are respectively connected with the control chip.
The application also provides a Bluetooth adapter system, which comprises the Bluetooth adapter, bluetooth equipment and electronic equipment, wherein the Bluetooth equipment is matched with the electronic equipment through the Bluetooth adapter.
The Bluetooth adapter comprises a control chip, a power supply circuit and a charging and discharging circuit, wherein the control chip is connected with electronic equipment through an interface; the power supply circuit receives a power supply voltage from the electronic equipment through the interface, and is used for converting the power supply voltage into a charging voltage so as to provide the charging voltage to the control chip; the charging and discharging circuit is connected with the control chip, and the control chip is used for controlling the charging and discharging circuit to supply power for the control chip when detecting that the charging voltage is smaller than the preset voltage. The control chip detects that the charging voltage is smaller than the preset voltage, namely, the Bluetooth adapter and the electronic equipment are disconnected, the control chip controls the charging and discharging circuit to supply power for the control chip, so that the Bluetooth adapter is prevented from being directly powered off, data loss in the Bluetooth adapter is prevented, the Bluetooth adapter is prevented from being damaged, and the use experience of a user is improved.
Drawings
The application will be further described with reference to the accompanying drawings and embodiments, in which:
fig. 1 is a schematic diagram of a framework of a first embodiment of a bluetooth adapter of the present application;
fig. 2 is a schematic diagram of a framework of a second embodiment of the bluetooth adapter of the present application;
FIG. 3 is a schematic circuit diagram of the power converter and the charge-discharge circuit of FIG. 2;
fig. 4 is a schematic diagram of the framework of the first embodiment of the bluetooth adapter system according to the present application.
Detailed Description
The following describes the embodiments of the present application in detail with reference to the drawings.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The term "and/or" in this application is merely an association relation describing an associated object, and indicates that three relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. Further, "a plurality" herein means two or more than two. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C. Furthermore, the terms "first," "second," and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
In order to enable those skilled in the art to better understand the technical solutions of the present application, the technical solutions of the present application are described in further detail below with reference to the accompanying drawings and the detailed description.
The Bluetooth adapter is used for pairing the Bluetooth device with the electronic device, wherein the Bluetooth device can comprise a Bluetooth earphone, a Bluetooth sound box, a Bluetooth keyboard or a Bluetooth mouse and the like; the electronic device may include a cell phone, tablet computer, smart television, notebook computer, desktop computer, or the like.
The Bluetooth adapter and the electronic equipment in the prior art are directly disconnected, and at the moment, the Bluetooth adapter is directly powered off passively, so that data in the Bluetooth adapter is lost, and even a storage unit of the Bluetooth adapter is damaged, and the use experience of a user is influenced.
In order to solve the above technical problems, the present application provides a bluetooth adapter, please refer to fig. 1, fig. 1 is a schematic frame diagram of a first embodiment of the bluetooth adapter of the present application.
The bluetooth adapter 10 of the present embodiment includes a control chip 13, a power supply circuit 11 and a charging/discharging circuit 12, wherein the bluetooth adapter 10 is provided with an interface 14, the bluetooth adapter 10 is connected with an electronic device 20 through the interface 14, for example, the interface 14 is a USB interface, such as a USB Type-C (USB-C, USB interface profile standard) interface, and the bluetooth adapter 10 is directly connected with the electronic device 20 through the interface 14, so that the bluetooth adapter 10 communicates with the electronic device 20.
The control chip 13 is connected to the electronic device 20 through the interface 14, so that the control chip 13 communicates with the electronic device 20. The control Chip 13 may be an SOC (System on Chip) or an MCU (Microcontroller Unit, micro control unit). For example, the control chip 13 is an SOC including at least one of a low complexity sub-band codec, an audio codec, and a low complexity communication codec.
Optionally, the connector 14 is a male connector of the USB-C, the control chip 13 performs USB transmission with the male connector of the USB-C, the male connector of the USB is connected to the electronic device 20, at this time, the bluetooth adapter 10 performs USB transmission with the electronic device 20, and the electronic device 20 supplies power to the bluetooth adapter 10.
The power supply circuit 11 receives the power supply voltage VBUS from the electronic device 20 through the interface 14, for example, the power supply circuit 11 is connected to a CC pin of the male end of the USB-C, so that the power supply circuit 11 receives the power supply voltage VBUS through the CC pin. The power supply circuit 11 is connected with the control chip 13 and is used for supplying power to the control chip 13 so as to enable the control chip 13 to work normally.
The charge/discharge circuit 12 is connected to the power supply circuit 11 and the control chip 13, respectively, and the power supply circuit 11 charges the charge/discharge circuit 12 when the power supply circuit 11 supplies power to the control chip 13. When the power supply circuit 11 stops supplying power to the control chip 13, the charge and discharge circuit 12 supplies power to the control chip 13, so as to prevent the Bluetooth adapter 10 from being directly powered off, and further prevent data loss in the Bluetooth adapter 10.
Specifically, the control chip 13 has a detection port ADC, and the detection port ADC of the control chip 13 is connected to the power supply circuit 11 for detecting the charging voltage Vc of the power supply circuit. The control chip 13 detects that the charging voltage Vc is smaller than a preset voltage, and is used to control the charging/discharging circuit 12 to supply power to the control chip 13. Wherein the range of the preset voltage is 4V-5V. For example, the control chip 13 detects that the charging voltage Vc is less than 4V, that is, the bluetooth adapter 10 is disconnected from the electronic device 20, and the control chip 13 controls the charging and discharging circuit 12 to supply power to the control chip 13.
The bluetooth adapter 10 of the present embodiment includes a control chip 13, a power supply circuit 11 and a charge/discharge circuit 12, where a detection port ADC of the control chip 13 is connected to the power supply circuit 11 and is used for detecting a charging voltage Vc of the power supply circuit; the control chip 13 detects that the charging voltage Vc is smaller than a preset voltage, and is used to control the charging/discharging circuit 12 to supply power to the control chip 13. Therefore, the Bluetooth adapter 10 is prevented from being directly powered off, so that the data in the Bluetooth adapter 10 is prevented from being lost, the Bluetooth adapter 10 is prevented from being damaged, and the use experience of a user is improved.
Referring to fig. 2, fig. 2 is a schematic diagram of a second embodiment of the bluetooth adapter according to the present application. The bluetooth adapter 10 of the present embodiment is described on the basis of the bluetooth adapter 10 disclosed in the first embodiment.
The bluetooth adapter 10 of the present embodiment further includes a power converter 113, wherein an input end of the power converter 113 is connected to the power supply circuit 11 to receive the charging voltage Vc; the power converter 113 is configured to convert the charging voltage Vc into a first voltage V1, and the charging/discharging circuit 12 is connected to an output terminal of the power converter 113 to receive the first voltage V1, where the first voltage V1 charges the charging/discharging circuit 12.
The power supply circuit 11 includes a charging chip 111 and a switching circuit 112, wherein an input end of the charging chip 111 is connected to the electronic device 20 through the interface 14, and an output end of the charging chip 111 is connected to an input end of the power converter 113 through the switching circuit 112.
The charging chip 111 may be a PD (Power Delivery) protocol chip, for example, an input terminal of the charging chip 111 is connected to a CC pin of a male terminal of the USB-C to receive the supply voltage VBUS from the electronic device 20. The switch circuit 112 is used to control the charging chip 111 and the power converter 113 to be turned on or off, for example, when the power supply circuit 11 stops supplying power to the control chip 13, the switch circuit 112 controls the charging chip 111 and the power converter 113 to be turned off; when the power supply circuit 11 supplies power to the control chip 13, the switch circuit 112 controls the charging chip 111 and the power converter 113 to be turned on.
It should be noted that the power converter 113 of the present embodiment is used as an independent component of the bluetooth adapter 10; in other embodiments, the power converter 113 may be a component of the power supply circuit 11 or a component of the charge-discharge circuit 12.
The power converter 113 may be an LDO (low dropout regulator, low dropout linear regulator) or a DC-DC (direct current circuit), which is a device for changing one voltage value to another voltage value. The detection port ADC of the control chip 13 is connected between the switch circuit 112 and the power converter 113 for detecting the charging voltage Vc of the power supply circuit 11.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of the power converter and the charging/discharging circuit in fig. 2. As shown in fig. 2 to 3, the charge/discharge circuit 12 includes a first resistor R1, a first diode D1, a second diode D2, a third diode D3, and a faraday capacitor F.
The power converter 113 of the present embodiment includes a port Vin, a port CE, a port OUT, a port VSS, and a port GND, where the port VSS and the port GND are grounded, respectively, the port OUT is used as an output terminal of the power converter 113 for outputting the first voltage V1, and the port Vin and the port CE are used as input terminals of the power converter 113 for receiving the charging voltage Vc.
One end of the first resistor R1, the anode of the first diode D1, and the anode of the second diode D2 are connected to the output end of the power converter 113, for receiving the first voltage V1 from the power converter 113. The other end of the first resistor R1 is connected to the charging chip 111 for providing the third voltage VPD to the charging chip 111.
The cathode of the first diode D1 is connected with the control chip 13 and is used for outputting a second voltage VBT to the control chip 13 so as to supply power for the control chip 13; when the power converter 113 supplies power to the control chip 13, the output end of the power converter 113 supplies power to the control chip 13 through the first diode D1, and at this time, the second voltage VBT is equal to the first voltage V1.
The negative electrode of the second diode D2 is connected to the positive electrodes of the farad capacitor F and the third diode D3, respectively, and the negative electrode of the third diode D3 is connected to the negative electrode of the first diode D1. When the power converter 113 supplies power to the control chip 13, the power converter 113 charges the faraday capacitor F through the second diode D2; when the faraday capacitor F supplies power to the control chip 13, the faraday capacitor F is connected to the control chip 13 through the third diode D3.
The power supply circuit 11 further includes a second resistor R2, a third resistor R3, and a first capacitor C, where one end of the second resistor R2 is connected to the input end of the power converter 113, the other end of the second resistor R2 is grounded through the first capacitor C, one end of the third resistor R3 is connected to the other end of the second resistor R2 and the detection port ADC of the control chip 13, and the other end of the third resistor R3 is grounded. In other embodiments, the second resistor R2, the third resistor R3, and the first capacitor C may be referred to as a detection circuit.
The following describes the operation principle of the bluetooth adapter 10.
The Bluetooth adapter 10 is connected with the electronic device 20 through the interface 14, and the power supply circuit 11 receives the power supply voltage VBUS from the electronic device 20 to supply power to the control chip 13, and at this time, the control chip 13 is powered on. The control chip 13 detects the charging voltage Vc of the power supply circuit 11 through the detection port ADC to determine whether the bluetooth adapter 10 is powered off or not through the charging voltage Vc.
The control chip 13 compares the charging voltage Vc with a preset voltage; the control chip 13 detects that the charging voltage Vc is greater than or equal to a preset voltage, the power converter 113 of the power supply circuit 11 supplies power to the control chip 13 through the first diode D1, and the power converter 113 charges the faraday capacitor F through the second diode D2.
The control chip 13 detects that the charging voltage Vc is smaller than the preset voltage, namely the control chip 13 judges that the Bluetooth adapter 10 is directly powered off, and the control chip 13 can enter a low-power consumption mode and execute a shutdown instruction; the control chip 13 may control the switch circuit 112 to be turned off, and the faraday capacitor F supplies power to the control chip 13 through the third diode D3. Furthermore, the Bluetooth adapter 10 is prevented from being directly powered off, so that the data in the Bluetooth adapter 10 is prevented from being lost, the Bluetooth adapter 10 is prevented from being damaged, and the use experience of a user is improved.
Optionally, the bluetooth adapter 10 further includes a switch, a display unit, and an antenna, where the switch, the display unit, and the antenna are respectively connected to the control chip 13, the switch is used to control the bluetooth adapter 10 to be turned on or off, and the display unit is used to indicate whether the bluetooth adapter 10 works normally, and the bluetooth adapter 10 communicates with the bluetooth device through the antenna.
Optionally, the interface 14 of the Bluetooth adapter 10 may also be connected to a female of the USB-C of the charging cord to power the Bluetooth adapter 10 through the charging cord.
The present application further provides a bluetooth adapter system, as shown in fig. 4, where the bluetooth adapter system of the present embodiment includes the bluetooth adapter 10, the bluetooth device 30 and the electronic device 20 as disclosed in the foregoing embodiments, where the bluetooth adapter 10 is connected to the electronic device 20, and the bluetooth device 30 is matched with the electronic device 20 through the bluetooth adapter 10.
The Bluetooth adapter 10 comprises a control chip 13, a power supply circuit 11 and a charging and discharging circuit 12, wherein a detection port ADC of the control chip 13 is connected with the power supply circuit 11 and used for detecting charging voltage Vc of the power supply circuit; the control chip 13 detects that the charging voltage Vc is smaller than a preset voltage, and is used to control the charging/discharging circuit 12 to supply power to the control chip 13. Therefore, the Bluetooth adapter 10 is prevented from being directly powered off, so that the data in the Bluetooth adapter 10 is prevented from being lost, the Bluetooth adapter 10 is prevented from being damaged, and the use experience of a user is improved.
It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present utility model and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present utility model as defined in the following claims.
Claims (10)
1. A bluetooth adapter having an interface, the bluetooth adapter comprising:
the control chip is connected with the electronic equipment through the interface;
a power supply circuit that receives a power supply voltage from the electronic device through the interface, the power supply circuit being configured to convert the power supply voltage into a charging voltage to provide the charging voltage to the control chip;
and the charging and discharging circuit is connected with the control chip and is used for controlling the charging and discharging circuit to supply power for the control chip when the charging voltage is detected to be smaller than the preset voltage.
2. The bluetooth adapter according to claim 1, wherein the bluetooth adapter comprises a power converter, an input of the power converter being connected to the power supply circuit for receiving the charging voltage; the power converter is used for converting the charging voltage into a first voltage, and the charging and discharging circuit is connected with the output end of the power converter so as to receive the first voltage.
3. The bluetooth adapter according to claim 2, wherein the charge-discharge circuit comprises a first resistor, a first diode, a second diode, and a third diode, and a faraday capacitor;
one end of the first resistor, the positive electrode of the first diode and the positive electrode of the second diode are connected with the output end of the power converter so as to receive the first voltage;
the negative electrode of the first diode is connected with the control chip and is used for outputting a second voltage to the control chip;
the cathode of the second diode is connected with the Faraday capacitor and the anode of the third diode respectively, and the cathode of the third diode is connected with the cathode of the first diode.
4. The bluetooth adapter according to claim 3, wherein the bluetooth adapter comprises a second resistor, a third resistor and a first capacitor, wherein one end of the second resistor is connected with the input end of the power converter, and the other end of the second resistor is grounded through the first capacitor;
one end of the third resistor is connected with the other end of the second resistor and the detection port of the control chip, and the other end of the third resistor is grounded.
5. The bluetooth adapter according to claim 4, wherein the control chip is configured to control the power converter to charge the faraday capacitor through the second diode when the charging voltage is detected to be greater than or equal to the preset voltage.
6. The bluetooth adapter according to claim 4, wherein the control chip is configured to control the faraday capacitor to supply power to the control chip through the third diode when the charging voltage is detected to be less than the preset voltage.
7. The bluetooth adapter according to claim 4, wherein the power supply circuit comprises a charging chip and a switching circuit, wherein an input end of the charging chip is connected with the electronic device through the interface, and an output end of the charging chip is connected with an input end of the power converter through the switching circuit.
8. The bluetooth adapter according to claim 7, wherein the other end of the first resistor is connected to the charging chip.
9. The bluetooth adapter according to any of claims 1-8, further comprising a switch and a display unit, the switch and the display unit being connected to the control chip, respectively.
10. A bluetooth adaptation system, comprising a bluetooth adapter according to any of claims 1-9, a bluetooth device and an electronic device, the bluetooth device being adapted to the electronic device via the bluetooth adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223016300.8U CN219247497U (en) | 2022-11-11 | 2022-11-11 | Bluetooth adapter and Bluetooth adapter system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223016300.8U CN219247497U (en) | 2022-11-11 | 2022-11-11 | Bluetooth adapter and Bluetooth adapter system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219247497U true CN219247497U (en) | 2023-06-23 |
Family
ID=86805932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223016300.8U Active CN219247497U (en) | 2022-11-11 | 2022-11-11 | Bluetooth adapter and Bluetooth adapter system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219247497U (en) |
-
2022
- 2022-11-11 CN CN202223016300.8U patent/CN219247497U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2587159C2 (en) | Mobile terminal and interface connection method therefor | |
| CN201570873U (en) | Device and integrated circuit for achieving intelligent power management of USB port | |
| US11258280B2 (en) | Mobile terminal, peripheral device, and charging method thereof | |
| CN108988431B (en) | Multi-protocol charging device and multi-protocol charging method | |
| US10241935B2 (en) | Portable device, cable assembly, and USB system | |
| CN110098652B (en) | Mobile phone, mobile phone main body device and mobile phone endurance device | |
| CN102064582A (en) | Terminal capable of supplying power for outside | |
| US20100301674A1 (en) | Control circuit and electronic device including the same | |
| US20110140652A1 (en) | Charging Apparatus for Electronic Devices | |
| JP2016531368A (en) | Apparatus and method for changing current limit value | |
| KR20120042445A (en) | Method and apparatus for charging for battery of portable terminal | |
| US20040232768A1 (en) | Portable electronic device for receiving power over a network | |
| CN211405512U (en) | Adapter | |
| CN219247497U (en) | Bluetooth adapter and Bluetooth adapter system | |
| EP4216030A1 (en) | Power delivery device and control method of power supply path | |
| CN112086830B (en) | Data line circuit communicating with iOS device | |
| CN214626428U (en) | Charging device capable of displaying electric quantity percentage | |
| CN114285128A (en) | Outdoor equipment power supply control circuit, outdoor equipment power supply system and outdoor equipment | |
| CN114421446A (en) | Outdoor equipment power supply control method, power supply control system and outdoor equipment | |
| US20200117257A1 (en) | Method and device for power control | |
| CN217085554U (en) | USB Type-C interface plug wire awakening circuit and information receiving equipment | |
| CN215647304U (en) | External sound card and audio system | |
| CN211183781U (en) | Power adapter | |
| CN219801931U (en) | Mobile power supply output port control circuit | |
| CN215580480U (en) | Decoder charging circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |