CN110996027A - Standby circuit, method and television - Google Patents
Standby circuit, method and television Download PDFInfo
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- CN110996027A CN110996027A CN201911378025.4A CN201911378025A CN110996027A CN 110996027 A CN110996027 A CN 110996027A CN 201911378025 A CN201911378025 A CN 201911378025A CN 110996027 A CN110996027 A CN 110996027A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/63—Generation or supply of power specially adapted for television receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
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- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The invention discloses a standby circuit, a standby method and a television, wherein the standby circuit comprises a power module, a DC-DC module and a core module which are sequentially connected, and also comprises a switching circuit and a battery circuit; in a standby state, the battery circuit supplies power to the movement module, the movement module generates a power supply standby control signal switching circuit, and the switching circuit cuts off alternating current input to the power supply module. According to the invention, the switching circuit is arranged between the input end of the power module and the core module, the battery circuit is arranged to supply power to the core module, and the input alternating current of the power module is switched in the standby state, so that the core module can supply power by low-voltage direct current in the standby state, the power module is prevented from working under high-voltage alternating current for a long time, and the reliability of the product is improved.
Description
Technical Field
The invention relates to the field of televisions, in particular to a standby circuit, a standby method and a television.
Background
With the development of the television industry, at present, many television manufacturers cancel a power switch, and a user only has two states of starting and standby after being electrified. Because the television is not provided with a power switch, the television is in a standby state when not used. However, the television is generally powered by 220V alternating current, the power module is in an intermittent oscillation working state when the television is in standby for a long time, the possibility of fire caused by the fact that high-voltage alternating current breaks down and short circuits of various components exists, and in the standby state, people are not on the spot and are prone to causing fire disasters.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a standby circuit, a standby method, and a television, in which a switching circuit is disposed between an input terminal of a power module and a core module, and a battery circuit is disposed to supply power to the core module, and an input ac power of the power module is switched in a standby state, so that the core module can be supplied with a low-voltage dc power by the battery circuit in the standby state, thereby preventing the power module from working under a high-voltage ac power for a long time.
In order to achieve the purpose, the invention adopts the following technical scheme:
a standby circuit comprises a power module, a DC-DC module and a machine core module which are connected in sequence, and also comprises a switching circuit and a battery circuit;
in a standby state, the battery circuit supplies power to the movement module, the movement module generates a power supply standby control signal to the switching circuit, and the switching circuit cuts off alternating current input to the power supply module.
The switching circuit comprises a switch unit and a switching unit, wherein in the standby state, the core module generates the power supply standby control signal to the switching unit, and the switching unit controls the switch unit to cut off the alternating current input to the power supply module according to the power supply standby control signal.
The switch unit comprises a relay, one end of the relay normally closed contact is connected with a live wire or a zero line, the other end of the relay normally closed contact is connected with a second input end of the power module, one end of the relay coil is connected with the battery circuit and powered by the battery circuit, and the other end of the relay coil is connected with the switching unit.
The switching unit comprises a first triode, a second triode, a third triode, a fourth triode, a first resistor, a second resistor and a third resistor;
the collecting electrode of first triode is connected with the other end of relay coil, the base of first triode is connected with the one end of first resistance, the one end of second resistance, the collecting electrode of second triode and the collecting electrode of fourth triode, the other end of first resistance is connected with the one end of battery circuit and third resistance, the base of second triode is connected with the collecting electrode of third diode and the other end of third resistance, the base of third triode with the core module is connected, the base of fourth triode and battery circuit connection, the projecting pole of first triode the other end of second resistance the projecting pole of second triode, the projecting pole of third triode and the projecting pole of fourth triode all ground connection.
The battery circuit comprises a charging control circuit, a battery and a first diode, wherein the charging control circuit controls the switching circuit to access alternating current to transmit the alternating current to the power module when the electric quantity of the battery is lower than a first preset value, and the power module is started to charge the battery; when the battery power is higher than a second preset value, the charging control circuit controls the switching circuit to disconnect the alternating current input into the power module and controls the battery to supply power to the core module and the relay coil; the charging control circuit is connected with the power module, the battery, the base of the fourth triode and the input end of the first diode, and the output end of the first diode is connected with the core module to provide standby voltage for the core module.
A standby method comprising the steps of;
the standby power supply battery circuit supplies power to the movement module in a standby state;
the machine core module generates a power supply standby control signal in the standby state;
and after receiving the power supply standby control signal, the switching circuit cuts off the alternating current input to the power supply module.
The step that the battery circuit supplies power for the movement module in the standby state comprises the following steps:
when the electric quantity of the battery is lower than a first preset value, the charging control circuit controls the switching circuit to access alternating current and transmit the alternating current to the power supply module, and the power supply module is started to charge the battery;
and when the battery power is higher than a second preset value, the charging control circuit controls the switching circuit to disconnect the alternating current input into the power supply module and controls the battery to supply power to the movement module and the relay coil.
The step of cutting off the alternating current input to the power module after the switching circuit receives the power supply standby control signal comprises the following steps:
the switching unit receives the power supply standby control signal and turns on the switch unit;
the switching unit cuts off the input alternating current of the power supply module.
The first preset value is 10%, and the second preset value is 95%.
A television set is characterized by comprising a television set body and the standby circuit arranged in the television set body.
Compared with the prior art, the standby circuit, the standby method and the television provided by the invention have the advantages that the standby circuit comprises the power module, the DC-DC module and the core module which are sequentially connected, and is characterized by further comprising a switching circuit and a battery circuit; in a standby state, the battery circuit supplies power to the movement module, the movement module generates a power supply standby control signal switching circuit, and the switching circuit cuts off alternating current input to the power supply module. According to the invention, the switching circuit is arranged between the input end of the power supply module and the core module, the battery circuit is arranged to supply power to the core module, and the input alternating current of the power supply module is switched in the standby state, so that the battery module can supply power by low-voltage direct current in the standby state, the power supply module is prevented from working under high-voltage alternating current in an intermittent oscillation working mode and state for a long time, and the reliability of products is improved.
Drawings
FIG. 1 is a functional block diagram of a prior art architecture provided by the present invention;
FIG. 2 is a functional block diagram of a standby circuit according to the present invention;
fig. 3 is a circuit diagram of a standby circuit provided in the present invention.
Detailed Description
In view of the problems in the prior art, the present invention provides a standby circuit, a standby method and a television, wherein a switching circuit 400 is disposed between an input terminal of a power module 100 and a core module 300, and a battery circuit 500 is disposed to supply power to the core module 300, so that the input ac power of the power module 100 is switched in a standby state, so that the core module 300 can be supplied with low-voltage dc power in the standby state, and the power module 100 is prevented from working under high-voltage ac power for a long time.
The embodiments of the present invention are intended to explain technical concepts of the present invention, technical problems to be solved, technical features constituting technical solutions, and technical effects to be brought about in more detail. The embodiments are explained below, but the scope of the present invention is not limited thereto. Further, the technical features of the embodiments described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, in the prior art, 220V ac power enters a power module 100 through a fuse, the power module 100 outputs different voltages to a load when working, wherein one power source outputs 5V _ STB voltage to a core module 300 through a DC-DC module 200, and the voltage supplies power to a part of circuits of the core module 300 that need to work in a standby mode when the power module 100 is in the standby mode. In a standby state, the core module 300 outputs a power standby control signal STB _ OUT to turn off power supply to other standby circuit power supplies which do not work in the core module 300, and the power standby control signal STB _ OUT is also input to the power module 100 to enable the power module 100 to work in an intermittent oscillation mode, the power output is in a light load, only a DC-DC circuit works, and 5V _ STB voltage is output to part of circuits of the core module 300 to work, so that an electric appliance is in a standby working state. When the mobile module 300 enters the power-on state from the standby state, it outputs a power standby control signal STB _ OUT, controls the switching circuit 400 to make the ac power enter the power module 100 through the relay, and makes the disconnected power supply be turned on to supply power through the power standby control signal STB _ OUT of the other mobile module. The power module 100 transitions from the intermittent oscillation mode to the normal operating output voltage.
In a standby state, the power module 100 is in an ac power supply state in an intermittent oscillation working mode for a long time, and once a power device fails, a short circuit and heating of a circuit are caused, and people are not on the spot, thereby causing a fire. Therefore, there is a need to provide a solution that ameliorates and reduces the above-mentioned problems.
In summary, referring to fig. 2, the present invention provides a standby circuit, which includes a power module 100, a DC-DC module 200, a core module 300, a switching circuit 400, and a battery circuit 500, which are connected in sequence; in a standby state, the battery circuit 500 supplies power to the movement module 300, the movement module 300 generates a power standby control signal STB _ OUT to the switching circuit 400, and the switching circuit 400 cuts off the ac power input to the power module 100.
In specific implementation, in this embodiment, the power module 100 is connected to the zero line N and the live line L, and 220V ac power is accessed from the zero line N and the live line L; the power module 100 is further connected to the battery circuit 500, the DC-DC module 200, and the movement module 300, and supplies power to the battery circuit 500, the DC-DC module 200, and the movement module 300. The DC-DC module 200 and the battery circuit 500 are both connected to the core module 300 to supply power to the core module 300 in a power-on state or a standby state. The core module 300 is further connected to the power module 100 and the switching circuit 400, and sends a power standby control signal STB _ OUT to the power module 100 and the switching circuit 400 in a standby state. The switching circuit 400 is disposed between the input live line L (or N line) of the power module 100 and the core module 300, and receives a power standby control signal STB _ OUT of the core module 300 in a standby state to cut off the live line L (or N line) line, so that the input ac of the power module 100 is disconnected, and the core module 300 supplies power through the battery circuit 500. The battery circuit 500 is further connected to the switching circuit 400, and when the battery 502 is low in power, the switching circuit 400 is controlled to connect the live line L (or N line) to the power module 100, so that the power module 100 starts to operate to supply power to the battery circuit 500.
Specifically, referring to fig. 2, the switching circuit 400 includes a switch unit 402 and a switching unit 401, in a standby state, the core module 300 generates a power standby control signal STB _ OUT to the switching unit 401, and the switching unit 401 controls the switch unit 402 to cut off the power supply of the power module 100 according to the power standby control signal STB _ OUT.
In this embodiment, the switching unit 401 is connected to the battery circuit 500 and the core, the switch unit 402 is connected to the switching unit 401, the power module 100, the battery circuit 500 and the live line L (or the neutral line N), and the battery circuit 500 provides a voltage of 5V _ STB for the core module 300 and the switch unit. When the television is in a standby state, the movement generates a power standby control signal STB _ OUT and sends the power standby control signal STB _ OUT to the switching unit 401, the switching unit 401 turns on the switching unit 402, and the switching unit 402 cuts off the connection between the live wire L (or the N wire) and the power module 100, so that the power module 100 is powered off. At this time, the movement module 300 is supplied with a voltage of 5V _ STB by the battery circuit 500 through the first diode, and maintains a standby state.
Further, referring to fig. 3, the switch unit 402 includes a relay K1, one end of the relay normally-closed contact is connected to the live line L (or N line), the other end of the relay normally-closed contact is connected to the second input end of the power supply, one end of the relay coil is connected to the battery circuit 500, the battery circuit provides a 5V _ STB voltage, and the other end of the relay coil is connected to the switching unit 401.
The switching unit 401 includes a first triode, a second triode V2, a third triode V3, a fourth triode V4, a first resistor R1, a second resistor R2 and a third resistor R3;
the collector of the first triode V1 is connected to the other end of the relay coil, the base of the first triode V1 is connected to one end of the first resistor R1, one end of the second resistor R2, the collector of the second triode V2 and the collector of the fourth triode V4, the other end of the first resistor R1 is connected to one end of the battery circuit 500 and one end of the third resistor R3, the base of the second triode V2 is connected to the collector of the third diode and the other end of the third resistor R3, the base of the third triode V3 is connected to the movement module 300, the base of the fourth triode V4 is connected to the battery circuit 500, and the emitter of the first triode V1, the other end of the second resistor R2, the emitter of the second triode V2, the emitter of the third triode V3 and the emitter of the fourth triode V4 are all grounded.
In the embodiment, two ends of the normally closed contact of the relay are respectively connected to the live line L (or N line) of the 220V alternating current and the power module 100; when the television is in a standby state, the base of the third triode V3 is connected to the high-level power supply standby control signal STB _ OUT, the third triode V3 is conducted, so that the base of the second triode V2 is pulled to a low level, and the second triode V2 is cut off; at this time, the first resistor R1 is connected to the 5V _ STB voltage provided by the battery circuit, the base of the first triode V1 is at a high level, and the first triode V1 is turned on; at this time, the battery circuit, the relay coil, the first triode V1 and the ground terminal form a loop, the relay coil is electrified to attract the armature, the normally closed contact of the relay is disconnected, and the power module 100 stops working when power is off. Meanwhile, the movement module 300 is powered by the battery circuit 500 through the first diode D1, so as to maintain the standby state and prevent the power module 100 from being powered by ac power for a long time in the standby state.
The battery circuit 500 includes a charging control circuit 501, a battery 502 and a first diode D1, when the electric quantity of the battery 502 is lower than a first preset value, the charging control circuit 501 controls the switching circuit 400 to access an alternating current to transmit the alternating current to the power module 100, and the power module 100 is turned on to charge the battery 502; when the electric quantity of the battery 502 is higher than a second preset value, the charging control circuit 501 controls the switching circuit 400 to cut off the alternating current input to the power module 100, and the battery 502 supplies power to the movement module 300 and the relay coil; the charging control circuit 501 is connected to the power module 100, the battery 502, the base of the fourth transistor V4, and the input terminal of the first diode D1, and the output terminal of the first diode D1 is connected to the 5V _ STB voltage input terminal of the movement module 300.
In specific implementation, in this embodiment, when the electric quantity of the battery 502 is lower than the first preset value, the charging control circuit 501 outputs the first battery 502 charging control signal GB with a high level, so that the fourth transistor V4 is turned on, the base voltage of the first transistor V1 is pulled low, and the first transistor V1 is turned off. At this time, because the first triode V1 is cut off, the loops of the battery circuit, the relay coil, the triode and the grounding terminal are disconnected, and the relay coil is powered off; after the relay K1 is powered down, the armature resets, the normally closed contact of the relay is closed, so that the power module 100 is connected to 220V alternating current, the television works in an intermittent oscillation mode of the power supply in a standby state, the battery 502 is charged through the charging control circuit 501, and meanwhile, the DC-DC module 200 outputs 5V _ STB voltage to supply power for the movement module 300.
When the electric quantity of the battery 502 is higher than the second preset value, the charging control circuit 501 outputs a low-level charging control signal GB of the second battery 502, so that the fourth transistor V4 is turned off, the first transistor V1 is turned on again, the relay coil is powered on again, the armature is attracted, and the power module 100 is powered off.
When the television is in a normal power-on state, the power module 100 charges the battery 502 through the charging control circuit 501, the voltage output by the control circuit of the battery 502 is lower than the output voltage of the DC-DC module after passing through the first diode D1, and the DC-DC module 200 supplies power to the movement module at this time.
In particular, in this embodiment, the first preset value is 10%, and the second preset value is 95%. Of course, it should be noted that the first preset value and the second preset value in this embodiment are only used as examples, the first preset value may also be set to be 5%, 15% or other values, and the second preset value may also be set to be 85%, 90%, 100%, and the like, which is not limited herein. The charge control circuit 501 is prior art and will not be described in detail herein.
In summary, the standby circuit in the invention stops the power module 100 when the television is in the standby state, thereby avoiding the power module 100 from working under the high-voltage alternating current for a long time and reducing the occurrence probability of safety accidents; compared with the previous circuit, there is no power consumption of the power module 100 in the intermittent oscillation mode in the standby state. Compared with the prior art, the standby energy consumption is reduced by about two thirds, and the purpose of reducing the power consumption is achieved.
Based on the standby circuit, the invention also provides a standby method, which comprises the following steps;
s100, the battery circuit 500 supplies power to the movement module 300 in a standby state;
s200, the movement module 300 generates a power supply standby control signal STB _ OUT in a standby state;
s300, after receiving the power standby control signal STB _ OUT, the switching circuit 400 cuts off the ac power input to the power module 100.
In this embodiment, the switching circuit 400 is disposed between the input live line L (or N line) of the power module 100 and the core module 300, and receives the power standby control signal STB _ OUT of the core module 300 in the standby state to cut off the line of the live line L (or N line), so as to disconnect the input ac of the power module 100, and enable the core module 300 to supply power through the battery circuit 500. The battery circuit 500 is further connected to the switching circuit 400, and when the battery 502 is low in power, the switching circuit 400 is controlled to connect the live line L (or N line) to the power module 100, so that the power module 100 starts to operate to supply power to the battery circuit 500.
The step of S100 includes:
s101, when the electric quantity of the battery 502 is lower than a first preset value, the charging control circuit 501 controls the switching circuit 400 to access ac power and transmit the ac power to the power module 100, and the power module 100 is turned on to charge the battery 502;
s102, when the electric quantity of the battery 502 is higher than the second preset value, the charging control circuit 501 controls the switching circuit 400 to disconnect the ac power input to the power module 100, and controls the battery 502 to supply power to the movement module 300 and the relay coil.
In specific implementation, in this embodiment, when the electric quantity of the battery 502 is lower than the first preset value, the charging control circuit 501 outputs a high-level charging control signal to the first battery 502, so that the fourth transistor V4 is turned on, the base voltage of the first transistor V1 is pulled low, and the first transistor V1 is turned off. At this time, because the first triode V1 is cut off, the loops of the battery circuit, the relay coil, the triode and the grounding terminal are disconnected, and the relay coil is powered off; after the relay K1 loses power, the armature resets, and the relay normally closed contact is closed for 220V alternating current is connected to power module 100, and the power normally works, charges for battery 502, and simultaneously, battery 502 output voltage supplies power for core module 300 through first diode D1.
When the electric quantity of the battery 502 is higher than the second preset value, the charging control circuit 501 outputs a low-level charging control signal of the second battery 502, so that the fourth triode V4 is cut off, the first triode V1 is turned on again, the relay coil is powered on again, the armature is attracted, and the power module 100 is powered off. Specifically, the first preset value is 10%, and the second preset value is 95%.
The step of S300 includes:
s301, the switching unit 401 receives the power standby control signal STB _ OUT, and turns on the switch unit 402;
s302 the switching unit 402 cuts off the input ac power of the power module 100.
The switching unit 401 receives a high-level power standby control signal STB _ OUT sent by the core module 300, the switching unit 402 forms a loop conduction to cut off a live wire L (or an N wire) at the input end of the power module 100, the power module 100 is powered off, the power module 100 is prevented from working under high-voltage alternating current for a long time in a standby state, and the occurrence probability of safety accidents is reduced; compared with the previous circuit, there is no power consumption of the power module 100 in the intermittent oscillation mode in the standby state. Compared with the prior art, the standby energy consumption is reduced by about two thirds, and the purpose of reducing the power consumption is achieved.
Based on the standby circuit, the invention also provides a television, which comprises a television body and the standby circuit arranged in the television body. Since the standby circuit has been described in detail above, it is not described in detail here.
In summary, the standby circuit, the method and the television provided by the invention include a power module, a DC-DC module and a core module, which are connected in sequence, and are characterized by further including a switching circuit and a battery circuit; in a standby state, the battery circuit supplies power to the movement module, the movement module generates a power supply standby control signal STB _ OUT switching circuit, and the switching circuit cuts off alternating current input to the power supply module. According to the invention, the switching circuit is arranged between the input end of the power module and the core module, the battery circuit is arranged to supply power to the core module, and the input alternating current of the power module is switched in the standby state, so that the core module can supply power by low-voltage direct current in the standby state, the power module is prevented from working under high-voltage alternating current for a long time in the standby state, and the reliability of the product is improved.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. A standby circuit comprises a power module, a DC-DC module and a machine core module which are connected in sequence, and is characterized by also comprising a switching circuit and a battery circuit;
in a standby state, the battery circuit supplies power to the movement module, the movement module generates a power supply standby control signal to the switching circuit, and the switching circuit cuts off alternating current input to the power supply module.
2. The standby circuit according to claim 1, wherein the switching circuit includes a switching unit and a switching unit, and in the standby state, the core module generates the power standby control signal to the switching unit, and the switching unit controls the switching unit to cut off the ac power input to the power module according to the power standby control signal.
3. The standby circuit according to claim 2, wherein the switching unit comprises a relay, one end of the relay normally closed contact is connected to the live line or the neutral line, the other end of the relay normally closed contact is connected to the second input terminal of the power module, one end of the relay coil is connected to the battery circuit and is powered by the battery circuit, and the other end of the relay coil is connected to the switching unit.
4. The standby circuit according to claim 3, wherein the switching unit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a first resistor, a second resistor, and a third resistor;
the collecting electrode of first triode is connected with the other end of relay coil, the base of first triode is connected with the one end of first resistance, the one end of second resistance, the collecting electrode of second triode and the collecting electrode of fourth triode, the other end of first resistance is connected with the one end of battery circuit and third resistance, the base of second triode is connected with the collecting electrode of third diode and the other end of third resistance, the base of third triode with the core module is connected, the base of fourth triode and battery circuit connection, the projecting pole of first triode the other end of second resistance the projecting pole of second triode, the projecting pole of third triode and the projecting pole of fourth triode all ground connection.
5. The standby circuit according to claim 4, wherein the battery circuit comprises a charging control circuit, a battery and a first diode, the charging control circuit controls the switching circuit to switch in the alternating current to the power module when the battery level is lower than a first preset value, and the power module is turned on to charge the battery; when the battery power is higher than a second preset value, the charging control circuit controls the switching circuit to disconnect the alternating current input into the power module and controls the battery to supply power to the core module and the relay coil; the charging control circuit is connected with the power module, the battery, the base of the fourth triode and the input end of the first diode, and the output end of the first diode is connected with the core module and provides standby voltage for the core module.
6. A standby method, comprising the steps of;
the standby power supply battery circuit supplies power to the movement module in a standby state;
the machine core module generates a power supply standby control signal in the standby state;
and after receiving the power supply standby control signal, the switching circuit cuts off the alternating current input to the power supply module.
7. The standby method according to claim 6, wherein the step of supplying power to the movement module by the battery circuit in the standby state comprises:
when the electric quantity of the battery is lower than a first preset value, the charging control circuit controls the switching circuit to access alternating current and transmit the alternating current to the power supply module, and the power supply module is started to charge the battery;
and when the battery power is higher than a second preset value, the charging control circuit controls the switching circuit to disconnect the alternating current input into the power supply module and controls the battery to supply power to the movement module and the relay coil.
8. The standby method according to claim 6, wherein the step of cutting off the AC power input to the power module after the switching circuit receives the power standby control signal comprises:
the switching unit receives the power supply standby control signal and turns on the switch unit;
the switching unit cuts off the input alternating current of the power supply module.
9. The standby method according to claim 7, wherein the first preset value is 10% and the second preset value is 95%.
10. A television set, characterized by comprising a television set body and the standby circuit of any one of claims 1 to 5 arranged in the television set body.
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| CN201911378025.4A CN110996027B (en) | 2019-12-27 | 2019-12-27 | Standby circuit, method and television |
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| CN201911378025.4A CN110996027B (en) | 2019-12-27 | 2019-12-27 | Standby circuit, method and television |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737088A (en) * | 2020-12-25 | 2021-04-30 | 广州长嘉电子有限公司 | Television power supply method and device with AC and DC double power supplies and television |
| CN113612949A (en) * | 2021-08-25 | 2021-11-05 | 深圳康佳电子科技有限公司 | Direct-current power supply switching circuit and television |
| CN113641234A (en) * | 2021-07-21 | 2021-11-12 | 深圳拓邦股份有限公司 | Power supply switching method, circuit, device and electrical equipment |
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