CN209329961U - A kind of power control circuit and electronic equipment - Google Patents
A kind of power control circuit and electronic equipment Download PDFInfo
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- CN209329961U CN209329961U CN201821796693.XU CN201821796693U CN209329961U CN 209329961 U CN209329961 U CN 209329961U CN 201821796693 U CN201821796693 U CN 201821796693U CN 209329961 U CN209329961 U CN 209329961U
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Abstract
A kind of power control circuit and electronic equipment are provided in the utility model embodiment；A self-locking power control circuit being made of first switch circuit, second switch circuit, key circuit and output control terminal mouth, after pressing the touch-switch in one-touch circuit, power supply changes on off operating mode, and after unclamping touch-switch, power supply is also able to maintain the on off operating mode after changing.The power control circuit and electronic equipment provided in the utility model embodiment can be used for changing on/off state and be conducive to the micromation of product size.
Description
Technical field
The utility model relates to the technical field of self-locking power control circuit, in particular to a kind of power control circuit and electricity
Sub- equipment.
Background technique
Power supply is that each electrical component persistently provides electric energy in circuit, there is lasting electric current in holding circuit, and circuit
It usually not at every moment needs to be powered, therefore, often by the way that switch is arranged in circuit come by way of controlling on/off, to make
Circuit can be powered or power off as needed.In existing electronic product, generally by the electricity of mechanical switch control electric appliance
Make electrical work whether the on-off of source.
During realizing the utility model, inventor's discovery is above, and at least there are the following problems in the related technology: existing
The usual volume of mechanical switch it is larger, be easy to cause maloperation, be unfavorable for the micromation of product size, and more easily aging damage
It is bad.
Utility model content
In view of the above drawbacks of the prior art, the purpose of the utility model is to provide a kind of power control circuits and electronics to set
It is standby.
The purpose of this utility model is achieved by the following technical solution:
In order to solve the above technical problems, in a first aspect, the utility model provides a kind of power control circuit, applied to electronics
Equipment, the electronic equipment include power supply, the power control circuit include: first switch circuit, second switch circuit,
Key circuit and output control terminal mouth；
The input terminal of the first switch circuit is respectively connected to the control of the power supply and the second switch circuit
End processed, the output end ground connection of the first switch circuit, the control terminal of the first switch circuit are connected to the second switch
The input terminal of circuit；
The input terminal of the second switch circuit is respectively connected to the control of the power supply and the first switch circuit
End processed, the output end ground connection of the second switch circuit, the control terminal of the second switch circuit are respectively connected to described first
The input terminal of switching circuit and the output control terminal mouth；
The input terminal of the key circuit is respectively connected to the input terminal of the power supply and the second switch circuit,
The output end of the key circuit is grounded；
The low and high level of the output control terminal mouth controls the on-off state of the electronic equipment.
Optionally, the first switch circuit includes the first triode, and the base stage of first triode is described first
The input terminal of switching circuit, the output end of the extremely described first switch circuit of transmitting of first triode, the described 1st
The control terminal of the extremely described first switch circuit of the current collection of pole pipe；
The second switch circuit includes the second triode, and the base stage of second triode is the second switch circuit
Input terminal, the output end of the extremely described second switch circuit of transmitting of second triode, the collection of second triode
Electrode is the control terminal of the first switch circuit；
First triode and second triode are NPN type triode.
Optionally, the first switch circuit further includes first capacitor, and one end of the first capacitor is respectively connected to institute
State the base stage of the first triode and the control terminal of the second switch circuit, other end ground connection；
The second switch circuit further includes the second capacitor, and one end of second capacitor is respectively connected to the described 2nd 3
The input terminal of the base stage of pole pipe and the key circuit, other end ground connection；
The key circuit includes third capacitor, and one end of the third capacitor is respectively connected to the second switch circuit
Input terminal and control terminal, the other end ground connection；
The capacitance of the first capacitor is greater than the capacitance of second capacitor；
Wherein, when beginning to turn on the power supply, the first capacitor and second capacitor starts to charge and institute
It is first fully charged to state the second capacitor, second triode ON, the first triode cut-off；When the key circuit first time
When connection, the third capacitor charging, the second triode cut-off；When the key circuit is connected for the second time, described
The electric discharge of three capacitors, second triode ON.
Optionally, the second switch circuit further includes first resistor and 3rd resistor, first resistor one end connection
To the power supply, the other end is connected to the collector of first triode, and described 3rd resistor one end is connected to described
The collector of first triode, the other end are connected to the base stage of second triode；
Wherein, when connecting the power supply, the power supply passes through the first resistor and the 3rd resistor
It is afterwards second capacitor charging.
Optionally, the first switch circuit further includes second resistance and the 4th resistance, second resistance one end connection
To the power supply, the other end is connected to the collector of second triode, and described 4th resistance one end is connected to described
The collector of second triode, the other end are connected to the base stage of first triode,
Wherein, when connecting the power supply, the power supply passes through the second resistance and the 4th resistance
It charges afterwards for the first capacitor.
Optionally, the resistance value of the first resistor and the second resistance is equal, the 3rd resistor and the described 4th
The resistance value of resistance is equal.
Optionally, the key circuit further includes the 5th resistance, and described 5th resistance one end is connected to the two or three pole
The collector of pipe, the other end are connected to the third capacitor,
Wherein, when the key circuit first switches on, the power supply passes through the second resistance, the described 5th
It is the third capacitor charging after resistance.
Optionally, the key circuit further includes the 6th resistance and touch-switch, and described 6th resistance one end is connected to institute
Third capacitor is stated, the other end is connected to the touch-switch, and the touch-switch other end is connected to second triode
Base stage,
Wherein, when the key circuit is connected for the second time, the third capacitor by the 6th resistance, described touch
It discharges after the base stage of switch and second triode, second triode ON.
Optionally, the first switch circuit further includes the 7th resistance, and one end of the 7th resistance is connected to described
The base stage of one triode, the other end are connected to the emitter of first triode, and the 7th resistance is pull down resistor.
In order to solve the above technical problems, second aspect, the utility model provides a kind of electronic equipment, comprising: operating circuit,
Power supply chip and power supply；And
The power supply chip low and high level is controlled to control the claims 1-9 of the electronic equipment machine and appoint
Power control circuit described in one；
The power supply chip is operating circuit power supply for output supply voltage, and the power supply is for being described
Operating circuit, the power supply chip and power control circuit power supply.
Compared with prior art, the utility model has the beneficial effects that being in contrast to the prior art, the utility model
A kind of power control circuit and electronic equipment are provided in embodiment；One is formed by touch-switch, triode, capacitor and resistance
Self-locking power control circuit, after pressing a touch-switch, power supply changes on off operating mode, (opens after release after unclamping touch-switch
Shutdown is opened), power supply is also able to maintain the on off operating mode after changing, and touch-switch is a kind of electronic component of small volume.This
The power control circuit and electronic equipment provided in utility model embodiment can be used for changing on/off state and be conducive to product
The micromation of size.
Detailed description of the invention
It is illustrated in one or more embodiments by the picture in corresponding attached drawing, these are exemplary
Illustrating not constitute the restriction to embodiment, the element in attached drawing with same reference numbers label is expressed as similar element,
Unless there are special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a kind of schematic block circuit diagram of the power control circuit provided in the utility model embodiment one；
Fig. 2 is a kind of electrical block diagram of the power control circuit provided in the utility model embodiment one；
Fig. 3 is the schematic block circuit diagram of a kind of electronic equipment provided in the utility model embodiment two.
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These are all within the protection scope of the present invention.
Embodiment one
Referring to Figure 1 and Fig. 2, a kind of power control circuit 1 is provided in the embodiments of the present invention, is applied to electronics
Equipment, the electronic equipment include power supply VCC, which is characterized in that the power control circuit 1 includes: first switch electricity
Road 11, second switch circuit 12, key circuit 13 and output control terminal mouth 14.
The input terminal 111 of the first switch circuit 11 is respectively connected to the power supply VCC and the second switch
The output end 112 of the control terminal 123 of circuit 12, the first switch circuit 11 is grounded, the control of the first switch circuit 11
End 113 is connected to the input terminal 121 of the second switch circuit 12.
The input terminal 121 of the second switch circuit 12 is respectively connected to the power supply VCC and the first switch
The output end 122 of the control terminal 113 of circuit 11, the second switch circuit 12 is grounded, the control of the second switch circuit 12
End 123 is respectively connected to the input terminal 111 and the output control terminal mouth 14 of the first switch circuit 11.
The input terminal 131 of the key circuit 13 is respectively connected to the power supply VCC and the second switch circuit
The output end 132 of 12 input terminal 121, the key circuit 13 is grounded.
The low and high level of the output control terminal mouth 14 controls the on-off state of the electronic equipment.
Therefore,
When beginning to turn on the power supply VCC, the key circuit 13 is disconnected, and the power supply VCC is acted on
The second switch circuit 12, the second switch circuit 12 are connected, and the control terminal 123 of the second switch circuit 12 is low electricity
It is flat, and then the output control terminal mouth 14 is low level, the electronic equipment is in off-mode；
When the key circuit 13 first switches on, the power supply VCC acts on the first switch circuit 11,
The first switch circuit 11 is connected, and the control terminal 113 of the first switch circuit 11 is low level, and then the second switch
Circuit 12 ends, and the control terminal 123 of the second switch circuit 12 is high level, and the output control terminal mouth 14 is high level,
The electronic equipment is in running order；
When 13 second of connection of key circuit, the input terminal 131 of key circuit 13 is high level, and then described the
The conducting of two switching circuits 12, the output control terminal mouth 14 are low level, and the electronic equipment is in off-mode.
Above-mentioned first switch circuit 11 includes that the base stage of the first triode Q1, the first triode Q1 is described first
The input terminal 111 of switching circuit 11, the output end 12 of the extremely described first switch circuit 11 of transmitting of the first triode Q1,
The control terminal 113 of the extremely described first switch circuit 11 of the current collection of the first triode Q1.The first switch circuit 11 is also
Including first capacitor C1, one end of the first capacitor C1 is respectively connected to the base stage and described second of the first triode Q1
The control terminal 123 of switching circuit 12, other end ground connection.
Above-mentioned second switch circuit 12 includes that the base stage of the second triode Q2, the second triode Q2 is described second
The input terminal 121 of switching circuit 12, the output end of the extremely described second switch circuit 12 of transmitting of the second triode Q2
122, the control terminal 123 of the extremely described second switch circuit 11 of the current collection of the second triode Q2.The second switch circuit
12 further include the second capacitor C2, and one end of the second capacitor C2 is respectively connected to the base stage of the second triode Q2 and described
The input terminal 131 of key circuit 13, other end ground connection.
The first triode Q1 and the second triode Q2 is NPN type triode.
Above-mentioned key circuit 13 includes third capacitor C3, and one end of the third capacitor C3 is respectively connected to described second and opens
The input terminal 121 and control terminal 123 on powered-down road 12, other end ground connection.
Above-mentioned second switch circuit 12 further includes first resistor R1,3rd resistor R3.One end of the first resistor R1
It is connected to the power supply VCC, the other end is connected to the collector of the first triode Q1.The one of the 3rd resistor R3
End is connected to the collector of the first triode Q1, and the other end is connected to the base stage of the second triode Q2.
Therefore, when connecting the power supply VCC, the power supply VCC passes through the first resistor R1 and described
It is the second capacitor C2 charging after 3rd resistor R3.
Above-mentioned first switch circuit 11 further includes second resistance R2, the 4th resistance R4, the 7th resistance R7.Second electricity
One end of resistance R2 is connected to the power supply VCC, and the other end is connected to the collector of the second triode Q2.Described 4th
One end of resistance R4 is connected to the collector of the second triode Q2, and the other end is connected to the base of the first triode Q1
Pole.One end of the 7th resistance R7 is connected to the base stage of the first triode Q1, and the other end is connected to the one or three pole
The emitter of pipe Q1, the 7th resistance R7 are pull down resistor.
Therefore, when connecting the power supply VCC, the power supply VCC passes through the second resistance R2 and described
It is the first capacitor C1 charging after 4th resistance R4.
Above-mentioned key circuit 13 further includes touch-switch K1, the 5th resistance R5, the 6th resistance R6.The 5th resistance R5's
One end is connected to the collector of the second triode Q2, and the other end is connected to the third capacitor C3.The 6th resistance R6
One end be connected to the third capacitor C3, the other end is connected to the touch-switch K1, the touch-switch other end connection
To the base stage of second triode.
Therefore, when the key circuit 13 first switches on, the power supply VCC by the second resistance R2,
It is the third capacitor C3 charging after the 5th resistance R5,
Or, after the power supply VCC is by the first resistor R1, the 3rd resistor R3 and the 6th resistance R6
For third capacitor C3 charging.
When 13 second of connection of key circuit, the third capacitor C3 passes through the 6th resistance R6, described light
It discharges after touching the base stage of switch K1 and the second triode Q2, the second triode Q2 conducting.
Since the resistance value of the first resistor R1 and the second resistance R2 are equal, the 3rd resistor R3 and described
The resistance value of four resistance R4 is equal.And the capacitance of the first capacitor C1 is greater than the capacitance of the second capacitor C2.
Therefore, when beginning to turn on the power supply VCC, the first capacitor C1 and the second capacitor C2 start to fill
The electric and described second capacitor C2 is first fully charged, the second triode Q2 conducting, the first triode Q1 cut-off；When described
When key circuit 13 first switches on, the third capacitor C3 charging, the second triode Q2 cut-off；When the key circuit
When 13 second of connection, the third capacitor C3 electric discharge, the second triode Q2 conducting.
Structure design through this embodiment, the power control circuit 1 of the utility model can be used for each class of electronic devices
In, the switching on and shutting down switched to controlling electronic devices for power supply in controlling electronic devices.The power supply control of the present embodiment
Circuit 1 processed includes first switch circuit 11, second switch circuit 12, key circuit 13 and output control terminal mouth 14.This power supply control
Circuit 1 processed is using the electronic component of common small size, and conducive to the micromation of electronic equipment, and structure is simple, is conducive to production.
Embodiment two
Referring to Figure 1 and Fig. 3, a kind of electronic equipment 2 is provided in the embodiments of the present invention, comprising: operating circuit
22, power supply chip 21 and power supply VCC；And control 21 low and high level of power supply chip is to control the electronic equipment
Power control circuit 1 described in above-described embodiment one of 2 switching on and shutting down.
The power supply chip 21 is the operating circuit 22 power supply for output supply voltage, and the power supply VCC is used
It powers in for the operating circuit 22, the power supply chip 21 and the power control circuit 1, and the power supply VCC connects
It is connected to the power control circuit 1 and the power supply chip 21.The operating circuit 22, the power supply chip 21 and the power supply
Control circuit 1 is all grounded.
The electronic equipment 2 further includes the 8th resistance R8, the output control terminal of power control circuit 1 described in the 8th resistance R8
Mouthfuls 14, by being connected to the control terminal EN of the power supply chip 21 after the 8th resistance R8, pass through and change the power supply control
The low and high level state of the output control terminal mouth 14 of circuit 1 controls the low and high level shape of the control terminal EN of the power supply chip 21
State, to control power supply chip 21, whether output supply voltage is the operating circuit 22 power supply, thus the control electricity
The on-off state of sub- equipment 2.
Therefore, the power control circuit 1 in one in conjunction with the embodiments,
When beginning to turn on power supply VCC, first switch circuit 11 ends, and second switch circuit 12 is connected, key electricity
Road 13 disconnects.Since output control terminal mouth 14 is connected to the control terminal 123 of second switch circuit, second switch circuit 12 is connected
When, the control terminal 123 of the second switch circuit 12 is low level, and then the output control terminal mouth 14 is low level, described
The control terminal EN of power supply chip 21 is also low level, so the power supply chip 21 not output supply voltage to the operating circuit
22, the electronic equipment 2 is in off-mode；
When the key circuit 13 first switches on, the power supply VCC acts on the first switch circuit 11,
The first switch circuit 11 is connected, and the second switch circuit 12 ends, and the control terminal 123 of the second switch circuit 12 is
High level, and then the output control terminal mouth 14 is high level, the control terminal EN of the power supply chip 21 is also high level, in turn
21 output supply voltage of power supply chip to the operating circuit 22, the electronic equipment 2 is in open state；
When 13 second of connection of key circuit, the input terminal of the key circuit 13 is high level, first switch
Circuit 11 ends, and the second switch circuit 12 is connected, and the control terminal 123 of the second switch circuit 12 is low level, in turn
The output control terminal mouth 14 is low level, and the control terminal EN of the power supply chip 21 is also low level, and then the power supply core
Output supply voltage to the operating circuit 22, the electronic equipment 2 is not in off-mode to piece 21.
The electronic equipment 2 of structure design through this embodiment, the utility model can be by changing power control circuit 1
The low and high level state of output control terminal mouth 14 changes the output voltage state of power supply chip 21, only passes through a lesser electricity
Subcomponent (touch-switch) controls the working condition of 22 input voltage of operating circuit, this 2 structure of electronic equipment is simple and is conducive to
The micromation of product size.
A kind of power control circuit and electronic equipment are provided in the utility model embodiment；By touch-switch, triode,
Capacitor and resistance form a self-locking power control circuit, and after pressing a touch-switch, power supply changes on off operating mode, unclamp light
It (switchs and disconnects after release) after touching switch, power supply is also able to maintain the on off operating mode after changing, and touch-switch is a kind of volume
Lesser electronic component.It is logical that the power control circuit and electronic equipment provided in the utility model embodiment can be used for changing power supply
Disconnected state and the micromation for being conducive to product size.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above embodiments or different embodiments, and
There are many other variations of the different aspect of the utility model as described above, for simplicity, they are not mentioned in details
For；Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should be managed
Solution: it can still modify to technical solution documented in foregoing embodiments, or to wherein regional development and technology feature
It is equivalently replaced；And these are modified or replaceed, each reality in it does not separate the essence of the corresponding technical solution the utility model
Apply the range of the technical solution of example.
Claims (10)
1. a kind of power control circuit is applied to electronic equipment, the electronic equipment includes power supply, which is characterized in that institute
Stating power control circuit includes: first switch circuit, second switch circuit, key circuit and output control terminal mouth；
The input terminal of the first switch circuit is respectively connected to the control terminal of the power supply and the second switch circuit,
The output end of the first switch circuit is grounded, and the control terminal of the first switch circuit is connected to the second switch circuit
Input terminal；
The input terminal of the second switch circuit is respectively connected to the control terminal of the power supply and the first switch circuit,
The output end of the second switch circuit is grounded, and the control terminal of the second switch circuit is respectively connected to the first switch electricity
The input terminal on road and the output control terminal mouth；
The input terminal of the key circuit is respectively connected to the input terminal of the power supply and the second switch circuit, described
The output end of key circuit is grounded；
The low and high level of the output control terminal mouth controls the on-off state of the electronic equipment.
2. power control circuit according to claim 1, which is characterized in that
The first switch circuit includes the first triode, and the base stage of first triode is the defeated of the first switch circuit
Enter end, the output end of the extremely described first switch circuit of transmitting of first triode, the collector of first triode
For the control terminal of the first switch circuit；
The second switch circuit includes the second triode, and the base stage of second triode is the defeated of the second switch circuit
Enter end, the output end of the extremely described second switch circuit of transmitting of second triode, the collector of second triode
For the control terminal of the first switch circuit；
First triode and second triode are NPN type triode.
3. power control circuit according to claim 2, which is characterized in that
The first switch circuit further includes first capacitor, and one end of the first capacitor is respectively connected to first triode
Base stage and the second switch circuit control terminal, the other end ground connection；
The second switch circuit further includes the second capacitor, and one end of second capacitor is respectively connected to second triode
Base stage and the key circuit input terminal, the other end ground connection；
The key circuit includes third capacitor, and one end of the third capacitor is respectively connected to the defeated of the second switch circuit
Enter end and control terminal, other end ground connection；
The capacitance of the first capacitor is greater than the capacitance of second capacitor；
Wherein, when beginning to turn on the power supply, the first capacitor and second capacitor are started to charge and described
Two capacitors are first fully charged, second triode ON, the first triode cut-off；When the key circuit first switches on
When, the third capacitor charging, the second triode cut-off；When the key circuit is connected for the second time, the third electricity
Discharge capacitor, second triode ON.
4. power control circuit according to claim 3, which is characterized in that
The second switch circuit further includes first resistor and 3rd resistor, and described first resistor one end is connected to the power supply electricity
Source, the other end are connected to the collector of first triode, and described 3rd resistor one end is connected to first triode
Collector, the other end are connected to the base stage of second triode；
Wherein, when connecting the power supply, the power supply by being after the first resistor and the 3rd resistor
Second capacitor charging.
5. power control circuit according to claim 4, which is characterized in that
The first switch circuit further includes second resistance and the 4th resistance, and described second resistance one end is connected to the power supply electricity
Source, the other end are connected to the collector of second triode, and described 4th resistance one end is connected to second triode
Collector, the other end are connected to the base stage of first triode,
Wherein, when connecting the power supply, the power supply by being after the second resistance and the 4th resistance
The first capacitor charging.
6. power control circuit according to claim 5, which is characterized in that
The resistance value of the first resistor and the second resistance is equal, the resistance value of the 3rd resistor and the 4th resistance
It is equal.
7. power control circuit according to claim 5, which is characterized in that
The key circuit further includes the 5th resistance, and described 5th resistance one end is connected to the collector of second triode,
The other end is connected to the third capacitor,
Wherein, when the key circuit first switches on, the power supply passes through the second resistance, the 5th resistance
It is afterwards the third capacitor charging.
8. power control circuit according to claim 3, which is characterized in that
The key circuit further includes the 6th resistance and touch-switch, and described 6th resistance one end is connected to the third capacitor,
The other end is connected to the touch-switch, and the touch-switch other end is connected to the base stage of second triode,
Wherein, when the key circuit is connected for the second time, the third capacitor passes through the 6th resistance, the touch-switch
It discharges with the base stage of second triode, second triode ON.
9. power control circuit according to claim 5, which is characterized in that
The first switch circuit further includes the 7th resistance, and one end of the 7th resistance is connected to the base of first triode
Pole, the other end are connected to the emitter of first triode, and the 7th resistance is pull down resistor.
10. a kind of electronic equipment characterized by comprising
Operating circuit, power supply chip and power supply；And
The power supply chip low and high level is controlled to control described in the claim any one of 1-9 of the electronic equipment machine
Power control circuit；
The power supply chip is operating circuit power supply for output supply voltage, and the power supply is used to be the work
Circuit, the power supply chip and power control circuit power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821796693.XU CN209329961U (en) | 2018-10-31 | 2018-10-31 | A kind of power control circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821796693.XU CN209329961U (en) | 2018-10-31 | 2018-10-31 | A kind of power control circuit and electronic equipment |
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| Publication Number | Publication Date |
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| CN209329961U true CN209329961U (en) | 2019-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783007A (en) * | 2020-12-23 | 2021-05-11 | 广东美的白色家电技术创新中心有限公司 | Switch control circuit and electronic equipment |
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2018
- 2018-10-31 CN CN201821796693.XU patent/CN209329961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783007A (en) * | 2020-12-23 | 2021-05-11 | 广东美的白色家电技术创新中心有限公司 | Switch control circuit and electronic equipment |
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| GR01 | Patent grant |