CN110213514A - The power supply circuit and separate television of separate television - Google Patents
The power supply circuit and separate television of separate television Download PDFInfo
- Publication number
- CN110213514A CN110213514A CN201910584179.2A CN201910584179A CN110213514A CN 110213514 A CN110213514 A CN 110213514A CN 201910584179 A CN201910584179 A CN 201910584179A CN 110213514 A CN110213514 A CN 110213514A
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- voltage
- circuit
- mainboard
- module
- power supply
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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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
The invention discloses a kind of power supply circuit of separate television and separate television, the power supply circuit of the separate television includes: the voltage transformation module being arranged in the TV box of the separate television, mainboard and the power module for output supply voltage；The mainboard, for sending trigger signal to the voltage transformation module when detecting the standby enabling signal of user's triggering；The voltage transformation module, for the standby voltage for being supplied to the mainboard to be switched to the first operating voltage as display module power supply when receiving the trigger signal；The mainboard is also used to when detecting the connection signal that the display module is persistently sent, and the voltage transformation module display module is made to provide the second operating voltage；When detecting that connection signal disconnects, stop as display module power supply.The present invention can be avoided when user plugs connecting line and generate electric discharge spark phenomenon, protects circuit inner structure, promotes circuit life.
Description
Technical field
The present invention relates to circuit field more particularly to the power supply circuits and separate television of separate television.
Background technique
In current separate television design, usually designed using dual power supply, i.e. the TV box of separate television and display
Screen is powered by two power supplys independently.Two power supplys are needed using the separate television that dual power supply designs when in use
Line, which all accesses alternating current, can use TV, if separate television also needs nearby without enough alternating current ports by inserting
Line plate can be powered to TV box and display screen simultaneously, and this dual power supply design is very complicated.
Therefore, can one of power supply from AC power supply and to another power supply provide burning voltage by way of,
So that separate television, which accesses alternating current by a power supply line, to be run.And it is needed between TV box and display screen in this type of design
Connecting line is wanted to realize the energy transmission between power supply and power supply.And the connecting line between TV box and display screen is carrying out hot insert
During pulling out, be easy to appear electric discharge sparking the phenomenon that, easily damage TV box and display screen internal components, also easily cause compared with
Big security risk.
Summary of the invention
The main purpose of the present invention is to provide a kind of power supply circuit of separate television and separate televisions, it is intended to solve seperated
The connecting line of TV easily causes sparking in hot plug process and there are problems that security risk.
To achieve the goals above, the present invention provides a kind of power supply circuit of separate television, connects for separate television plug
Safe power supply is carried out when wiring, the power supply circuit of the separate television includes:
Voltage transformation module, mainboard and the electricity for output supply voltage in the TV box of the separate television are set
Source module；The voltage transformation module is connect with the power module and the mainboard, the voltage transformation module and the master
Plate also passes through connecting line and the display module of separate television connects；
The mainboard, for sending trigger signal to the voltage when detecting the standby enabling signal of user's triggering
Conversion module；
The voltage transformation module, for the standby voltage of the mainboard will to be supplied to when receiving the trigger signal
It is switched to the first operating voltage, and is display module power supply by the mainboard；
The mainboard is also used to convert the voltage into letter when detecting the connection signal that the display module is persistently sent
Number it is persistently sent to the voltage transformation module, so that the voltage transformation module is persistently receiving the voltage conversion signal
When for the display module provide the second operating voltage greater than first operating voltage；Detecting connection signal disconnection
When, stop sending the voltage conversion signal to the voltage transformation module, so that voltage transformation module stopping is described
Display module power supply.
Optionally, the power supply circuit of the separate television further includes connecting with the voltage transformation module and the mainboard
First discharge circuit；
The mainboard is also used to when detecting that connection signal disconnects, and the first discharge circuit of Xiang Suoshu sends discharge signal；
First discharge circuit, for being put to the voltage transformation module when receiving the discharge signal
Electricity.
Optionally, first discharge circuit includes discharge resistance, the first divider resistance, the second divider resistance, the first electricity
Resistance, field-effect tube, triode and diode；
One end of the discharge resistance is connect as the input terminal of first discharge circuit with the voltage transformation module,
The other end of the discharge resistance is connect with the source electrode of the field-effect tube, the grounded drain of the field-effect tube；Described first
The first end of divider resistance connects high level, the first end of the second end of first divider resistance and second divider resistance
And the grid connection of the field-effect tube, the second end ground connection of second divider resistance, the grid of the field-effect tube is also
It is connect with the collector of the triode, the emitter ground connection of the triode, the base stage of the triode passes through described first
Resistance is connected with the cathode of the diode, the anode of the diode as first discharge circuit control terminal with it is described
Mainboard connection.
Optionally, the power supply circuit of the separate television further includes being arranged in the display module, with the connection
Line connection the second discharge circuit, second discharge circuit be used for the connecting line disconnect when, to the display module into
Row electric discharge.
Optionally, the voltage transformation module includes standby voltage module, the standby voltage module and the mainboard and
The power module connection, for providing standby voltage for the mainboard.
Optionally, the voltage transformation module further includes first voltage conversion circuit and first voltage switching circuit, described
First voltage switching circuit is connect with the mainboard, the standby voltage module and the first voltage conversion circuit, described
First voltage conversion circuit is also connect with the mainboard；
The first voltage switching circuit will be described standby for when receiving the trigger signal that the mainboard is sent
The standby voltage that voltage module is supplied to the mainboard is switched to that the first voltage conversion circuit is supplied to the mainboard
One operating voltage.
Optionally, the voltage transformation module further includes second voltage conversion circuit and second voltage switching circuit, described
Second voltage switching circuit is connect with the mainboard, and the second voltage conversion circuit is put with the power module and described first
Electric circuit connection；
The second voltage switching circuit, in the voltage conversion signal for persistently receiving the mainboard transmission
When, the second voltage conversion circuit is controlled as the display module, and the electricity that works greater than the second of first operating voltage is provided
Pressure.
Optionally, the power supply circuit of the separate television further includes filter circuit, and the power module passes through the filtering
Circuit is connect with the voltage transformation module.
Optionally, the power supply circuit of the separate television further includes PFC pfc circuit, and the power module is logical
It crosses the filter circuit and the pfc circuit is connect with the voltage transformation module, the pfc circuit is used for the filtered electrical
The rectified voltage of road output carries out PFC.
In addition, to achieve the above object, the present invention also provides a kind of separate television, the separate television includes separate television
Power supply circuit, the power supply circuit of the separate television is configured as the power supply circuit of separate television as described above.
The present invention pulls up the power supply electricity of separate television by setting voltage transformation module, power module and mainboard, in user
Connecting line in road enables mainboard to control voltage transformation module stopping when not receiving the connection signal of display module transmission
Display module is powered, can be powered when user plugs connecting line by detection connection status for display module,
Electric discharge spark phenomenon is generated because of the overtension at connecting line both ends when plugging connecting line so as to avoid user, protection is seperated
The internal structure of the power supply circuit of TV avoids being damaged because discharging sparking, extends the service life of power supply circuit.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the module diagram of one embodiment of power supply circuit of separate television of the present invention；
Fig. 2 is the structural schematic diagram of the first discharge circuit in Fig. 1 embodiment.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 10 | Power module | 22 | Standby voltage module |
| 20 | Voltage transformation module | 231 | First voltage conversion circuit |
| 21 | First discharge circuit | 232 | First voltage switching circuit |
| R | Discharge resistance | 241 | Second voltage conversion circuit |
| R1 | First divider resistance | 242 | Second voltage switching circuit |
| R2 | Second divider resistance | 30 | Mainboard |
| R3 | First resistor | 40 | Connecting line |
| R4 | Second resistance | 50 | Display module |
| C | Capacitor | 51 | Second discharge circuit |
| FET | Field-effect tube | 60 | Filter circuit |
| BJT | Triode | 70 | Pfc circuit |
| D | Diode |
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and should not be understood as referring to
Show or imply its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two " feature can explicitly or implicitly include at least one of the features.In addition, the technical solution between each embodiment can
It to be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution occurs
Conflicting or cannot achieve when, will be understood that the combination of this technical solution is not present, also not the present invention claims protection model
Within enclosing.
The present invention provides a kind of power supply circuit of separate television, is applied in separate television.
Referring to Fig. 1, in one embodiment, the power supply circuit of separate television includes being arranged in the TV box of separate television
Voltage transformation module 20, mainboard 30 and the power module 10 for output supply voltage.Voltage transformation module 20 and power supply mould
Block 10 and mainboard 30 connect, and voltage transformation module 20 and mainboard 30 pass through pluggable connecting line 40 and separate television
Display module 50 connects.TV box can be attached by connecting line 40 and display module 50, and user can be to connecting line 40
It is plugged.
After power module 10 is electrically connected with city, output phase after power module 10 can be converted by voltage transformation module 20
The voltage answered is powered to mainboard 30, and voltage transformation module 20 is that mainboard 30 provides lower standby voltage, mainboard 30 at this time
The standby enabling signal that standby mode and real-time detection user triggering can be kept after energization, when mainboard 30 detects that user is touched
When the standby enabling signal of hair, trigger signal can be sent to voltage transformation module 20, so that voltage transformation module 20 is receiving
The standby voltage provided for mainboard 30 is switched to the first operating voltage after to trigger signal, it is to be understood that the first work
Voltage is greater than standby voltage.The first operating voltage that mainboard 30 can also convert the voltage into the offer of module 20 is defeated by connecting line 40
It send to display module 50, is powered for display module 50.Mainboard 30 is also continued by connecting line 40 and display module 50
Communication, when display module 50 is in running order, display module 50 can be sent by connecting line 40 to mainboard 30 lasting
Connection signal, mainboard 30 can determine connecting line 40 between display module 50 and mainboard 30 just when receiving connection signal
Often connection, and voltage conversion signal is persistently sent to voltage transformation module 20, so that voltage transformation module 20 is receiving voltage
Conversion signal provides the second operating voltage with backward display module 50, wherein the second operating voltage is greater than the first operating voltage.It is aobvious
Show that module 50 can light backlight by the second operating voltage and be shown.
And after user pulls up connecting line 40, the communication connection between mainboard 30 and display module 50 disconnects, 30 nothing of mainboard
Method detects that display module 50 passes through the connection signal that connecting line 40 is sent, i.e., when connection signal disconnects, mainboard 30 stops to electricity
Press conversion module 20 send voltage conversion signal, voltage transformation module 20 when voltage conversion signal can not be received, stop be
Display module 50 is powered.
The power supply circuit of separate television provided by the present embodiment passes through voltage modulus of conversion after power module 10 is powered
Block 20 is that mainboard 30 provides lower standby voltage, and mainboard 30 is not keyed up at this time but is in standby, in the standby state
User can issue standby enabling signal to mainboard 30 by different Starting mode.Specifically, the Starting mode of user can be with
For triggering remote keying or trigger the external unlatching key of separate television.After user starts, mainboard 30 controls voltage
Standby voltage is upgraded to the first operating voltage by conversion module 20, and is powered when connecting line 40 is connected to display module 50.Display
Module 50 can persistently send connection signal to mainboard 30, so that mainboard 30 controls electricity after receiving the power supply that mainboard 30 provides
Press conversion module 20 for the power supply of display module 50, when the connecting line 40 between mainboard 30 and display module 50 disconnects, mainboard 30
Connection signal can not be received, control voltage transformation module 20 stops powering to display module 50.When separate television is powered, pass through
Voltage is stepped up to be powered for the display module 50 of separate television, prevents from directly providing high voltage and generating electric discharge sparking
Phenomenon stops being powered display module 50 in time when user extracts the exposed connecting line 40 of separate television, with
When connecting line 40 is plugged at family again, the supply voltage of the output of voltage transformation module 20 can be stepped up according to timing, until being
Display module 50 provides high voltage and is powered, so that effectively preventing user generates electric discharge sparking when plugging connecting line 40
Phenomenon protects the internal structure of the power supply circuit of separate television to avoid being damaged because discharging sparking, extends the use of power supply circuit
Service life.
It further, can also include the first discharge circuit 21 in the power supply circuit of separate television with continued reference to Fig. 1, the
One discharge circuit 21 is connect with voltage transformation module 20, and the control terminal of the first discharge circuit 21 is also connect with mainboard 30, mainboard 30
It is detecting connection signal interruption, i.e., when connecting line 40 disconnects, electric discharge letter can be sent to the control terminal of the first discharge circuit 21
Number, the first discharge circuit 21 is receiving when putting signal of the sending of mainboard 30, can discharge voltage transformation module 20.
User can convert the voltage into the charge put aside in module 20 due to high voltage and pass through discharge circuit after pulling up connecting line 40
It is discharged, and after user again plugs connecting line 40, electric discharge spark phenomenon would not occur, separate television is effectively promoted
The safety of internal circuit avoids separate television from breaking down because discharging sparking.
Further, please with reference to Fig. 1 and Fig. 2, the structure of above-mentioned first discharge circuit 21 can be according to actual needs
It is configured, such as above-mentioned first discharge circuit 21 may include discharge resistance R, the first divider resistance R1, the second divider resistance
R2, first resistor R3, field-effect tube FET, triode BJT and diode D；Wherein, one end of discharge resistance R is put as first
The input terminal of circuit 21 is connect with voltage transformation module 20, and the other end of discharge resistance R and the source electrode of field-effect tube FET connect
It connecing, the grounded drain of field-effect tube FET, the first end of the first divider resistance R1 connects high level, and the of the first divider resistance R1
Two ends are connect with the grid of the first end of the second divider resistance R2 and field-effect tube FET, the second end of the second divider resistance R2
Ground connection, for the voltage after making the grid of field-effect tube FET obtain partial pressure.The grid of field-effect tube FET is also with triode BJT's
Collector connection, triode BJT emitter ground connection, triode BJT base stage are connected by the cathode of first resistor R3 and diode D
It connects, the anode of diode D is connect as the control terminal of the first discharge circuit 21 with mainboard 30, so that the electric current as discharge signal
The base stage of triode BJT is flowed to from mainboard 30.When mainboard 30 is used as high level to the output of the base stage of triode BJT, triode
The base voltage of BJT is high voltage, triode BJT conducting, so that the grounded-grid of field-effect tube FET, field-effect tube FET
Cut-off, the first discharge circuit 21 does not work at this time；And mainboard 30 to the base stage of triode BJT export low level when, triode BJT
Cut-off, the voltage on field-effect tube FET grid is after the first divider resistance R1 and the second divider resistance R2 partial pressure at this time
High level, field-effect tube FET is connected at this time, and voltage transformation module 20 is grounded by discharge resistance R, to voltage transformation module 20
It discharges.It should be noted that when above-mentioned mainboard 30 issues discharge signal to the base stage of triode BJT, to triode BJT
Base stage when exporting high level the first discharge circuit 21 do not work, export low level or discharge circuit starting and right when not exporting
Voltage transformation module 20 discharges.The first discharge circuit 21 is controlled by mainboard 30 to discharge, and can pull up company in user
It discharges in time voltage transformation module 20 when wiring 40, so that user be avoided to put when plugging connecting line 40 again
Electric spark phenomenon promotes the safety of the power supply circuit of separate television.
Further, in the above-described embodiments, can also be arranged between the base stage and ground wire of triode BJT by second resistance
The RC parallel circuit that R4 and capacitor C are composed in parallel, with filter high-frequency current signal.
Further, referring to Fig.1, in the power supply circuit of separate television, second can also be arranged in display module 50
Discharge circuit 51, and the second discharge circuit 51 is connect with connecting line 40, so that after connecting line 40 disconnects, the first electric discharge electricity
Road 21 and the second discharge circuit 51 voltage transformation module 20 to 40 both ends of connecting line and display module 50 can be put respectively
Electricity.In this way after user plugs connecting line 40 again, without charge buildup, it is existing all will not to generate electric discharge sparking for 40 both ends of connecting line
As safety when connecting line 40 plugs is effectively promoted.
It should be noted that being also provided with display module mainboard in display module 50, display module mainboard can lead to
It crosses connecting line 40 to be communicated with mainboard 30, and is disconnected in connecting line, display module mainboard sends without normal direction mainboard 30 and connects
When signal, display module mainboard can control the second discharge circuit 51 and discharge display module.
Further, referring to Fig.1, the voltage transformation module 20 in the power supply circuit of separate television further includes standby voltage mould
Block 22, standby voltage module 22 are connect with mainboard 30 and power module 10, for providing lower standby voltage for mainboard 30
So that mainboard 30 keeps standby mode.Standby voltage can be set to 5V.Due to not receiving after separate television powers on
Need to keep standby mode before the enabled instruction of user, by standby voltage module 22 be mainboard 30 provide it is lower to electromechanics
Pressure can keep lower output power while mainboard 30 keeps standby mode, save electric energy.
Further, in the above-described embodiments, the voltage transformation module 20 in the power supply circuit of separate television further includes
One voltage conversion circuit 231 and first voltage switching circuit 232, first voltage switching circuit 232 are connect with mainboard 30, the first electricity
Pressure switching circuit 232 is also connect with standby voltage module 22 and first voltage conversion circuit 231, first voltage conversion circuit 231
Also it is connect with mainboard 30, when mainboard 30 sends trigger signal to first voltage switching circuit 232, first voltage switching circuit
232 power standby voltage module 22 to 30 power switching of mainboard for first voltage conversion circuit 231 to mainboard 30, so that winner
Plate 30 obtains the first operating voltage that first voltage conversion circuit 231 provides.Specifically, the first operating voltage can be set to
20V.Wherein, the first operating voltage is greater than standby voltage.When user opens TV box by triggering enabling signal, mainboard 30 exists
Voltage needed for working condition is greater than standby voltage, therefore mainboard 30 is powered by the control switching of voltage transformation module 20 to provide
Higher first operating voltage enables to mainboard 30 to get corresponding voltage when needing and entering working condition, thus
Mainboard 30 reduces output power when not working, and improves output power in time when mainboard 30 works, and seperated electricity is effectively promoted
Depending on power supply circuit output flexibility, and electric energy can be saved.
Further, in the above-described embodiments, the voltage transformation module 20 in the power supply circuit of separate television further includes
Two voltage conversion circuits 241 and second voltage switching circuit 242, second voltage switching circuit 242 are connect with mainboard 30, the second electricity
Voltage conversion circuit 241 is connect with power module 10 and the first discharge circuit 21.When user starts TV box, mainboard 30 can lead to
Connecting line 40 is crossed to be communicated with display module 50, when the connection signal that display module 50 is sent is received by mainboard 30, table
Show and normally connected between TV box and display module 50, mainboard 30 can send voltage to second voltage switching circuit 242 at this time
Conversion signal, so that second voltage conversion circuit 241 is that display module 50 provides the second operating voltage, the second operating voltage is greater than
First operating voltage.Since display module 50 needs to be powered backlight, to need biggish second operating voltage, therefore
When display module 50 is normally connect with TV box, second voltage switching circuit 242 can control second voltage conversion circuit 241
Second operating voltage needed for display module 50 is provided, so that the display module 50 of separate television can work normally.Specifically,
First operating voltage can be set to 20V and be followed successively by mainboard 30 and display module 50 carries out by above-mentioned voltage transformation module 20
The mode of electricity, is able to ascend the safety and stability of the power supply circuit of separate television, while can also be effectively according to circuit
Actual working state control output power, reduce power consumption.
Further, as shown in Figure 1, the power supply circuit of separate television can also include filter circuit 60, power module 10
It can be connect by filter circuit 60 with voltage transformation module 20, be filtered with the ripple to 10 output voltage of power module,
The AC portion for reducing output voltage, so that the output voltage that voltage transformation module 20 is got is more stable.
Further, in the above-described embodiments, the power supply circuit of separate television can also turn in filter circuit 60 and voltage
It changes the mold and PFC (Power Factor Correction, PFC) circuit is set between block 20, pfc circuit 70 can incite somebody to action
The rectified voltage that filter circuit 60 exports after being rectified carries out PFC, by output voltage and output electric current
Phase is adjusted, so that the phase of voltage and current is close, promotes power supply efficiency.
The present invention also provides a kind of separate television, which includes the power supply circuit of separate television, the separate television
The structure of power supply circuit can refer to above-described embodiment, details are not described herein.Naturally, due to the fission electricity of the present embodiment
Technical solution depending on using the power supply circuit of above-mentioned separate television, therefore the separate television has the power supply of above-mentioned separate television
All beneficial effects of circuit.
The above is only alternative embodiments of the invention, are not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of power supply circuit of separate television characterized by comprising
Voltage transformation module, mainboard and the power supply mould for output supply voltage in the TV box of the separate television are set
Block；The voltage transformation module is connect with the power module and the mainboard, and the voltage transformation module and the mainboard are also
It is connected by the display module of connecting line and separate television；
The mainboard, for sending trigger signal to the voltage and converting when detecting the standby enabling signal of user's triggering
Module；
The voltage transformation module, for switching the standby voltage for being supplied to the mainboard when receiving the trigger signal
It for the first operating voltage, and is that the display module is powered by the mainboard；
The mainboard is also used to convert the voltage into signal when detecting the connection signal that the display module is persistently sent and hold
It is continuous to be sent to the voltage transformation module, so that the voltage transformation module is when persistently receiving the voltage conversion signal
The display module provides the second operating voltage for being greater than first operating voltage；When detecting that connection signal disconnects, stop
The voltage conversion signal is only sent to the voltage transformation module, so that the voltage transformation module stops being the display mould
Block power supply.
2. the power supply circuit of separate television as described in claim 1, which is characterized in that the power supply circuit of the separate television is also
Including the first discharge circuit being connect with the voltage transformation module and the mainboard；
The mainboard is also used to when detecting that connection signal disconnects, and the first discharge circuit of Xiang Suoshu sends discharge signal；
First discharge circuit, for discharging the voltage transformation module when receiving the discharge signal.
3. the power supply circuit of separate television as claimed in claim 2, which is characterized in that first discharge circuit includes electric discharge
Resistance, the first divider resistance, the second divider resistance, first resistor, field-effect tube, triode and diode；
One end of the discharge resistance is connect as the input terminal of first discharge circuit with the voltage transformation module, described
The other end of discharge resistance is connect with the source electrode of the field-effect tube, the grounded drain of the field-effect tube；First partial pressure
The first end of resistance connects high level, the first end of the second end of first divider resistance and second divider resistance and
The grid of the field-effect tube connects, the second end ground connection of second divider resistance, the grid of the field-effect tube also with institute
The collector connection of triode, the emitter ground connection of the triode are stated, the base stage of the triode passes through the first resistor
It is connected with the cathode of the diode, control terminal and the mainboard of the anode of the diode as first discharge circuit
Connection.
4. the power supply circuit of separate television as claimed in claim 2 or claim 3, which is characterized in that the power supply electricity of the separate television
Road further includes being arranged in the display module, the second discharge circuit connecting with the connecting line, the second electric discharge electricity
Road is used to discharge to the display module when the connecting line disconnects.
5. the power supply circuit of separate television as claimed in claim 4, which is characterized in that the voltage transformation module includes standby
Voltage module, the standby voltage module are connect with the mainboard and the power module, standby for providing for the mainboard
Voltage.
6. the power supply circuit of separate television as claimed in claim 5, which is characterized in that the voltage transformation module further includes
One voltage conversion circuit and first voltage switching circuit, the first voltage switching circuit and the mainboard, the standby voltage
Module and first voltage conversion circuit connection, the first voltage conversion circuit are also connect with the mainboard；
The first voltage switching circuit, for when receiving the trigger signal that the mainboard is sent, by the standby voltage
The standby voltage that module is supplied to the mainboard is switched to the first work that the first voltage conversion circuit is supplied to the mainboard
Make voltage.
7. the power supply circuit of separate television as claimed in claim 6, which is characterized in that the voltage transformation module further includes
Two voltage conversion circuits and second voltage switching circuit, the second voltage switching circuit are connect with the mainboard, and described second
Voltage conversion circuit is connect with the power module and first discharge circuit；
The second voltage switching circuit, for controlling when persistently receiving the voltage conversion signal that the mainboard is sent
It makes the second voltage conversion circuit and provides the second operating voltage greater than first operating voltage for the display module.
8. the power supply circuit of the separate television as described in any one of claim 1-3,5-7, which is characterized in that the seperated electricity
Depending on power supply circuit further include filter circuit, the power module is connected by the filter circuit and the voltage transformation module
It connects.
9. the power supply circuit of separate television as claimed in claim 8, which is characterized in that the power supply circuit of the separate television is also
Including PFC pfc circuit, the power module is turned by the filter circuit and the pfc circuit and the voltage
Block connection is changed the mold, the rectified voltage that the pfc circuit is used to export the filter circuit carries out PFC.
10. a kind of separate television, which is characterized in that the separate television includes the power supply circuit of separate television, the seperated electricity
Depending on power supply circuit be configured as the power supply circuit such as the described in any item separate televisions of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584179.2A CN110213514B (en) | 2019-06-28 | 2019-06-28 | Power supply circuit of split television and split television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584179.2A CN110213514B (en) | 2019-06-28 | 2019-06-28 | Power supply circuit of split television and split television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110213514A true CN110213514A (en) | 2019-09-06 |
| CN110213514B CN110213514B (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910584179.2A Active CN110213514B (en) | 2019-06-28 | 2019-06-28 | Power supply circuit of split television and split television |
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| Country | Link |
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| CN (1) | CN110213514B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111479147A (en) * | 2020-04-15 | 2020-07-31 | 康佳集团股份有限公司 | Split television control system and television |
| CN113163242A (en) * | 2020-01-22 | 2021-07-23 | 海信视像科技股份有限公司 | Display device control method and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111479147B (en) * | 2020-04-15 | 2022-05-31 | 康佳集团股份有限公司 | Split television control system and television |
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| CN110213514B (en) | 2021-09-03 |
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