CN108919728A - A kind of control circuit - Google Patents
A kind of control circuit Download PDFInfo
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- CN108919728A CN108919728A CN201810966841.6A CN201810966841A CN108919728A CN 108919728 A CN108919728 A CN 108919728A CN 201810966841 A CN201810966841 A CN 201810966841A CN 108919728 A CN108919728 A CN 108919728A
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- circuit
- switch
- control
- controller
- bleeder circuit
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
Embodiment of the present invention is related to controller power supply technique field, more particularly to a kind of control circuit.Control circuit includes：Controller；First switch circuit, input terminal are connect with power supply, and the feeder ear connection of output end and controller, control terminal is connect with input control end；Second switch circuit, input terminal are connect with power supply, and output end is connect with the control terminal of first switch circuit, the control terminal connection of control terminal and controller；The connection that controller and power supply are maintained when controller works may be implemented in the control circuit, when needing to power off, the power supply line of controller output control level shutdown power supply, and controller can be maintained not connect with power supply, when needing to power again, input high level is opened the power supply line of power supply by input control end, and power supply can be maintained to power for it, to solve the problems such as controller can not be self-locking and be reopened after closing own power source.
Description
Technical field
Embodiment of the present invention is related to controller power supply technique field, more particularly to a kind of control circuit.
Background technique
With the fast development of science and technology and national economy, country proposes higher energy conservation to electric equipment products now and wants
It asks, in order to reach energy conservation object, it would be desirable to electric equipment products be accomplished to lower power consumption as far as possible in stand-by mode, at this time
It just needs that all circuits of off working state are closed power supply in standby mode, including controller.
In the implementation of the present invention, following problems exist in the prior art in the present inventor：Existing
In technology, there is a contradiction when closing controller power source, because controller is to open by output low and high level to carry out circuit
Control is closed, if output low level closes own power source, after closing power supply, lasting output low level is led to power supply by controller
It can not start, if output high level closes power supply, just cannot keep output high level after closing own power source, cannot keep
Power supply is continuously off.
Summary of the invention
Embodiment of the present invention is mainly solving the technical problems that provide a kind of control circuit, it is intended to which solving controller can
The problem of closing own power source.
In order to solve the above technical problems, the technical solution that embodiment of the present invention uses is：A kind of control electricity is provided
Road, including：
Controller；
First switch circuit, input terminal are connect with power supply, the output end of the first switch circuit and the control
The feeder ear of device processed connects, and the control terminal of the first switch circuit is connect with input control end；
Second switch circuit, input terminal are connect with the power supply, the output end of the second switch circuit and institute
The control terminal connection of first switch circuit is stated, the control terminal of the second switch circuit is connect with the control terminal of the controller；
Wherein, in the case where the controller is in operating mode, the first switch circuit conducting, described second is opened
Powered-down road cut-off, the power supply are the controller continued power by the first switch circuit；In the controller
In the case where needing to close power supply, output control level is acted on the second switch circuit by the control terminal of the controller
The second switch circuit is connected in control terminal, and the second switch circuit acts on the control of the first switch circuit in turn
End ends the first switch circuit, with the connection closed between the controller and the power supply；It is needing again
In the case where opening the controller, input high level is acted on the control of the first switch circuit by the input control end
The first switch circuit is connected in end, so make the power supply by the first switch circuit controller into
Row power supply.
Optionally, the first switch circuit includes the first bleeder circuit, the second bleeder circuit, third bleeder circuit, the
Four bleeder circuits, the 5th bleeder circuit, first switch tube, second switch and the first charging circuit；
One end of first bleeder circuit connects the power supply, and the other end of first bleeder circuit connects institute
State one end of the second bleeder circuit, the other end of second bleeder circuit respectively with one end of first charging circuit, institute
State the control terminal connection of second switch, the other end ground connection of first charging circuit, the output end of the second switch
Ground connection, the input terminal of the first switch tube is connect with one end of the power supply, the third bleeder circuit respectively, described
The input terminal of first switch tube is connect with the feeder ear of the controller, power output end respectively, the first switch tube control
End is connect with one end of the other end of the third bleeder circuit, the 4th bleeder circuit respectively, the 4th bleeder circuit
The other end connect respectively with the input terminal of one end of the 5th bleeder circuit, the second switch, it is described 5th partial pressure
The other end of circuit is connect with the control terminal of the control terminal of the controller, the second switch circuit respectively.
Optionally, the second switch circuit includes the 6th bleeder circuit, the 7th bleeder circuit, third switching tube and second
Charging circuit；
The input terminal of the third switching tube respectively with the other end of first bleeder circuit, second bleeder circuit
One end connection, the control terminal of the third switching tube respectively with one end of the 6th bleeder circuit, it is described 7th partial pressure electricity
The one end on road connects, the other end of the 6th bleeder circuit respectively with one end of second charging circuit, 5th point described
The control terminal connection of the other end of volt circuit, the controller, the output end of the third switching tube, the 7th bleeder circuit
The other end and the other end of second charging circuit be grounded.
Optionally, first bleeder circuit is first resistor, second bleeder circuit is second resistance, the third
Bleeder circuit is 3rd resistor, the 4th bleeder circuit is the 4th resistance, the 5th bleeder circuit is the 5th resistance, described
6th bleeder circuit is the 6th resistance, the 7th bleeder circuit is the 7th resistance.
Optionally, first charging circuit includes first capacitor, one end of the first capacitor respectively with second switch
The control terminal of pipe, the other end of second bleeder circuit, input control end connection, another termination of the first capacitor
Ground.
Optionally, second charging circuit includes the second capacitor, and one end of second capacitor is respectively with the described 6th
The control terminal connection of the other end of bleeder circuit, the other end of the 5th bleeder circuit, the controller, second capacitor
The other end ground connection；
Wherein, the capacitance of the first capacitor is less than the capacitance of second capacitor.
Optionally, the control circuit further includes first diode, the input terminal of the first diode and the input
Control terminal connection, the output end of the first diode respectively with the other end of second bleeder circuit, the second switch
One end connection of the control terminal of pipe, the first capacitor.
Optionally, the control circuit further includes the second diode, the input terminal of second diode and the control
The control terminal of device connects, the output end of second diode respectively with the other end of the 5th bleeder circuit, the described 6th
One end connection of the other end of bleeder circuit, second capacitor.
Optionally, the first switch tube includes the first triode, and the second switch includes the second triode, described
Third switching tube includes third transistor.
Optionally, first triode is PNP type triode, and the input terminal of the first switch tube is the described 1st
The emitter of pole pipe, the output end of the first switch tube are the collector of first triode, the first switch tube
Control terminal is the base stage of first triode；
Second triode is NPN type triode, and the input terminal of the second switch is second triode
Emitter, the output end of the second switch are the collector of second triode, the control terminal of the second switch
For the base stage of second triode；
The third transistor is NPN type triode, and the input terminal of the third switching tube is the third transistor
Emitter, the output end of the third switching tube are the collector of the third transistor, the control terminal of the third switching tube
For the base stage of the third transistor.
The beneficial effect of embodiment of the present invention is：It is in contrast to the prior art, in embodiments of the present invention, control
Circuit processed, including：Controller；First switch circuit, input terminal are connect with power supply, the output of the first switch circuit
End is connect with the feeder ear of the controller, and the control terminal of the first switch circuit is connect with input control end；Second switch
Circuit, input terminal are connect with the power supply, the output end of the second switch circuit and the first switch circuit
Control terminal connection, the control terminal of the second switch circuit are connect with the control terminal of the controller；Wherein, in the controller
In the case where operating mode, the first switch circuit conducting, the second switch circuit ends, and the power supply is logical
Crossing the first switch circuit is the controller continued power；It is described in the case where the controller needs to close power supply
The control terminal that output control level acts on second switch circuit is connected the second switch circuit by the control terminal of controller,
The control terminal that the second switch circuit acts on the first switch circuit in turn ends the first switch circuit, thus
Realize the connection closed between the controller and the power supply；In the case where needing to reopen the controller,
The input control end is led by control terminal to the first switch circuit that input high level acts on the first switch circuit
It is logical, and then it is powered the power supply by the first switch circuit controller.Control circuit can as a result,
To realize the connection for maintaining controller and power supply when controller works, when needing to power off, controller output control electricity
The power supply line of flat shutdown power supply, and controller can be maintained not connect with power supply, it is defeated when needing to power again
Enter control terminal and input high level is opened to the power supply line of power supply, and power supply can be maintained to power for it, to solve
The problems such as certainly controller can not be self-locking and be reopened after closing own power source.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these are exemplary
Illustrate not constitute the restriction to embodiment, the element in attached drawing with same reference numbers label is expressed as similar member
Part, unless there are special statement, composition does not limit the figure in attached drawing.
Fig. 1 is a structural block diagram of embodiment of the present invention control circuit；
Fig. 2 is a structural schematic diagram of embodiment of the present invention control circuit；
Fig. 3 is another structural schematic diagram of embodiment of the present invention control circuit.
Specific embodiment
To facilitate the understanding of the present invention, with reference to the accompanying drawings and detailed description, the present invention is carried out in more detail
It is bright.It should be noted that be expressed " being fixed on " another element when element, it can directly on the other element or
There may be one or more elements placed in the middle therebetween.When an element is expressed " connection " another element, it be can be directly
It is connected to another element in succession or there may be one or more elements placed in the middle therebetween.Term used in this specification
"vertical", "horizontal", "left" and "right" and similar statement are for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification is led with technology of the invention is belonged to
The normally understood meaning of the technical staff in domain is identical.Used term is only in the description of the invention in this specification
The purpose of description specific embodiment is not intended to the limitation present invention.Term "and/or" used in this specification includes
Any and all combinations of one or more related listed items.
It please refers to Fig.1 to Fig.3, the control circuit 100 of embodiment of the present invention includes：Controller 10, first switch circuit
20 and second switch circuit 30.
Wherein, the input terminal of first switch circuit 20 is connect with power supply VCC_IN, the output of first switch circuit 20
End is connect with the feeder ear of controller 10, power output end VCC_OUT respectively, and the control terminal of first switch circuit 20 and input are controlled
WAKE_UP connection in end processed；Second switch circuit 30, input terminal is connect with power supply VCC_IN, second switch circuit 30
Output end is connect with the control terminal of first switch circuit 20, the control terminal of second switch circuit 30 and the control terminal of controller 10
Connection；Optionally, user can be inputted by modes such as key, signal of communication, sensor-triggereds in input control end WAKE_UP
High level.
In embodiments of the present invention, in the case where controller 10 is in operating mode, first switch circuit 20 is connected,
Second switch circuit 30 ends, and power supply VCC_IN is 10 continued power of controller by first switch circuit 20；It is controlling
In the case that device 10 needs to close power supply, output control level is acted on second switch circuit 30 by the control terminal of controller 10
Second switch circuit 30 is connected in control terminal, and the control terminal that second switch circuit 30 acts on first switch circuit 20 in turn makes
First switch circuit 20 ends, and with the connection closed between controller 10 and power supply VCC_IN, optionally, controls level
For high level；In the case where needing to reopen controller 10, input high level is acted on by input control end WAKE_UP
First switch circuit 20 is connected in the control terminal of one switching circuit 20, and then power supply VCC_IN is made to pass through first switch circuit
20 are powered for controller 10.
Specifically, first switch circuit 20 includes the first bleeder circuit 21, the second bleeder circuit 22, third bleeder circuit
23, the 4th bleeder circuit 24, the 5th bleeder circuit 25, first switch tube 26, second switch 27 and the first charging circuit 28；The
One end of one bleeder circuit 21 connects power supply VCC_IN, and the other end of the first bleeder circuit 21 connects the second bleeder circuit 22
One end, the other end of the second bleeder circuit 22 control terminal with one end of the first charging circuit 28, second switch 27 respectively
Connection, the other end of the first charging circuit 28 are grounded GND, and the output end of second switch 27 is grounded GND, first switch tube 26
Input terminal is connect with one end of power supply VCC_IN, third bleeder circuit 23 respectively, the input terminal difference of first switch tube 26
It is connect with the feeder ear of controller 10, power output end, 26 control terminal of first switch tube is another with third bleeder circuit 23 respectively
One end, the 4th bleeder circuit 24 one end connection, the other end of the 4th bleeder circuit 24 respectively with the 5th bleeder circuit 25 one
End, second switch 27 input terminal connection, the other end of the 5th bleeder circuit 25 respectively with the control terminal of controller 10, second
The control terminal of switching circuit 30 connects.
Second switch circuit 30 is filled including the 6th bleeder circuit 31, the 7th bleeder circuit 32, third switching tube 33 and second
Circuit 34；The input terminal of third switching tube 33 respectively with the other end of the first bleeder circuit 21, the second bleeder circuit 22 one
End connection, the control terminal of third switching tube 33 connect with one end of one end of the 6th bleeder circuit 31, the 7th bleeder circuit 32 respectively
Connect, the other end of the 6th bleeder circuit 31 respectively with one end of the second charging circuit 34, the 5th bleeder circuit 25 the other end,
The control terminal of controller 10 connects, the output end of third switching tube 33, the other end of the 7th bleeder circuit 32 and the second charging electricity
The other end on road 34 is grounded GND.
In embodiments of the present invention, the first bleeder circuit 21 is first resistor R1, the second bleeder circuit 22 is the second electricity
Resistance R2, third bleeder circuit 23 are 3rd resistor R3, the 4th bleeder circuit 24 is the 4th resistance R4, the 5th bleeder circuit 25 is the
Five resistance R5, the 6th bleeder circuit 31 are the 6th resistance R6, the 7th bleeder circuit 32 is the 7th resistance R7.Optionally, the first electricity
The resistance value for hindering R1 is 33 kilo-ohms, the resistance value of second resistance R2 is 10 kilo-ohms, the resistance value of 3rd resistor R3 is 0.56 kilo-ohm, the 4th
The resistance value of resistance R4 is 1.8 kilo-ohms, the resistance value of the 5th resistance R5 is 33 kilo-ohms, the resistance value of the 6th resistance R6 is 10 kilo-ohms and the 7th
The resistance value of resistance R7 is 4.7 kilo-ohms.
Further, the first charging circuit 28 include first capacitor C1, one end of first capacitor C1 respectively with second switch
The control terminal of pipe 27, the other end of the second bleeder circuit 22, the WAKE_UP connection of input control end, the other end of first capacitor C1
It is grounded GND.Second charging circuit 34 includes the second capacitor C2, and one end of the second capacitor C2 is another with the 6th bleeder circuit 31 respectively
The control terminal connection of one end, the other end of the 5th bleeder circuit 25, controller 10, the other end of the second capacitor C2 are grounded GND；Its
In, capacitance of the capacitance less than the second capacitor C2 of first capacitor C1, optionally, the capacitance of first capacitor C1 is equal to
The capacitance of 0.1UF, the second capacitor C2 are equal to 1UF.
In embodiments of the present invention, control circuit 100 further includes first diode D1 and the second diode D2, and the one or two
The input terminal of pole pipe D1 is connect with input control end WAKE_UP, the output end of first diode D1 respectively with the second bleeder circuit
One end connection of 22 other end, the control terminal of second switch 27, first capacitor C1.The input terminal of second diode D2 with
The control terminal of controller 10 connects, the output end of the second diode D2 respectively with the other end of the 5th bleeder circuit 25, the 6th point
One end connection of the other end of volt circuit 31, the second capacitor C2.
Further, first switch tube 26 includes the first triode Q1, and second switch 27 includes the second triode Q2, the
Three switching tubes 33 include third transistor Q3.Wherein, the first triode Q1 is PNP type triode, the input of first switch tube 26
End is the emitter of the first triode Q1, and the output end of first switch tube 26 is the collector of the first triode Q1, first switch
The control terminal of pipe 26 is the base stage of the first triode Q1；Second triode Q2 is NPN type triode, the input of second switch 27
End is the emitter of the second triode Q2, and the output end of second switch 27 is the collector of the second triode Q2, second switch
The control terminal of pipe 27 is the base stage of the second triode Q2；Third transistor Q3 be NPN type triode, third switching tube 33 it is defeated
Enter the emitter that end is third transistor Q3, the output end of third switching tube 33 is the collector of third transistor Q3, and third is opened
The control terminal for closing pipe 33 is the base stage of third transistor Q3.Optionally, controller 10 includes microprocessing unit.
The working principle of embodiment in order to better illustrate the present invention divides three kinds of situations to be described further below：
The first situation：As power supply VCC_IN on 100 First Contact Connections of control circuit, power supply VCC_IN is logical
It crosses first resistor R1 and second resistance R2 charges to first capacitor C1, power supply VCC_IN is simultaneously also by 3rd resistor
R3, the 4th resistance R4 and the 5th resistance R5 charge to the second capacitor C2, since the capacitance of first capacitor C1 is less than the second capacitor
The capacitance of C2, therefore, two terminal potential of first capacitor C1 rise compared to two terminal potential of the second capacitor C2 faster, so second opens
Second switch in powered-down road 30 will quickly be connected compared to the third switching tube in third switching circuit 40, once second
Second switch conducting in switching circuit 30, the current potential between the 4th resistance R4 and the 5th resistance R5 will be pulled low, power
Power supply VCC_IN no longer passes through 3rd resistor R3, the 4th resistance R4 and the 5th resistance R5 and charges to the second capacitor C2, on the contrary, the
Two capacitor C2 will also enter discharge condition by the 6th resistance R6 and the 7th resistance R7, as a result, in third switching circuit 40
The base potential and emitter potential of three switching tubes are low potential, and the shutdown of third switching tube, i.e. third switching circuit 40 are kept
Off state, during this, first switch tube and second switch are tended to remain on, and third switching tube is held off,
Controller 10 by it is lasting obtain power supply VCC_IN power supply.
Second situation：When the judgement of controller 10 needs to enter standby close pattern, need to close first switch at this time
Circuit 20, it is specific as follows to save electricity to turn off the power supply of controller 10：Controller 10 is defeated by the control terminal of itself
High level out, optionally, the control terminal of controller 10 itself can be the port STANDBY, which passes through first diode D1
It charges afterwards to the second capacitor C2, the current potential of the control terminal of third switching circuit 40 is drawn high after the second capacitor C2 is full of, the
Third switching tube in three switching circuits 40 will be connected, and then drag down the current potential between first resistor R1 and second resistance R2, make
It obtains first capacitor C1 to start to discharge to drag down the current potential of the control terminal of second switch circuit 30, second in second switch circuit 30
Switching tube will close, and then be also switched off the first switch tube of first switch circuit 20, and then turn off the power supply of controller 10,
The control terminal of controller 10 will export low level at this time, power supply VCC_IN by 3rd resistor R3, the 4th resistance R4,
5th resistance R5 and the 6th resistance R6 provides bias potential for the base stage of third switching tube in third switching circuit 40, maintains third
Switching tube is in the conductive state, and first switch tube and second switch then maintain off state, control circuit 100 is whole then to be tieed up
The state for stopping powering for controller 10 is held, controller 10 enters standby close pattern.
The third situation：When needing to want opening controller 10 again, need to open first switch tube again, at this time controller
10 when being in close state, i.e., power supply VCC_IN is not powered to controller 10, specific as follows：The external world passes through input
Control terminal WAKE_UP input high level, the high level is by being that first capacitor C1 charges after first diode D1, when first
When capacitor C1 charging complete, which acts on the control terminal of second switch circuit 30, that is, acts on the base of second switch
Pole, so that second switch circuit 30 is connected, after being connected due to second switch circuit 30 between the 4th resistance R4 and the 5th resistance R5
Current potential be pulled low, the current potential of the control terminal of first switch circuit 20 and third switching circuit 40 is pulled low, and is opened due to first
Powered-down road 20 is PNP type triode, and third switching circuit 40 is NPN type triode, the first switch tube of first switch circuit 20
Base potential be lower than emitter potential so that first switch tube is connected, i.e., first switch circuit 20 is connected, power supply at this time
VCC_IN is connected to the feeder ear of controller 10 and powers for controller 10 and enter the first above-mentioned situation, and third switch electricity
The base potential and emitter potential of third switching tube in road 40 are low potential, and the shutdown of third switching tube, i.e. third switch
Circuit 40 turns off, and controller 10 initially enters normal working condition.Optionally, user can pass through key, signal of communication, biography
The modes such as sensor triggering are in input control end WAKE_UP input high level.
It is worth noting that：In embodiments of the present invention, control circuit 100 mainly solves the control of above-mentioned three kinds of situations
State, it is specific as follows：The first, after connecting power supply VCC_IN, power supply VCC_IN can be maintained for the progress of controller 10
Power supply.The second, controller 10 can close own power source, and the state remained off.Third, the external world can be closed in controller 10
Be again turned on controller 10 when closing, and when controller 10 maintain open state, realization is continuously controller 10 and is powered.
In the state of a control for realizing these three situations, embodiment of the present invention is used and is handed between second switch and third switching tube
Locking switch state is pitched, the conducting of any of second switch and third switching tube will all turn off another, meanwhile, second opens
Another will be all connected by closing the shutdown of any of pipe and third switching tube, and each resistance, resistance and two poles are added in circuit
Pipe is to cooperate realization embodiment of the present invention, wherein each capacitor also has the function of stable state, eliminates interference.
In embodiments of the present invention, control circuit 100 includes：Controller 10；First switch circuit 20, input terminal with
Power supply VCC_IN connection, the output end of first switch circuit 20 are connect with the feeder ear of controller 10, first switch circuit
20 control terminal is connect with input control end WAKE_UP；Second switch circuit 30, input terminal and power supply VCC_IN connect
It connects, the output end of second switch circuit 30 is connect with the control terminal of first switch circuit 20, the control terminal of second switch circuit 30
It is connect with the control terminal of controller 10；Wherein, in the case where controller 10 is in operating mode, first switch circuit 20 is led
Logical, second switch circuit 30 ends, and power supply VCC_IN is 10 continued power of controller by first switch circuit 20；It is controlling
In the case that device 10 processed needs to close power supply, output control level is acted on second switch circuit by the control terminal of controller 10
Second switch circuit 30 is connected in 30 control terminal, and second switch circuit 30 acts on the control of first switch circuit 20 in turn
End ends first switch circuit 20, with the connection closed between controller 10 and power supply VCC_IN；It is needing to open again
In the case where opening controller 10, input high level is acted on the control of first switch circuit 20 by input control end WAKE_UP
End to first switch circuit 20 is connected, and then supplies that power supply VCC_IN by 20 controller 10 of first switch circuit
Electricity.Controller 10 can maintain power supply to power for it after connecting power supply VCC_IN as a result, when needing to power off, control
Device 10 exports the power supply line of high level shutdown power supply VCC_IN, and power supply VCC_IN stopping can be maintained to supply for it
Electricity, when needing to power again, input high level is opened the supply lines of power supply VCC_IN by input control end WAKE_UP
Road, and power supply VCC_IN can be maintained to power for it, so that solving controller 10 can not be self-locking after closing own power source
And the problems such as reopening.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of control circuit, which is characterized in that including：
Controller；
First switch circuit, input terminal are connect with power supply, the output end and the controller of the first switch circuit
Feeder ear connection, the control terminal of the first switch circuit connect with input control end；
Second switch circuit, input terminal are connect with the power supply, the output end of the second switch circuit and described the
The control terminal of one switching circuit connects, and the control terminal of the second switch circuit is connect with the control terminal of the controller；
Wherein, in the case where the controller is in operating mode, the first switch circuit conducting, the second switch electricity
Road cut-off, the power supply are the controller continued power by the first switch circuit；It is needed in the controller
In the case where closing power supply, output control level is acted on the control of the second switch circuit by the control terminal of the controller
The second switch circuit is connected in end, and the control terminal that the second switch circuit acts on the first switch circuit in turn makes
The first switch circuit cut-off, with the connection closed between the controller and the power supply；It is needing to reopen
In the case where the controller, the input control end makes the control terminal that input high level acts on the first switch circuit
The first switch circuit conducting, and then supply that the power supply by the first switch circuit controller
Electricity.
2. control circuit according to claim 1, which is characterized in that
The first switch circuit include the first bleeder circuit, the second bleeder circuit, third bleeder circuit, the 4th bleeder circuit,
5th bleeder circuit, first switch tube, second switch and the first charging circuit；
One end of first bleeder circuit connects the power supply, the other end connection of first bleeder circuit described the
One end of two bleeder circuits, the other end of second bleeder circuit respectively with one end of first charging circuit, described
The control terminal of two switching tubes connects, the other end ground connection of first charging circuit, the output end ground connection of the second switch,
The input terminal of the first switch tube is connect with one end of the power supply, the third bleeder circuit respectively, and described first
The input terminal of switching tube is connect with the feeder ear of the controller, power output end respectively, the first switch tube control terminal point
Do not connect with one end of the other end of the third bleeder circuit, the 4th bleeder circuit, the 4th bleeder circuit it is another
One end is connect with the input terminal of one end of the 5th bleeder circuit, the second switch respectively, the 5th bleeder circuit
The other end connect respectively with the control terminal of the control terminal of the controller, the second switch circuit.
3. control circuit according to claim 2, which is characterized in that
The second switch circuit includes the 6th bleeder circuit, the 7th bleeder circuit, third switching tube and the second charging circuit；
The input terminal of the third switching tube respectively with the other end of first bleeder circuit, second bleeder circuit one
End connection, the control terminal of the third switching tube respectively with one end of the 6th bleeder circuit, the 7th bleeder circuit
One end connection, the other end of the 6th bleeder circuit are electric with one end of second charging circuit, the 5th partial pressure respectively
The other end on road, the controller control terminal connection, the output end of the third switching tube, the 7th bleeder circuit it is another
The other end of one end and second charging circuit is grounded.
4. control circuit according to claim 3, which is characterized in that
First bleeder circuit is first resistor, second bleeder circuit is second resistance, the third bleeder circuit is
3rd resistor, the 4th bleeder circuit are the 4th resistance, the 5th bleeder circuit is the 5th resistance, the 6th partial pressure electricity
Six resistance of Lu Wei, the 7th bleeder circuit are the 7th resistance.
5. control circuit according to claim 4, which is characterized in that
First charging circuit includes first capacitor, the control with the second switch respectively of one end of the first capacitor
End, the other end of second bleeder circuit, input control end connection, the other end ground connection of the first capacitor.
6. control circuit according to claim 5, which is characterized in that
Second charging circuit includes the second capacitor, and one end of second capacitor is another with the 6th bleeder circuit respectively
The control terminal connection of one end, the other end of the 5th bleeder circuit, the controller, another termination of second capacitor
Ground；
Wherein, the capacitance of the first capacitor is less than the capacitance of second capacitor.
7. control circuit according to claim 6, which is characterized in that
The control circuit further includes first diode, and the input terminal of the first diode is connect with the input control end,
The output end of the first diode respectively with the other end of second bleeder circuit, the second switch control terminal,
One end of the first capacitor connects.
8. control circuit according to claim 7, which is characterized in that
The control circuit further includes the second diode, and the input terminal of second diode and the control terminal of the controller connect
Connect, the output end of second diode respectively with the other end of the 5th bleeder circuit, the 6th bleeder circuit it is another
One end connection of one end, second capacitor.
9. according to the described in any item control circuits of claim 3 to 8, which is characterized in that
The first switch tube includes the first triode, and the second switch includes the second triode, the third switching tube
Including third transistor.
10. control circuit according to claim 9, which is characterized in that
First triode is PNP type triode, and the input terminal of the first switch tube is the transmitting of first triode
Pole, the output end of the first switch tube are the collector of first triode, and the control terminal of the first switch tube is institute
State the base stage of the first triode；
Second triode is NPN type triode, and the input terminal of the second switch is the transmitting of second triode
Pole, the output end of the second switch are the collector of second triode, and the control terminal of the second switch is institute
State the base stage of the second triode；
The third transistor is NPN type triode, and the input terminal of the third switching tube is the transmitting of the third transistor
Pole, the output end of the third switching tube are the collector of the third transistor, and the control terminal of the third switching tube is institute
State the base stage of third transistor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994408A (en) * | 2019-12-02 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Low-power-consumption control system and control method, and electronic device |
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| CN112994408A (en) * | 2019-12-02 | 2021-06-18 | 佛山市顺德区美的电热电器制造有限公司 | Low-power-consumption control system and control method, and electronic device |
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