CN207367089U - A kind of control circuit of main board power supply device and electric appliance - Google Patents
A kind of control circuit of main board power supply device and electric appliance Download PDFInfo
- Publication number
- CN207367089U CN207367089U CN201721486688.4U CN201721486688U CN207367089U CN 207367089 U CN207367089 U CN 207367089U CN 201721486688 U CN201721486688 U CN 201721486688U CN 207367089 U CN207367089 U CN 207367089U
- Authority
- CN
- China
- Prior art keywords
- switch pipe
- circuit
- power supply
- connection
- voltage output
- 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
Abstract
The utility model discloses the control circuit of a kind of main board power supply device and electric appliance；The main board power supply device includes power supply platelet and the standby voltage output terminal, start voltage output end and the on-off circuit that are arranged on the power supply platelet；The on-off circuit includes being used for the triggering end and the first connecting pin for turning on when the triggering end is high level and second connection end for receiving high-level control signal when electric appliance is started shooting；First connecting pin connects the standby voltage output terminal, and the second connection end connects the start voltage output end；The standby voltage output terminal is used for the standby load being arranged on by the connection of the first cable on mainboard, and the start that the start voltage output end is used to be arranged on mainboard by the connection of the second cable loads.Implement the utility model embodiment, the harness between power supply platelet and mainboard can be reduced, optimize circuit connection space, reduce cost.
Description
Technical field
The utility model embodiment is related to field of circuit technology, more particularly to the control of a kind of main board power supply device and electric appliance
Circuit.
Background technology
In the prior art, the control circuit partly with the electric appliance of start and standby two kinds of working statuses includes mainboard and company
Platelet is connect, mainboard is realized using cable and connects the connection between platelet.Usually, connect on platelet and be provided with start voltage
Output terminal, it is its power supply that the start load on mainboard is connected by cable.Standby voltage output terminal is additionally provided with, passes through cable
Standby load on line connection mainboard is powered for it.Start voltage output end exports supply voltage, standby shape under open state
Output voltage is 0 under state, start load is only powered and is worked under open state；And standby voltage output terminal is then being opened
Machine state and holding state all export supply voltage always, standby load is all powered and is worked under two states.
Because the electric current that start load needs is larger, as electric current needed for backlight in television set and display driver circuit is long-range
In electric current needed for the remote control signal receiving group as standby load, generally require a plurality of cable realize mainboard start load and
Connection between platelet start voltage output end.And harness excessively not only occupied space and can also be brought the problems such as cost increase.
Utility model content
The utility model embodiment provides a kind of control circuit of main board power supply device and electric appliance, to realize that reduction power supply is small
Harness between plate and mainboard, optimizes circuit connection space, reduces cost.
In a first aspect, the utility model embodiment provides a kind of main board power supply device, including power supply platelet and it is arranged on institute
State standby voltage output terminal, start voltage output end and the on-off circuit on power supply platelet；
The on-off circuit include be used for receive electric appliance start when high-level control signal triggering end and for
The first connecting pin and second connection end that the triggering end turns on when being high level；
First connecting pin connects the standby voltage output terminal, and the second connection end connection start voltage is defeated
Outlet；The standby voltage output terminal is used for the standby load being arranged on by the connection of the first cable on mainboard, described
The start that start voltage output end is used to be arranged on mainboard by the connection of the second cable loads.
Second aspect, the utility model embodiment provide a kind of control circuit of electric appliance, including mainboard, the first cable,
The main board power supply device that second cable and the utility model any embodiment provide；The mainboard includes standby load and start
Load；
The first end of first cable connects the standby voltage output terminal of the main board power supply device, second end connection
The standby load；
The first end of second cable connects the start voltage output end of the main board power supply device, second end connection
The start load.
The utility model embodiment, by increasing between the standby voltage output terminal of power supply platelet and start voltage output end
Add on-off circuit, and the on-off circuit is triggered conducting when electric appliance is started shooting so that under open state, standby voltage output terminal and
Start shooting voltage output end connection, the electric current of start voltage output end output can branch to the output of standby voltage end, using treating electromechanics
The portion of electrical current of the cable transmission start voltage output end output of output terminal connection mainboard is pressed, so as to reduce harness, is solved existing
There is technology harness excessively not only occupied space and the problem of increase cost, realize optimization circuit connection space, reduce the effect of cost
Fruit.
Brief description of the drawings
Fig. 1 is the structure diagram for the main board power supply device that the utility model embodiment one provides；
Fig. 2 is the structure diagram for the main board power supply device that the utility model embodiment two provides；
Fig. 3 is the structure diagram of the control circuit for the electric appliance that the utility model embodiment three provides.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.Further need exist for
It is bright, for the ease of description, part relevant with the utility model rather than entire infrastructure are illustrate only in attached drawing.
Embodiment one
Referring to Fig. 1, Fig. 1 be the utility model embodiment one provide main board power supply device structure diagram, the mainboard
Power supply unit include power supply platelet (not indicated in figure), and be arranged on power supply platelet on standby voltage output terminal 5V_STB,
Start voltage output end 5V_M and on-off circuit 10.
On-off circuit 10 receives the triggering end A of high-level control signal when electric appliance is started shooting and for tactile including being used for
The first connecting pin and second connection end that originator A is turned on when being high level；First connecting pin connection standby voltage output terminal 5V_
STB, second connection end connection start voltage output end 5V_M；Standby voltage output terminal 5V_STB is used to pass through the first cable
Connection is arranged on the standby load on mainboard, and start voltage output end 5V_M is used to be arranged on by the connection of the second cable
Start load on mainboard.
Usually, standby voltage output terminal 5V_STB powers for standby load, is, for example, the control of infrared remote control receiver
Module is powered, and the electric current of output is smaller；And the voltage output end 5V_M that starts shooting for example, is arranged on mainboard for start load supplying
Display driver circuit, chip or backlight power supply module power supply, the electric current of output is much larger than standby voltage output terminal 5V_STB
The electric current of output.In the prior art, to complete transformation task, the cable that start voltage output end 5V_M needs to connect is standby
Voltage output end 5V_STB needs twice or more of the cable connected, and standby voltage output terminal 5V_STB needs what is connected
The magnitude of current that carries of cable has redundancy.Using the technical solution of the present embodiment, according to foregoing circuit structure, treated in electric appliance
During machine, the voltage output end 5V_M and standby voltage output terminal 5V_STB that starts shooting is disconnected, and passes through the first cable and the second electricity respectively
Start load and standby load on cable connection mainboard, at this time, start voltage output end 5V_M voltages are 0, and standby voltage is defeated
It is default supply voltage to go out terminal voltage, generally 5V, is powered for standby load, both are independent of each other.When electric appliance is started shooting, open
Machine voltage output end 5V_M and standby voltage output terminal 5V_STB conductings, voltage is supply voltage 5V, passes through the first cable
Start load and the standby load on mainboard are connected with the second cable, the total current that two ports are got is diverted to first
On cable and the second cable, then the cable of standby voltage output terminal 5V_STB connections can bearing part start voltage output
Hold the output current of 5V_M so that the cable quantity that start voltage output end 5V_M is connected can be reduced.Electric current is transferred to
When on mainboard, according to standby load and the load impedance characteristic of start load, motherboard circuit can distribute the electricity transmitted automatically
Stream, while be start load and standby load power supply.
Preferably, using FFC (Flexible Flat Cable, flexible flat cable) as mainboard and power supply platelet it
Between cable.The utility model embodiment can reduce the cabling quantity on FFC.
In order to realize above-mentioned technique effect, on-off circuit can be realized using a variety of specific embodiments.Simply, switch electricity
Road is normal-open type relay.Normally opened relay is when triggering end is not charged, two connecting terminal (corresponding first connecting pins and second
Connecting pin) it is to disconnect, when triggering end is powered, two connecting terminal connection conductings.
In conclusion the technical solution of the present embodiment, passes through the standby voltage output terminal and start voltage in power supply platelet
Increase on-off circuit between output terminal, and the on-off circuit is triggered conducting when electric appliance is started shooting so that standby under open state
Voltage output end is connected with start voltage output end, and it is defeated that the electric current that start voltage output end exports can branch to standby voltage end
Go out, using the portion of electrical current of the cable transmission start voltage output end output of standby voltage output terminal connection mainboard, so as to subtract
Few harness, solves the problems, such as prior art harness excessively not only occupied space and increase cost, realizes and optimize circuit connection space,
Reduce the effect of cost.
Embodiment two
Referring to Fig. 2, Fig. 2 is the structure diagram for the main board power supply device that the utility model embodiment two provides.The mainboard
The specific embodiment of the on-off circuit 10 of power supply unit is different from embodiment one, other features refer to corresponding in embodiment one
Technical characteristic.Specifically, which includes power supply platelet (not indicated in figure), and is arranged on power supply platelet
Standby voltage output terminal 5V_STB, start voltage output end 5V_M and on-off circuit 10.On-off circuit 10 includes being used to receive
The connections of the triggering end A of high-level control signal when electric appliance is started shooting and first for being turned on when triggering end A is high level
End and second connection end；First connecting pin connects standby voltage output terminal 5V_STB, second connection end connection start voltage
Output terminal 5V_M；Standby voltage output terminal 5V_STB is used to be arranged on by the connection of the first cable standby negative on mainboard
Carry, the start that start voltage output end 5V_M is used to be arranged on mainboard by the connection of the second cable loads.
In the present embodiment, on-off circuit includes first switch pipe Q1 and second switch pipe Q2；First switch pipe Q1 is control
Hold the switching tube to be turned on during high level, such as NPN type triode or N-type metal-oxide-semiconductor etc.；The control terminal connection of first switch pipe Q1
The triggering end of on-off circuit 10, the first connecting pin of the first end connecting valve circuit 10 of first switch pipe Q1, first switch pipe
The second end ground connection of Q1；Second switch pipe Q2 is the switching tube turned on when control terminal is low level, such as PNP type triode or P
Type metal-oxide-semiconductor；The first end of the control terminal connection first switch pipe Q1 of second switch pipe Q2, the first end connection of second switch pipe Q2
First connecting pin of on-off circuit 10, the second connection end of the second end connecting valve circuit 10 of second switch pipe Q2.According to upper
Circuit setting is stated, first switch pipe Q1 is turned on when electric appliance is started shooting, and dragging down the control terminal voltage of second switch pipe Q2 makes second to open
Close pipe Q2 conductings；In electric appliance standby, first switch pipe is not turned on, and the control terminal voltage of second switch pipe Q2 is defeated by standby voltage
Outlet 5V_STB is drawn high, so second switch pipe Q2 is also not turned on, realizes the function of on-off circuit 10
It should be noted that the switching tube in the utility model, refers to partly leading for triode, metal-oxide-semiconductor or other three ports for control
Body switching device derives from device, in different application scenarios, the power consumption of visual actual circuit, cost, driving power and
Reasonable selection and setting are required with the drive control component parameter matching of switching tube etc..On-off circuit 10 is constructed using switching tube,
Compared to relay is directly used, its cost is lower, and occupied space is also small, and power attenuation very little.
Preferably, first switch pipe Q1 is NPN type triode；The control terminal of first switch pipe Q1 is NPN type triode
The first end of base stage B, first switch pipe Q1 are the collector C of NPN type triode, and the second end of first switch pipe Q1 is NPN tri-
The emitter E of pole pipe.Second switch pipe Q2 is p-type metal-oxide-semiconductor；The control terminal of second switch pipe Q2 is the grid G of p-type metal-oxide-semiconductor, the
The first end of two switching tube Q2 is the source S of p-type metal-oxide-semiconductor, and the second end of second switch pipe Q2 is the drain D of p-type metal-oxide-semiconductor.
Further, on-off circuit 10 further includes first resistor R1 and second resistance R2；First resistor R1 is connected to first
Between the control terminal of switching tube Q1 and the triggering end of on-off circuit 10；The first end connection first switch pipe Q1's of second resistance R2
Control terminal, second end ground connection.First resistor R1 and second resistance R2 is by the triggering end signal partial pressure of on-off circuit 10, with dividing electricity
Voltage-controlled first switch pipe Q1 processed, sets first resistor R1 and second resistance R2 to be easy to by adjusting resistance value adjustment first switch pipe
The control terminal voltage of Q1.
Further, on-off circuit 10 further includes 3rd resistor R3 and the 4th resistance R4；3rd resistor R3 is connected to first
Between the first end of switching tube Q1 and the first connecting pin of on-off circuit 10；4th resistance R4 is connected to the control of second switch pipe Q2
Between the first end of end processed and first switch pipe Q1.The setting of 3rd resistor R3 and the 4th resistance R4 are conveniently adjusted circuit parameter.
Further, on-off circuit 10 further includes the first capacitance C1, the second capacitance C2 and the 3rd capacitance C3；First capacitance C1
First end connection second switch pipe Q2 first end, the control terminal of second end connection second switch pipe Q2；Second capacitance C2's
The second end of first end connection second switch pipe Q2, the control terminal of second end connection second switch pipe Q2；The of 3rd capacitance C3
The second connection end of one end connecting valve circuit 10, second end ground connection.Above-mentioned capacitance can be used for filtering.
The technical solution of the present embodiment, by between the standby voltage output terminal of power supply platelet and start voltage output end
Increase on-off circuit, and the on-off circuit is triggered conducting when electric appliance is started shooting so that under open state, standby voltage output terminal
Connected with start voltage output end, the electric current of start voltage output end output can branch to the output of standby voltage end, and utilization is standby
The portion of electrical current of the cable transmission start voltage output end output of voltage output end connection mainboard, so as to reduce harness, solves
Prior art harness excessively not only occupied space and increase cost the problem of, realize optimization circuit connection space, reduce cost
Effect.
Embodiment three
Referring to Fig. 3, Fig. 3 be the utility model embodiment three provide electric appliance control circuit structure diagram, the control
Circuit processed includes the main board power supply that mainboard 200, the first cable 300, the second cable 400 and any embodiment of the present invention provide
Device 100；Wherein, mainboard 200 includes standby load and start loads.
The standby voltage output terminal of the first end connection main board power supply device 100 of first cable 300, second end connection master
Standby load on plate 200；The start voltage output end of the first end connection main board power supply device 100 of second cable 400, the
Start load on two ends connection mainboard 200.
Preferably, the first cable 300 and the second cable 400 are flexible flat cable.Flexible flat cable (FFC)
Wire count and spacing can be arbitrarily selected, is more convenient line, is adapted to do transmission cable between pcb board and pcb board and be used,
It is adapted to the utility model to be improved harness problem.
It should be noted that alleged first cable and the second cable in the utility model, it is thus understood that independent two
Group cable, does not limit the first cable or the cabling quantity included by the second cable, can be according to actual output electricity of starting shooting
Stream demand is preferably arranged to complete the minimum number of transmission electric current task.
The control circuit of electric appliance provided in this embodiment includes the main board power supply device that any embodiment of the present invention provides, tool
Standby corresponding technique effect.
It should be noted that without conflicting with each other, those skilled in the art will can retouch in this specification
The different embodiments or example and different embodiments stated or exemplary feature are combined and combine.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.
Note that it above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from the scope of protection of the utility model.Therefore, although passing through above example
The utility model is described in further detail, but the utility model is not limited only to above example, is not departing from
In the case that the utility model is conceived, other more equivalent embodiments can also be included, and the scope of the utility model is by appended
Right determine.
Claims (10)
1. a kind of main board power supply device, it is characterised in that treat electromechanics on platelet with described power is arranged on including power supply platelet
Press output terminal, start voltage output end and on-off circuit；
The on-off circuit receives the triggering end of high-level control signal when electric appliance is started shooting and for described including being used for
The first connecting pin and second connection end that triggering end turns on when being high level；
First connecting pin connects the standby voltage output terminal, and the second connection end connects the start voltage output
End；The standby voltage output terminal is used for the standby load being arranged on by the connection of the first cable on mainboard, described to open
The start that machine voltage output end is used to be arranged on mainboard by the connection of the second cable loads.
2. main board power supply device as claimed in claim 1, it is characterised in that the on-off circuit is normal-open type relay.
3. main board power supply device as claimed in claim 1, it is characterised in that the on-off circuit includes first switch pipe and the
Two switching tubes；
The first switch pipe is the switching tube turned on when control terminal is high level；The control terminal connection institute of the first switch pipe
State the triggering end of on-off circuit, the first end of the first switch pipe connects the first connecting pin of the on-off circuit, and described the
The second end ground connection of one switching tube；
The second switch pipe is the switching tube turned on when control terminal is low level；The control terminal connection institute of the second switch pipe
The first end of first switch pipe is stated, the first end of the second switch pipe connects the first connecting pin of the on-off circuit, described
The second end of second switch pipe connects the second connection end of the on-off circuit.
4. main board power supply device as claimed in claim 3, it is characterised in that the on-off circuit further includes first resistor and
Two resistance；
The first resistor is connected between the control terminal of the first switch pipe and the triggering end of the on-off circuit；Described
The control terminal of the first end connection first switch pipe of two resistance, second end ground connection.
5. main board power supply device as claimed in claim 4, it is characterised in that the on-off circuit further includes 3rd resistor and
Four resistance；
The 3rd resistor is connected between the first end of the first switch pipe and the first connecting pin of the on-off circuit；Institute
The 4th resistance is stated to be connected between the control terminal of the second switch pipe and the first end of the first switch pipe.
6. main board power supply device as claimed in claim 5, it is characterised in that the on-off circuit further includes the first capacitance,
Two capacitances and the 3rd capacitance；
The first end of first capacitance connects the first end of the second switch pipe, and second end connects the second switch pipe
Control terminal；
The first end of second capacitance connects the second end of the second switch pipe, and second end connects the second switch pipe
Control terminal；
The first end of 3rd capacitance connects the second connection end of the on-off circuit, second end ground connection.
