CN218352552U - Television power supply circuit and television - Google Patents
Television power supply circuit and television Download PDFInfo
- Publication number
- CN218352552U CN218352552U CN202222040508.7U CN202222040508U CN218352552U CN 218352552 U CN218352552 U CN 218352552U CN 202222040508 U CN202222040508 U CN 202222040508U CN 218352552 U CN218352552 U CN 218352552U
- Authority
- CN
- China
- Prior art keywords
- module
- television
- power
- voltage
- resistor
- 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
Landscapes
- Television Receiver Circuits (AREA)
Abstract
The application provides a television power supply circuit and a television, wherein an energy storage module is added in the television power supply circuit, so that when the television is in a standby state, the energy storage module supplies power to a standby load, and a power supply module stops supplying power; or the power module supplies power to the standby load and simultaneously charges the energy storage module. Therefore, the power module of the television is in an intermittent working state, the switching times of each switching tube in the power module can be reduced, and the switching loss is reduced so as to further reduce the power consumption of the television in the standby state.
Description
Technical Field
The application belongs to the technical field of electronics, and particularly relates to a television power supply circuit and a television.
Background
With the development of society, energy conservation and environmental protection gradually become hot topics in the society nowadays.
Many televisions on the market today add to the standby mode. When the user turns on the television for a period of time and does not use the television, the television automatically enters the standby mode from the turn-on mode. When the user uses it again, the appliance can be switched quickly from the standby mode back to the on mode. Since the standby mode power consumption is less than the power consumption of the power-on mode, the power can be saved.
However, how to further reduce the power consumption in the standby mode of the television becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a television power supply circuit, which can reduce the switching times of a switching tube in a power module when a television is in a standby state, thereby reducing the technical effect of further reducing the power consumption when the television is in the standby state by reducing the switching loss.
In order to achieve the above purpose, the present application provides the following technical solutions:
a television supply circuit comprising:
a standby load;
the energy storage module is connected with the standby load and used for supplying power to the standby load;
the power supply module is connected with the standby load and the energy storage module and used for supplying power to the standby load and charging the energy storage module;
when the television is in a standby state, the energy storage module supplies power to the standby load; or the power module supplies power to the standby load and charges the energy storage module at the same time.
In some embodiments, the television power supply circuit further includes a switch module, and the energy storage module and the standby load are both connected to the power supply module through the switch module.
In some embodiments, the television power supply circuit further includes a comparator, an output end of the comparator is connected to the switch module, a first input end of the comparator is used for inputting a first voltage, a second input end of the comparator is used for inputting a second voltage, the first voltage is positively correlated to the voltage of the energy storage module, the second voltage is positively correlated to the voltage of the power supply module, the comparator outputs a control signal based on a magnitude relation between the first voltage and the second voltage, and the control signal is used for controlling the switch module to be turned on or off.
In some embodiments, when the first voltage is greater than the second voltage, the comparator outputs a first control signal to the switch module, the first control signal being used to turn off the switch module; when the first voltage is less than or equal to the second voltage, the comparator outputs a second control signal to the switch module, and the second control signal is used for enabling the switch module to be conducted.
In some embodiments, the switch module includes a field effect transistor, a gate of the field effect transistor is connected to the output terminal of the comparator, a source of the field effect transistor is connected to the power supply module, and a drain of the field effect transistor is connected to the energy storage module and the standby load.
In some embodiments, the television supply circuit further comprises:
the first voltage sampling circuit comprises a first resistor and a second resistor, wherein a first end of the first resistor is connected with a first end of the energy storage module, a second end of the first resistor is connected with a first end of the second resistor, a second end of the second resistor is connected with a second end of the energy storage module, and a first input end of the comparator is connected between the second end of the first resistor and the first end of the second resistor so as to input the first voltage to a first input end of the comparator;
the second voltage sampling circuit comprises a third resistor and a fourth resistor, wherein the first end of the third resistor is connected with the power module, the second end of the third resistor is connected with the first end of the fourth resistor, the second end of the fourth resistor is grounded, and the second end of the third resistor is connected with the first end of the fourth resistor through a second input end of the comparator so as to input the second voltage to the second input end of the comparator.
In some embodiments, the television power supply circuit further includes an enable module connected to the switch module, and configured to send an enable signal to the switch module when the television receives a power-on signal, so as to turn on the switch module.
A television, comprising:
the television power supply circuit is the television power supply circuit;
and the input end of the power panel is connected with the mains supply, and the output end of the power panel is connected with the power module.
In some embodiments, the television further comprises a non-standby load connected to the power strip, and the power strip is further configured to supply power to the non-standby load.
In some embodiments, the non-standby load is further connected to an enabling module, and the enabling signal output by the enabling module is further used for operating the non-standby load.
According to the television power supply circuit provided by the embodiment of the application, the energy storage module is added in the television power supply circuit, so that when a television is in a standby state, the energy storage module supplies power to a standby load, and the power supply module stops supplying power; or the power module supplies power to the standby load and simultaneously charges the energy storage module. Therefore, the power module of the television is in an intermittent working state, and the switching times of each switching tube in the power module can be reduced, so that the switching loss is reduced, and the technical effect of further reducing the power consumption of the television in a standby state is realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.
For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.
Fig. 1 is a schematic diagram of a first structure of a television power supply circuit according to an embodiment of the present application.
Fig. 2 is a schematic diagram of a second structure of a television power supply circuit according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a third structure of a television power supply circuit according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a television according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a power supply circuit for a television, which is applied to televisions, such as different types of televisions including an integral television, a split television, a curved surface television and the like. The power supply circuit can supply power for standby loads of a television, such as an infrared module, a far-field voice module and the like.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a first structure of a television power supply circuit 100 according to an embodiment of the present disclosure. The television power supply circuit 100 includes a standby load 110, an energy storage module 120, and a power supply module 130.
The standby load 110 is a load that still needs to be operated when the television is in a standby state. In some embodiments, standby load 110 may include a far-field speech module. When the television is in a standby state, the far-field voice module is still in a working state, and a user can correspondingly control the television through a specific language. For example, an "on" command may be spoken to the television to cause the television to switch from the standby state to the on state. Alternatively, the standby load 110 may include, for example, a standby indicator, a memory, a chip, an infrared module, and the like, in addition to the far-field voice module described above. In addition, the voltage required by the standby load 110 may be, for example, 3.3V.
The energy storage module 120 is connected to the standby load 110 and the power supply module 130, and is configured to supply power to the standby load 110 and be charged by the energy storage module 120. When the energy storage module 120 supplies power to the standby load 110, the power supply module 130 does not supply power. The energy storage module 120 may store and release electric energy, and may be a capacitor, an inductor, or a battery, for example.
The power module 130 is connected to the standby load 110 and the energy storage module 120, and is configured to supply power to the standby load 110 and charge the energy storage module 120. In some embodiments, the power module 130 includes a dc-dc converter circuit for converting an input voltage into a first dc voltage, which is used to power the standby load 110. The first direct current voltage may be, for example, a voltage of 3.3V. Optionally, the power module 130 may further include a dc-dc converter circuit, an ac-dc converter circuit, and other circuits having functions of filtering, stabilizing voltage, and the like.
In practical applications, the television is in a standby state, and during a certain period of time, the power module 130 simultaneously supplies power to the standby load 110 and charges the energy storage module 120. When the power of the energy storage module 120 reaches a preset value, which may be 3.3V, the power supply module 130 stops supplying power and switches to supply power from the energy storage module 120 to the standby load 110. After the energy storage module 120 continuously supplies power to the standby load 110 for a period of time, the power of the energy storage module 120 gradually decreases, and the voltage also gradually decreases. When the power of the energy storage module 120 is lower than a predetermined value, the voltage is lower than the predetermined value, and the energy storage module 120 stops supplying power and switches back to the power supply mode of the power module 130. Therefore, the power module 130 of the television is in an intermittent working state, and the switching times of each switching tube in the power module 130 can be reduced, so that the switching loss is reduced to reduce the power consumption of the television in the standby state, and the television is energy-saving and environment-friendly.
In other embodiments, referring to fig. 2 for example, fig. 2 is a schematic diagram of a second structure of the television power supply circuit 100 according to the embodiment of the present application, and the television power supply circuit 100 may further include a switch module 140, a comparator 150, a first voltage sampling circuit 161, a second voltage sampling circuit 162, and an enabling module 170.
The standby load 110 and the energy storage module 120 are connected to the power module 130 through the switch module 140. When the television is in a standby state, and the switch module 140 is turned on, the power module 130 is connected to the standby load 110 and the energy storage module 120, and the power module 130 supplies power to the standby load 110 and charges the energy storage module 120; when the switch module 140 is turned off, the connection between the power module 130 and the standby load 110 and the energy storage module 120 is disconnected, the power module 130 stops supplying power, and the energy storage module 120 supplies power to the standby load 110.
The comparator 150 includes a first input terminal P1, a second input terminal P2, and an output terminal P3. The first input terminal P1 is connected to the first voltage sampling circuit 161, and is used for inputting a first voltage; the second input terminal P2 is connected to the second voltage sampling circuit 162, and is used for inputting a second voltage; the output terminal P3 is connected to the switch module 140 for outputting the control signal. The first voltage is positively correlated to the voltage of the energy storage module 120, and the second voltage is positively correlated to the voltage of the power supply module 130. The comparator 150 may compare a magnitude relationship of the first voltage and the second voltage and output a control signal based on the magnitude relationship of the first voltage and the second voltage.
The first voltage sampling circuit 161 is connected to the energy storage module 120, and is configured to sample a voltage output by the energy storage module 120 and output a first voltage to a first input terminal P1 of the comparator 150; the second voltage sampling circuit 162 is connected to the power module 130, and is configured to sample a voltage output by the power module 130 and output a second voltage to the second input terminal P2 of the comparator 150.
In a specific implementation, the first input terminal P1 may be a positive input terminal of the comparator 150, for example, and the second input terminal P2 may be a negative input terminal of the comparator 150, for example. When the first voltage is greater than the second voltage, the comparator 150 outputs a first control signal, which may be, for example, a high level, for turning off the switch module 140; when the first voltage is less than the second voltage, the comparator 150 outputs a second control signal, which may be a low level, for example, to turn on the switch module 140.
The enable module 170 is connected to the switch module 140, and is configured to output an enable signal to the switch module 140. Optionally, the enabling module 170 may be connected to the switch module 140 by a wire or wirelessly.
In a specific implementation, when the television is turned on, the enabling module 170 outputs an enabling signal, which may be, for example, a low level, for turning on the switching module 140. At this time, the power module 130 turns on the standby load 110 and the energy storage module 120. The power module 130 supplies power to the standby load 110 and simultaneously charges the energy storage module 120. After the energy storage module 120 is fully charged, the power supply module 130 no longer charges the energy storage module 120, and only needs to supply power to the standby load 110. When the television is in standby, the enable module 170 stops outputting the enable signal to the switch module 140.
To describe the specific circuit structure of the energy storage module 120, the switching module 140, the comparator 150, the first voltage sampling circuit 161 and the second voltage sampling circuit 162 in more detail, the following description will be made with reference to fig. 3. Referring to fig. 3, fig. 3 is a schematic diagram illustrating a third structure of a television power supply circuit 100 according to an embodiment of the present disclosure.
The energy storage module 120 may include, for example, a super capacitor C1. The super capacitor C1 is different from a traditional chemical power source, is a power source which is arranged between a traditional capacitor and a battery and has special performance, and mainly stores electric energy by electric double layers and redox pseudocapacitance charges. The energy storage process does not generate chemical reaction, and the energy storage process is reversible. Therefore, the supercapacitor C1 can be repeatedly charged and discharged several hundred thousand times.
In some embodiments, the switching module 140 may include a field effect transistor Q1. The source of the field effect transistor Q1 is connected to the power module 130, the gate thereof is connected to the output P3 of the comparator 150 and the enabling module 170, and the drain thereof is connected to the standby load 110 and the energy storage module 120. When the television is in standby, the turning-off or turning-on of the field effect transistor Q1 is controlled by the control signal output from the comparator 150.
In a specific application, when the first voltage is greater than the second voltage, the comparator 150 outputs a first control signal, the first control signal may be, for example, a high level, and when the high level is input to the gate of the fet Q1, the fet Q1 is turned off, so that the power module 130 is disconnected from the standby load 110 and the energy storage module 120, so that the power module 130 stops supplying power, and the energy storage module 120 supplies power to the standby load 110. After the energy storage module 120 supplies power for a period of time, the power level starts to gradually decrease, and the first voltage gradually decreases. When the first voltage is smaller than the second voltage, the comparator 150 outputs a second control signal, the second control signal may be a low level, for example, and the low level is input to the gate of the fet Q1, the fet Q1 is turned on, so that the power module 130 is turned on with the standby load 110 and the energy storage module 120, so that the power module 130 supplies power to the standby load 110 and charges the energy storage module 120. When the television is turned on, the enabling module 170 sends an enabling signal to the field effect transistor Q1, where the enabling signal may be a low level, for example, and is used to turn on the field effect transistor Q1, so that the power module 130 supplies power to the standby load 110 and simultaneously charges the energy storage module 120.
The comparator 150 further includes a power supply terminal, which is connected to the power module 130 and the energy storage module 120, and is configured to input an operating voltage to the comparator 150. When the power module 130 supplies power to the standby load 110, the comparator 150 is also supplied with power; when the energy storage module 120 supplies power to the standby load 110, the comparator 150 is also supplied with power.
In some embodiments, the first voltage sampling circuit 161 includes a first resistor R1 and a second resistor R2, a first end of the first resistor R1 is connected to the first end of the energy storage module 120, a second end of the first resistor R1 is connected to a first end of the second resistor R2, and a second end of the second resistor R2 is connected to the second end of the energy storage module 120. A first input terminal P1 of the comparator 150 is connected between the second terminal of the first resistor R1 and the first terminal of the second resistor R2, so as to input the first voltage to the first input terminal P1 of the comparator 150. The first voltage is a voltage carried by the second resistor R2. In some embodiments, the first voltage sampling circuit 161 may further include a second capacitor C2, and the second capacitor C2 is connected in parallel with the second resistor R2. The second capacitor C2 may serve as a buffer.
In some embodiments, the second voltage sampling circuit 162 includes a third resistor R3 and a fourth resistor R4, a first end of the third resistor R3 is connected to the power module 130, a second end of the third resistor R3 is connected to a first end of the fourth resistor R4, a second end of the fourth resistor R4 is connected to ground, and a second end of the third resistor R3 and a first end of the fourth resistor R4 are connected to the second input terminal P2 of the comparator 150, so as to input the second voltage to the second input terminal P2 of the comparator 150. The second voltage is the voltage carried by the fourth resistor R4. In specific implementation, the ratio of the second resistor R2 to the first resistor R1 is greater than the ratio of the fourth resistor R4 to the third resistor R3.
In some embodiments, the television supply circuit 100 may further include a protection circuit 180, and the protection circuit 180 is configured to protect the fet Q1, so as to prevent the fet Q1 from being broken down due to an excessive current or voltage carried by the fet Q1 due to current instability, static electricity, or other reasons. The protection circuit 180 may include, for example, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. One end of the sixth resistor R6 is connected with the grid electrode of the field effect transistor Q1, and the other end of the sixth resistor R is connected with the source electrode of the field effect transistor Q1, and the sixth resistor R is used for shunting the field effect transistor Q1 so as to prevent the field effect transistor Q1 from being broken down due to the fact that the sixth resistor R bears overlarge current. The first end of the fifth resistor R5 is connected to the gate of the fet Q1, the second end of the fifth resistor R5 is connected to the output terminal P3 of the comparator 150, the first end of the seventh resistor R7 is connected to the gate of the fet Q1, the second end of the seventh resistor R7 is connected to the enabling module 170, and the fifth resistor R5 and the seventh resistor R7 are both used to divide the voltage of the fet Q1, thereby preventing the fet Q1 from being broken down due to the excessive voltage carried by the fet Q1.
The scheme also provides a television 1000, which can be different types of televisions such as an integrated television, a split television, a curved surface television and the like. For example, please refer to fig. 4, fig. 4 is a schematic structural diagram of a television 1000 according to an embodiment of the present application. The television 1000 includes the above-described television power supply circuit 100, power board 200, and non-standby load 300.
One end of the power panel 200 is connected to the mains supply, and the other end of the power panel 200 is connected to the power module 130, and is used for supplying power to the power module 130; the other end of the power board 200 is also connected to the non-standby load 300 and supplies power to the non-standby load 300. In some embodiments, the power board 200 includes an ac-to-dc voltage conversion circuit for converting the input mains voltage into a second dc voltage, which is used to power the non-standby load 300 and the power module 130. In addition, the power board 200 may further include a circuit having functions of voltage stabilization, filtering, and the like.
The non-standby load 300 is a load that does not need to be operated when the television is in standby. For example, the non-standby load 300 may include a load such as a liquid crystal display, a sound, and the like. The non-standby load 300 is further connected to the enabling module 170, and the connection mode may be a wired connection or a wireless connection. When the television is turned on, the enabling module 170 sends an enabling signal to the non-standby load 300, and the enabling signal is used for enabling the non-standby load 300 to start operating.
In the television 1000 in this embodiment, by adding the super capacitor C1 to the television power supply circuit 100, the power module 130 supplies power to the standby load 110 and charges the super capacitor C1 at the same time when the television is in a standby state for a certain period of time. When the electric quantity of the super capacitor C1 is full, the super capacitor C1 is switched to supply power to the standby load 110, and the power module 130 stops supplying power. After the super capacitor C1 continuously supplies power for a period of time, the electric quantity thereof gradually decreases, the voltage output by the super capacitor C1 gradually decreases, and when the voltage decreases to a preset value, the super capacitor C1 is charged while the power module 130 is switched back to supply power to the standby load 110. Therefore, the power module 130 can intermittently supply power to the standby load 110, and the switching times of each switching tube in the power module 130 can be reduced, so that the switching loss is reduced to reduce the power consumption of the television in standby, and the effects of energy conservation and environmental protection are achieved.
The foregoing detailed description is directed to a television power supply circuit and a television provided in an embodiment of the present application, and a specific example is applied in the detailed description to explain the principles and embodiments of the present application, and the description of the foregoing embodiment is only used to help understand the method and core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A television supply circuit, comprising:
a standby load;
the energy storage module is connected with the standby load and used for supplying power to the standby load;
the power supply module is connected with the standby load and the energy storage module and used for supplying power to the standby load and charging the energy storage module;
when the television is in a standby state, the energy storage module supplies power to the standby load; or the power module supplies power to the standby load and simultaneously charges the energy storage module.
2. The television power supply circuit according to claim 1, further comprising a switch module, wherein the energy storage module and the standby load are both connected to the power supply module through the switch module.
3. The television power supply circuit according to claim 2, further comprising a comparator, wherein an output terminal of the comparator is connected to the switch module, a first input terminal of the comparator is used for inputting a first voltage, a second input terminal of the comparator is used for inputting a second voltage, the first voltage is positively correlated with the voltage of the energy storage module, the second voltage is positively correlated with the voltage of the power supply module, the comparator outputs a control signal based on a magnitude relation between the first voltage and the second voltage, and the control signal is used for controlling the switch module to be turned on or off.
4. The television power supply circuit of claim 3, wherein the comparator outputs a first control signal to the switch module when the first voltage is greater than the second voltage, the first control signal being configured to turn off the switch module; when the first voltage is less than or equal to the second voltage, the comparator outputs a second control signal to the switch module, and the second control signal is used for enabling the switch module to be conducted.
5. The TV power supply circuit according to claim 3 or 4, wherein the switch module comprises a field effect transistor, a gate of the field effect transistor is connected with the output end of the comparator, a source of the field effect transistor is connected with the power supply module, and a drain of the field effect transistor is connected with the energy storage module and the standby load.
6. The television supply circuit of claim 3 or 4, further comprising:
the first voltage sampling circuit comprises a first resistor and a second resistor, wherein a first end of the first resistor is connected with a first end of the energy storage module, a second end of the first resistor is connected with a first end of the second resistor, a second end of the second resistor is connected with a second end of the energy storage module, and a space between the second end of the first resistor and the first end of the second resistor is connected to a first input end of the comparator so as to input the first voltage to the first input end of the comparator;
the second voltage sampling circuit comprises a third resistor and a fourth resistor, wherein the first end of the third resistor is connected with the power module, the second end of the third resistor is connected with the first end of the fourth resistor, the second end of the fourth resistor is grounded, and the second end of the third resistor is connected with the first end of the fourth resistor through a second input end of the comparator so as to input the second voltage to the second input end of the comparator.
7. The television power supply circuit according to any one of claims 2 to 4, further comprising an enable module connected to the switch module, for sending an enable signal to the switch module to turn on the switch module when the television receives a power-on signal.
8. A television, comprising:
a television power supply circuit, the television power supply circuit being the television power supply circuit of any one of claims 1-7;
and the input end of the power panel is connected with the mains supply, and the output end of the power panel is connected with the power module.
9. The television of claim 8, further comprising a non-standby load coupled to the power strip, the power strip further configured to provide power to the non-standby load.
10. The television of claim 9, wherein the non-standby load is further connected to an enable module, and wherein an enable signal output by the enable module is further used to operate the non-standby load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222040508.7U CN218352552U (en) | 2022-08-03 | 2022-08-03 | Television power supply circuit and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222040508.7U CN218352552U (en) | 2022-08-03 | 2022-08-03 | Television power supply circuit and television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218352552U true CN218352552U (en) | 2023-01-20 |
Family
ID=84914597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222040508.7U Active CN218352552U (en) | 2022-08-03 | 2022-08-03 | Television power supply circuit and television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218352552U (en) |
-
2022
- 2022-08-03 CN CN202222040508.7U patent/CN218352552U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109905619B (en) | Display device | |
| CN109905042B (en) | Power supply equipment and power supply circuit thereof | |
| CN100492852C (en) | Wireless type zero quiescent dissipation power supply controller | |
| CN110071630A (en) | A kind of conversion circuit and implementation method of seamless switching decompression and straight-through operating mode | |
| CN113741261A (en) | Power-on and power-off control circuit and signal output device | |
| CN102437724B (en) | AC-DC (alternating current-direct current) chip, system and high-voltage startup control circuit of system | |
| CN215300494U (en) | Step-down DCDC converter and under-voltage protection circuit thereof | |
| CN201426083Y (en) | Sawtooth signal control circuit and switch power supply | |
| CN218352552U (en) | Television power supply circuit and television | |
| CN210444178U (en) | Power control circuit and electrical equipment | |
| CN110048607A (en) | A kind of conversion circuit and implementation method of seamless switching boosting and straight-through operating mode | |
| CN218352553U (en) | Television power supply circuit and television | |
| CN115528790A (en) | Power supply circuit and electronic device | |
| CN102625186B (en) | STB (Set Top Box) and system for controlling real standby of STB | |
| CN115347633A (en) | Charging and discharging management method, device and system for earphone cabin | |
| CN101976946B (en) | Circuit and method for transforming negative voltage between direct currents | |
| CN103683892A (en) | Switching power supply and controller thereof | |
| CN209526556U (en) | Power supply switch circuit | |
| CN107707230B (en) | Intelligent control joint control power switch | |
| CN203706002U (en) | Circuit for reducing standby power consumption | |
| CN111048055A (en) | Display and display standby power consumption control method | |
| CN218040813U (en) | Microgrid power generation and energy storage system | |
| CN219372285U (en) | Voltage conversion circuit | |
| CN204442521U (en) | Standby data protection circuit and television set | |
| CN110535332A (en) | A kind of driving circuit of leggy charge pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |