CN109560805A - Single-button electronic switching circuit - Google Patents
Single-button electronic switching circuit Download PDFInfo
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- CN109560805A CN109560805A CN201811630988.4A CN201811630988A CN109560805A CN 109560805 A CN109560805 A CN 109560805A CN 201811630988 A CN201811630988 A CN 201811630988A CN 109560805 A CN109560805 A CN 109560805A
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- 239000003990 capacitor Substances 0.000 claims description 60
- 230000005611 electricity Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
Abstract
Single-button electronic switching circuit of the invention passes through setting output switching element, partial pressure unit, driving switch and output voltage control unit.In actual application process, output switching element is used for output voltage, and the output voltage of power Vcc is exported into external load, is load supplying；Partial pressure unit plays the role of partial pressure, will be in the output voltage input to output voltage control unit of partial pressure unit when user presses driving switch；Output voltage control unit utilizes the output voltage of partial pressure unit, and control output switching element is switched on or off.Mechanical wear is less likely to occur the present invention, and circuit life is long, and touching error incidence is smaller, is switched on or off using electric signal, so that allowing electronic product to stablize enters standby mode.
Description
Technical field
The present invention relates to standby technical fields, more particularly to a kind of single-button electronic switching circuit.
Background technique
Currently, electronic product is the Related product using electric energy as working foundation, wrist-watch, smart phone, electricity are specifically included that
Words, television set, video disc player, video recorder, video camera, radio, radio cassette player, combination sound box, compact disc player, computer, mobile communication
Product etc..Because early production is mainly the therefore named electronic product of basic original part with electron tube.First generation electronic product is with electron tube
Core.Be born first transistor in the world at the end of the 1940s, it is with spies such as small and exquisite, light, power saving, service life length
Point, is soon applied by various countries, in very large range instead of electron tube.The fifties latter stage occurs in the world
One piece of integrated circuit, it on one piece of silicon chip, makes electronic product to smallerization the electronic component integrations such as many transistors
Development.Integrated circuit is rapidly developed from small scale integration to large scale integrated circuit and super large-scale integration, thus
Develop electronic product towards high-effect low consumption, high-precision, high stable, intelligentized direction.
By taking computer as an example, computer all has idle function as other kinds of electronic product, when user temporarily not
When needing using to computer, computer will start idle function, and idle function is advantageous in that when not needing to make in user's short time
It is that can save certain computer power consumption with computer.After existing idle function, usually user press standby button, computer is opened
The type of dynamic idle function, but existing standby button, most standby buttons is mechanical switch, is promoted using mechanical force to electromechanics
Road is switched on or off, but since mechanical switch is due to its more special physical characteristic, mechanical switch is being depressed by the user
When, mechanical switch may be because of position not be reached, i.e., touching has error, causes stand-by circuit not start normally, computer
Idle function can not just be normally entered；In addition, existing mechanical switch, in use for some time, mechanical switch can occur one
Fixed abrasion causes mechanical switch not use normally, i.e. the service life of mechanical switch is shorter；Furthermore mechanical switch is adopted
It is that the mode that physics is touched realizes function, physics is touched when being switched on or off stand-by circuit, can all be generated certain
Time difference causes computer to enter standby mode not within normal time.
Summary of the invention
The purpose of the present invention is overcoming shortcoming in the prior art, provide it is a kind of that mechanical wear is less likely to occur,
Circuit life is long, and touching error incidence is lesser and is switched on or off using electric signal, to allow electronics
Product stablizes the single-button electronic switching circuit for entering standby mode.
The purpose of the present invention is achieved through the following technical solutions:
A kind of single-button electronic switching circuit, comprising:
Output switching element, the input terminal of the output switching element and the output end of power Vcc connect, and the output is opened
The input terminal of the output end and external load that close unit connects；
Partial pressure unit, the input terminal of the partial pressure unit and the output end of power Vcc connect；
Driving switch, one end of the driving switch are connect with the output end of the partial pressure unit；And
Output voltage control unit, the first input end of the output voltage control unit and the output of the partial pressure unit
End connection, the second input terminal of the output voltage control unit are connect with the other end of the driving switch, the output electricity
Pressure control unit feedback input end connect with the output end of the output switching element, the output voltage control unit it is anti-
Feedback output end is connect with the second input terminal of the output voltage control unit, the control output of the output voltage control unit
End is connect with the control signal of the output switching element.
In a wherein embodiment, the output switching element includes first switch tube Q1 and second resistance R2, institute
Input terminal of the emitter of first switch tube Q1 as the output switching element is stated, the collector of the first switch tube Q1 is made
Base stage for the output end of the output switching element, the first switch tube Q1 is defeated as the control of the output switching element
Enter end, one end of the second resistance R2 is connect with the emitter of the first switch tube Q1, and the second resistance R2's is another
End is connect with the base stage of the first switch tube Q1.
In a wherein embodiment, the first switch tube Q1 is PNP switching tube.
In a wherein embodiment, the resistance value of the second resistance R2 is equal to 1M Ω.
In a wherein embodiment, the partial pressure unit includes first resistor R1 and the 5th resistance R5, and described first
Input terminal of the one end of resistance R1 as the partial pressure unit, the other end of the first resistor R1 is as the partial pressure unit
One end of output end, the 5th resistance R5 is connect with the other end of the first resistor R1, and the 5th resistance R5's is another
End ground connection.
In a wherein embodiment, the resistance value of the first resistor R1 is equal to 1.5M Ω, the 5th resistance R5's
Resistance value is equal to 470 Ω.
In a wherein embodiment, the output voltage control unit includes first capacitor C1, the second capacitor C2,
Three resistance R3, the 6th resistance R6, the 7th resistance R7 and second switch Q2, one end of the first capacitor C1 is as the output
The first input end of voltage control unit, the other end of the first capacitor C1 respectively with one end of the 6th resistance R6 and institute
State one end connection of the 7th resistance R7, the other end of the 6th resistance R6 is second defeated as the output voltage control unit
Enter end, the other end ground connection of the 7th resistance R7, one end of the second capacitor C2 and one end of the 6th resistance R6 connect
It connects, the other end of the second capacitor C2 is connect with the other end of the 6th resistance R6, and one end of the 3rd resistor R3 is made
For the feedback input end of the output voltage control unit, the other end of the 3rd resistor R3 is as the output voltage control
The feedback output end of unit, the emitter of the second switch Q2 are connect with one end of the second capacitor C2, and described second
The base stage of switching tube Q2 is connect with the other end of the second capacitor C2, and the collector of the second switch Q2 is as described defeated
The control output end of voltage control unit out.
In a wherein embodiment, the second switch Q2 is NPN switching tube.
In a wherein embodiment, the capacitance of the first capacitor C1 is equal to 0.22uF, the second capacitor C2
Capacitance be equal to 10nF.
In a wherein embodiment, the resistance value of the 3rd resistor R3 is equal to 220k Ω, the 6th resistance R6's
Resistance value is equal to 100k Ω, and the resistance value of the 7th resistance R7 is equal to 4.7k Ω.
The present invention compared with the prior art the advantages of and have the beneficial effect that:
Single-button electronic switching circuit of the invention passes through setting output switching element, partial pressure unit, driving switch and defeated
Voltage control unit out.In actual application process, output switching element is used for output voltage, by the output electricity of power Vcc
Pressure output is load supplying into external load；Partial pressure unit plays the role of partial pressure, when user presses driving switch, will divide
In the output voltage input to output voltage control unit for pressing unit；Output voltage control unit is electric using the output of partial pressure unit
Pressure, control output switching element are switched on or off.Mechanical wear is less likely to occur the present invention, and circuit life is long, touching
It is smaller to touch error incidence, is switched on or off using electric signal, so that allowing electronic product to stablize enters standby mode.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of the single-button electronic switching circuit in one embodiment of the present invention；
Fig. 2 is the circuit theory schematic diagram of the single-button electronic switching circuit in one embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Referring to Fig. 1, a kind of single-button electronic switching circuit 10 includes output switching element 100, partial pressure unit 200, drives
Dynamic switch 300 and output voltage control unit 400.
Referring to Fig. 1, the input terminal of output switching element 100 and the output end of power Vcc are connected, and output switch is single
The output end of member 100 and the input terminal of external load connect.
It is thus desirable to explanation, output switching element 100 is used for output voltage, and the output voltage of power Vcc is exported
It is load supplying into external load.
Referring to Fig. 1, the input terminal of partial pressure unit 200 and the output end of power Vcc are connected.
It is thus desirable to which explanation, partial pressure unit 200 play the role of partial pressure.
Referring to Fig. 1, one end of driving switch 300 is connect with the output end of partial pressure unit 200.
It is thus desirable to explanation, driving switch 300 is single-button electronic switching circuit 10, when user presses for the first time
When driving switch 300, single-button electronic switching circuit 10 starts work, and electronic product is allowed to enter standby mode；As user second
Secondary when pressing driving switch 300, single-button electronic switching circuit 10 does not work, and electronic product is reset to original state.
Referring to Fig. 1, the first input end of output voltage control unit 400 and the output end of partial pressure unit 200 connect
It connects, the second input terminal of output voltage control unit 400 is connect with the other end of driving switch 300, output voltage control unit
400 feedback input end is connect with the output end of output switching element 100, the feedback output end of output voltage control unit 400
It is connect with the second input terminal of output voltage control unit 400, control output end and the output of output voltage control unit 400 are opened
Close the control signal connection of unit 100.
It is thus desirable to which explanation inputs the output voltage of partial pressure unit 200 when user presses driving switch 300
Into output voltage control unit 400；Output voltage control unit 400 controls output and opens using the output voltage of partial pressure unit
Unit 100 is closed to be switched on or off.
Further, referring to Fig. 1 and Fig. 2, in one embodiment, output switching element 100 is opened including first
Close pipe Q1 and second resistance R2, input terminal of the emitter of first switch tube Q1 as output switching element 100, first switch tube
Output end of the collector of Q1 as output switching element 100, the base stage of first switch tube Q1 is as output switching element 100
One end of control signal, second resistance R2 is connect with the emitter of first switch tube Q1, the other end of second resistance R2 and
The base stage of one switching tube Q1 connects.
It is thus desirable to explanation, when output switching element 100 starts work, output voltage control unit 400 is exported
Signal is controlled in the first switch tube Q1 into output switching element 100, first switch tube Q1 is connected, i.e. output switching element
100 starting work, the voltage of power Vcc can stablize output into external load, into standby mode；Work as output switching element
100 when not starting work, and output voltage control unit 400 outputs control signals to the first switch tube of output switching element 100
In Q1, first switch tube Q1 is ended, i.e. output switching element 100 does not start work, the voltage of power Vcc can not just export to
In external load, it is reset to original state；Second resistance R2 is biasing resistor, provides driving electricity for the conducting of first switch tube Q1
Pressure.
Specifically, referring to Fig. 2, in one embodiment, first switch tube Q1 is PNP switching tube.
It is thus desirable to which explanation, can flexibly select the type of first switch tube Q1 in conjunction with actual needs.
Specifically, referring to Fig. 2, in one embodiment, the resistance value of second resistance R2 is equal to 1M Ω.
It is thus desirable to which explanation, can flexibly select the resistance value size of second resistance R2 in conjunction with actual needs.
Further, referring to Fig. 1 and Fig. 2, in one embodiment, partial pressure unit 200 includes first resistor R1
With the 5th resistance R5, input terminal of the one end of first resistor R1 as partial pressure unit 200, the other end of first resistor R1, which is used as, to be divided
The output end of unit 200 is pressed, one end of the 5th resistance R5 is connect with the other end of first resistor R1, the other end of the 5th resistance R5
Ground connection.
It is thus desirable to explanation, partial pressure unit 200 plays the role of partial pressure, and first resistor R1 and the 5th resistance R5 are total
With partial pressure is played the role of, by the voltage input of partial pressure into output voltage control unit 400, it is switched on or off to be subsequent
It prepares.
Specifically, referring to Fig. 2, in one embodiment, the resistance value of first resistor R1 is equal to 1.5M Ω, the 5th electricity
The resistance value for hindering R5 is equal to 470 Ω.
It is thus desirable to explanation, the resistance value size and the of first resistor R1 in conjunction with actual needs, can be flexibly selected
The resistance value size of five resistance R5.
Further, referring to Fig. 2, in one embodiment, output voltage control unit 400 includes first capacitor
C1, the second capacitor C2,3rd resistor R3, the 6th resistance R6, the 7th resistance R7 and second switch Q2, one end of first capacitor C1
As the first input end of output voltage control unit 400, the other end of first capacitor C1 one end with the 6th resistance R6 respectively
It is connected with one end of the 7th resistance R7, second input terminal of the other end of the 6th resistance R6 as output voltage control unit 400,
The other end of 7th resistance R7 is grounded, and one end of the second capacitor C2 is connect with one end of the 6th resistance R6, and the second capacitor C2's is another
One end is connect with the other end of the 6th resistance R6, and one end of 3rd resistor R3 is defeated as the feedback of output voltage control unit 400
Enter end, feedback output end of the other end of 3rd resistor R3 as output voltage control unit 400, the transmitting of second switch Q2
Pole is connect with one end of the second capacitor C2, and the base stage of second switch Q2 is connect with the other end of the second capacitor C2, second switch
Control output end of the collector of pipe Q2 as output voltage control unit 400.
It is thus desirable to explanation, when output voltage control unit 400 starts work, second switch Q2 output control
Into output switching element 100, switch unit 100, the output voltage of power Vcc is exported to external load signal
In, into standby mode；When second switch Q2 outputs control signals to output switching element 100, closing output switching element
When 100, the output voltage of power Vcc can not be exported into external load, be reset to original state；First capacitor C1 plays charge and discharge
The effect of electricity, for being switched on or off second switch Q2；Second capacitor C2 plays the role of of short duration storage voltage signal, protects
Effective conducting of second switch Q2 is demonstrate,proved, while also acting as the effect of filtering；3rd resistor R3 plays the role of feedback；6th electricity
Resistance R6 is biasing resistor, provides driving voltage for conducting second switch Q2；7th resistance R7 plays the role of voltage raising.
Specifically, referring to Fig. 2, in one embodiment, second switch Q2 is NPN switching tube.
It is thus desirable to which explanation, can flexibly select the type of second switch Q2 in conjunction with actual needs.
Specifically, referring to Fig. 2, in one embodiment, the capacitance of first capacitor C1 is equal to 0.22uF, and second
The capacitance of capacitor C2 is equal to 10nF.
It is thus desirable to explanation, in conjunction with actual needs, can flexibly select first capacitor C1 capacitance size and
The capacitance size of second capacitor C2.
Specifically, referring to Fig. 2, in one embodiment, the resistance value of 3rd resistor R3 is equal to 220k Ω, the 6th electricity
The resistance value for hindering R6 is equal to 100k Ω, and the resistance value of the 7th resistance R7 is equal to 4.7k Ω.
It is thus desirable to explanation, in conjunction with actual needs, can flexibly select 3rd resistor R3 resistance value size and
The resistance value size of 6th resistance R6 and the resistance value size of the 7th resistance R7.
Embodiment one
Referring to Fig. 2, in this embodiment, 5V is equal to the voltage value of power Vcc, first switch tube Q1 opens for PNP
The resistance value of Guan Guan, second resistance R2 are equal to 1M Ω, and the resistance value of first resistor R1 is equal to 1.5M Ω, and the resistance value of the 5th resistance R5 is equal to
470 Ω, second switch Q2 are NPN switching tube, and the capacitance of first capacitor C1 is equal to 0.22uF, the capacitance of the second capacitor C2
Equal to 10nF, the resistance value of 3rd resistor R3 is equal to 220k Ω, and the resistance value of the 6th resistance R6 is equal to 100k Ω, the resistance of the 7th resistance R7
Value is equal to for 4.7k Ω.
Since first resistor R1 and the 5th resistance R5 form typical bleeder circuit, due to first resistor R1 resistance value very
Greatly, therefore, the electric current consumed on first resistor R1 is very small, can be ignored substantially, it is possible to for a long time by individual palpation
Bonding electron switching circuit 10 is applied in electronic product, it is not necessary to worry persistently to open single-button electronic switching circuit 10 and lead to electricity
The excessively high problem of sub- product power consumption.
The voltage of first resistor R1 and the 5th resistance R5 central point is 1.193V, central point voltage, that is, first resistor R1 and the
Tie point voltage value between five resistance R5, this central point voltage be charge to first capacitor C1, at this point, power Vcc,
First resistor R1, first capacitor C1, the 7th resistance R7 and the earth GND are composition charge circuit, and first capacitor C1 is in central point electricity
It can be filled with the voltage value of 1.193V under the charging operations of pressure, first capacitor C1 at this time is charged to left positive right negative 1.193V
Voltage.
After user presses driving switch 300 for the first time, since first capacitor C1 is left positive right negative voltage, due to driving
Switch 300 is pressed, and first capacitor C1 has discharge loop, and first capacitor C1 will start to discharge, and discharge loop is the first electricity
Hold six capacitor of resistance R6-second C2 of C1-driving switch 300-the-second switch Q2-first capacitor C1, due to the 6th
Resistance R6, the second capacitor C2 and second switch Q2 have parallel connectivity, and discharge current can pass through these three components simultaneously,
The electric discharge result of first capacitor C1 is exactly that voltage signal just lower negative on one is generated on the 6th resistance R6, just lower negative on this
Voltage signal second switch Q2 can be connected, when second switch Q2 conducting after, first switch tube Q1 can be also switched on, simultaneously
The collector of first switch tube Q1 can feed back a signal extremely by 3rd resistor R3, so that the output end output one of power Vcc
A stable 4V voltage signal allows electronic product to enter standby mode into external load.
From above description we it is found that after first capacitor C1 is electrically charged, have a left side positive right negative on first capacitor C1
Voltage signal, when user for the first time press driving switch 300 after, first capacitor C1 starts to discharge, at this time on the 7th resistance R7
It has discharge current to flow through, the discharge current for flowing through the 7th resistance R7 can generate a voltage on the 7th resistance R7, this electricity
Pressure can be greater than the 4V voltage value of power Vcc output, at this point, the voltage difference of the right low left high of first capacitor C1 will be reversed to it is left low
Right high voltage difference, i.e., first capacitor C1 at this time are that the right side is being born just in a left side.After user presses driving switch 300 for the second time, first
Capacitor C1 starts again at electric discharge, and since the voltage above first capacitor C1 is that the right side is being born just in a left side, discharge loop at this time is inverted, electric discharge
Circuit reversion becomes the resistance of first capacitor C1-the 6th R6-driving switch 300-first capacitor C1, discharge current meeting at this time
The voltage signal positive under above bearing of generation one on the 6th resistance R6.Since the charging voltage of first capacitor C1 at this time is higher,
So that the voltage signal that electric discharge generates also can be higher, this reversed voltage signal can jump out second switch Q2 conducting shape
State, i.e. second switch Q2 are returned directly to the state of cut-off, and single-button electronic switching circuit 10 is returned as original state.
The flow direction of first capacitor C1 charging and discharging currents is cleverly utilized in the application, so that the voltage on first capacitor C1
The polarity of signal inverts back and forth, then controls the on or off of two switching tubes of rear class.The application and existing utilization
Mechanical switch enters standby mode difference by electronic product and is, the application presses the wink of driving switch 300 in user for the first time
Between, so that it may allow electronic product to enter standby mode, existing mechanical switch due to being physically contacted, user need using
Biggish pressing force and compressing time act on mechanical switch, this undoubtedly will increase the abrasion of mechanical switch, reduce mechanical
The service life of switch, and when mechanical switch does not reach position or inadequate contact, it can generate certain Touch error, and this Shen
It please be with the moment for pressing driving switch 300 for the first time, so that it may electronic product be allowed to enter standby mode；In addition, the application
The conducting of first switch tube Q1 and second switch Q2 are controlled herein in connection with the reversion of the potential difference on first capacitor C1 or are cut
Only so that electronic product is entered standby mode and existing mechanical switch and touched using physics to allow electronic product to enter standby shape
State has difference substantially, and the circuit stability of the application is stronger, it is not easy to mechanical wear, circuit life occur
Long, touching error incidence is smaller, is switched on or off using electric signal, so that electronic product be allowed to stablize into standby
State.The application is to control whether single-button electronic switching circuit 10 starts work using electric signal, is started using electric signal
Mode first is that stablize, second is that mechanical wear, long service life will not occur；Third is that reaction is compared to mechanical switch, this circuit
React sensitiveer, i.e. touching error incidence is smaller.
Single-button electronic switching circuit of the invention passes through setting output switching element, partial pressure unit, driving switch and defeated
Voltage control unit out.In actual application process, output switching element is used for output voltage, by the output electricity of power Vcc
Pressure output is load supplying into external load；Partial pressure unit plays the role of partial pressure, when user presses driving switch, will divide
In the output voltage input to output voltage control unit for pressing unit；Output voltage control unit is electric using the output of partial pressure unit
Pressure, control output switching element are switched on or off.Mechanical wear is less likely to occur the present invention, and circuit life is long, touching
It is smaller to touch error incidence, is switched on or off using electric signal, so that allowing electronic product to stablize enters standby mode.
Only several embodiments of the present invention are expressed for embodiment described above, and the description thereof is more specific and detailed, but
It cannot be construed as a limitation to the scope of the present invention.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to of the invention
Protection scope.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of single-button electronic switching circuit characterized by comprising
Output switching element, the input terminal of the output switching element and the output end of power Vcc connect, and the output switch is single
The output end of member and the input terminal of external load connect；
Partial pressure unit, the input terminal of the partial pressure unit and the output end of power Vcc connect；
Driving switch, one end of the driving switch are connect with the output end of the partial pressure unit；And
Output voltage control unit, the first input end of the output voltage control unit and the output end of the partial pressure unit connect
It connects, the second input terminal of the output voltage control unit is connect with the other end of the driving switch, the output voltage control
The feedback input end of unit processed is connect with the output end of the output switching element, and the feedback of the output voltage control unit is defeated
Outlet is connect with the second input terminal of the output voltage control unit, the control output end of the output voltage control unit with
The control signal of the output switching element connects.
2. single-button electronic switching circuit according to claim 1, which is characterized in that the output switching element includes the
One switching tube Q1 and second resistance R2, input terminal of the emitter of the first switch tube Q1 as the output switching element,
The base stage of output end of the collector of the first switch tube Q1 as the output switching element, the first switch tube Q1 is made
For the control signal of the output switching element, the emitter of one end of the second resistance R2 and the first switch tube Q1
Connection, the other end of the second resistance R2 are connect with the base stage of the first switch tube Q1.
3. single-button electronic switching circuit according to claim 2, which is characterized in that the first switch tube Q1 is PNP
Switching tube.
4. single-button electronic switching circuit according to claim 2, which is characterized in that the resistance value etc. of the second resistance R2
In 1M Ω.
5. single-button electronic switching circuit according to claim 1, which is characterized in that the partial pressure unit includes the first electricity
Hinder R1 and the 5th resistance R5, input terminal of the one end of the first resistor R1 as the partial pressure unit, the first resistor R1
Output end of the other end as the partial pressure unit, one end of the 5th resistance R5 and the other end of the first resistor R1
Connection, the other end ground connection of the 5th resistance R5.
6. single-button electronic switching circuit according to claim 5, which is characterized in that the resistance value etc. of the first resistor R1
It is equal to 470 Ω in the resistance value of 1.5M Ω, the 5th resistance R5.
7. single-button electronic switching circuit according to claim 1, which is characterized in that the output voltage control unit packet
Include first capacitor C1, the second capacitor C2,3rd resistor R3, the 6th resistance R6, the 7th resistance R7 and second switch Q2, described
First input end of the one end of one capacitor C1 as the output voltage control unit, the other end difference of the first capacitor C1
It is connect with one end of one end of the 6th resistance R6 and the 7th resistance R7, the other end of the 6th resistance R6 is as institute
The second input terminal of output voltage control unit is stated, the other end of the 7th resistance R7 is grounded, and the one of the second capacitor C2
End is connect with one end of the 6th resistance R6, and the other end of the second capacitor C2 and the other end of the 6th resistance R6 connect
It connects, feedback input end of the one end of the 3rd resistor R3 as the output voltage control unit, the 3rd resistor R3's
Feedback output end of the other end as the output voltage control unit, the emitter of the second switch Q2 and described second
One end of capacitor C2 connects, and the base stage of the second switch Q2 is connect with the other end of the second capacitor C2, and described second
Control output end of the collector of switching tube Q2 as the output voltage control unit.
8. single-button electronic switching circuit according to claim 7, which is characterized in that the second switch Q2 is NPN
Switching tube.
9. single-button electronic switching circuit according to claim 7, which is characterized in that the capacitance of the first capacitor C1
Equal to 0.22uF, the capacitance of the second capacitor C2 is equal to 10nF.
10. single-button electronic switching circuit according to claim 7, which is characterized in that the resistance value of the 3rd resistor R3
Equal to 220k Ω, the resistance value of the 6th resistance R6 is equal to 100k Ω, and the resistance value of the 7th resistance R7 is equal to 4.7k Ω.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630988.4A CN109560805A (en) | 2018-12-29 | 2018-12-29 | Single-button electronic switching circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630988.4A CN109560805A (en) | 2018-12-29 | 2018-12-29 | Single-button electronic switching circuit |
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| CN109560805A true CN109560805A (en) | 2019-04-02 |
Family
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| CN201811630988.4A Pending CN109560805A (en) | 2018-12-29 | 2018-12-29 | Single-button electronic switching circuit |
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| CN209488548U (en) * | 2018-12-29 | 2019-10-11 | 惠州三华工业有限公司 | Single-button electronic switching circuit |
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|---|---|---|---|---|
| KR20100135632A (en) * | 2009-06-17 | 2010-12-27 | 하가전자 주식회사 | The electronic wall mounted switch and its load equipment |
| US20140001885A1 (en) * | 2011-03-23 | 2014-01-02 | Shenzhen Ada Electronics Co., Ltd. | Energy-saving electronic touch switch |
| CN104215531A (en) * | 2013-05-30 | 2014-12-17 | 深圳市海洋王照明工程有限公司 | Key switch lift test circuit |
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