7. such as claim 3 to 6 any one of them main board power supply device, it is characterised in that the first switch pipe is NPN type
Triode；
The control terminal of the first switch pipe is the base stage of NPN type triode, and the first end of the first switch pipe is NPN type three
The collector of pole pipe, the second end of the first switch pipe are the emitter of NPN triode.
8. such as claim 3 to 6 any one of them main board power supply device, it is characterised in that the second switch pipe is p-type
Metal-oxide-semiconductor；
The control terminal of the second switch pipe is the grid of p-type metal-oxide-semiconductor, and the first end of the second switch pipe is p-type metal-oxide-semiconductor
Source electrode, the second end of the second switch pipe are the drain electrode of p-type metal-oxide-semiconductor.
9. a kind of control circuit of electric appliance, it is characterised in that including mainboard, the first cable, the second cable and such as right will
Seek 1 to 8 any one of them main board power supply device；The mainboard includes standby load and start loads；
The first end of first cable connects the standby voltage output terminal of the main board power supply device, described in second end connection
Standby load；
The first end of second cable connects the start voltage output end of the main board power supply device, described in second end connection
Start load.
10. the control circuit of electric appliance as claimed in claim 9, it is characterised in that first cable and the second cable
It is flexible flat cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486688.4U CN207367089U (en) | 2017-11-09 | 2017-11-09 | A kind of control circuit of main board power supply device and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486688.4U CN207367089U (en) | 2017-11-09 | 2017-11-09 | A kind of control circuit of main board power supply device and electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207367089U true CN207367089U (en) | 2018-05-15 |
Family
ID=62343609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721486688.4U Active CN207367089U (en) | 2017-11-09 | 2017-11-09 | A kind of control circuit of main board power supply device and electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207367089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861167A (en) * | 2018-12-28 | 2019-06-07 | 深圳市九洲电器有限公司 | Interface short circuit protection circuit and set-top box |
| CN111583868A (en) * | 2019-02-18 | 2020-08-25 | 华为技术有限公司 | Terminal equipment based on display driving circuit |
-
2017
- 2017-11-09 CN CN201721486688.4U patent/CN207367089U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861167A (en) * | 2018-12-28 | 2019-06-07 | 深圳市九洲电器有限公司 | Interface short circuit protection circuit and set-top box |
| CN111583868A (en) * | 2019-02-18 | 2020-08-25 | 华为技术有限公司 | Terminal equipment based on display driving circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104917016B (en) | Rechargeable hub | |
| US20110304205A1 (en) | Power outlet apparatus with multiple sockets detection, and detection method thereof | |
| CN207367089U (en) | A kind of control circuit of main board power supply device and electric appliance | |
| CN106125697A (en) | Touch controller with display screen and control method | |
| CN107171560B (en) | A kind of ON-OFF control circuit | |
| CN101626201B (en) | Switch power supply circuit | |
| CN105468093A (en) | Electronic apparatus | |
| CN203368124U (en) | Power source switching circuit and Dock device | |
| CN208325119U (en) | A kind of bus control circuit, mobile unit and onboard system | |
| CN207588554U (en) | Power supply cabinet | |
| CN203734748U (en) | Standby circuit of TV set and TV set | |
| CN204442329U (en) | A kind of mechanical switch remote-control module and intelligent switch | |
| CN109739801A (en) | A kind of serial port level chance-over circuit between MCU chip and SOC chip | |
| CN105633942B (en) | A kind of low-voltage direct home intelligent electric power system | |
| CN204595520U (en) | A kind of signal deteching circuit | |
| CN210575339U (en) | Multichannel electromagnet driving board card | |
| CN203813139U (en) | Wireless intelligent power stripe | |
| CN209056923U (en) | Switching power circuit | |
| CN203191861U (en) | Frequency automatic setting system of delinter seed feeding mechanism | |
| CN205158347U (en) | A on -vehicle wireless data terminal of AUX interface and power supply interface is provided | |
| CN205793164U (en) | ON-OFF control circuit and bluetooth earphone for bluetooth earphone | |
| CN106888396B (en) | Separated television control circuit and method and separated television | |
| CN204270090U (en) | A kind of electric voltage regulator program control device | |
| CN202565386U (en) | Video device and circuit controlling SCART interface output voltage | |
| CN216210592U (en) | Cooking utensil's communication circuit and cooking utensil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |