CN108039826B - A kind of intelligent power supply power supply - Google Patents
A kind of intelligent power supply power supply Download PDFInfo
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- CN108039826B CN108039826B CN201711373629.0A CN201711373629A CN108039826B CN 108039826 B CN108039826 B CN 108039826B CN 201711373629 A CN201711373629 A CN 201711373629A CN 108039826 B CN108039826 B CN 108039826B
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention belongs to a kind of intelligent power supply power supply, electronic circuit technology fields.The intelligent power supply power supply includes: input circuit, conversion circuit, voltage regulator circuit and USB interface.The input circuit, the conversion circuit, the voltage regulator circuit and the USB interface are sequentially connected, and the input circuit with city for being electrically connected.First DC power transmission of the conversion circuit for 220V alternating current to be converted to voltage value as first threshold is to the voltage regulator circuit.The voltage regulator circuit is used to be converted in first direct current the second direct current electricity output that at least two-way voltage value is the second threshold less than the first threshold to the USB interface.The intelligent power supply power supply can realize at least two-way direct current output simultaneously, solve not flexible, the problem of victory inconvenient for use of conventional power source power supply, meanwhile, the wiring issue of route is greatly simplified using USB interface, does not have to professional wiring plug and play, and applicability is good.
Description
Technical field
The invention belongs to electronic circuit technology fields, and in particular to a kind of intelligent power supply power supply.
Background technique
With the development of industrial or agricultural and science and technology, almost all of industry is all electrified.In many applications, power supply is held
It carries on a shoulder pole and the power supply task of the systems such as signal, control, sensor is provided, it is desirable that work without interruption within 24 hours.These occasions are usual
It is inputted for power grid exchange or DC bus powered, and it is more to load the power supply mode as needed for chip, display device, sensor etc.
For low-voltage direct, and DC voltage required for different loads is different.If a host accesses the number of a few class different voltages
If word class sensor, each sensor will the power supply of special power source, will cause that equipment is various, difficulty of construction in this way
Greatly, drawback inflexible for use.
Summary of the invention
In consideration of it, the purpose of the present invention is to provide a kind of intelligent power supply power supplys, to effectively improve the above problem.
The embodiment of the present invention is achieved in that
The embodiment of the invention provides a kind of intelligent power supply power supplys, comprising: input circuit, conversion circuit, voltage regulator circuit and
USB interface.The input circuit, the conversion circuit, the voltage regulator circuit and the USB interface are sequentially connected, the input
Circuit with city for being electrically connected.The conversion circuit is used to be converted in 220V alternating current that voltage value is first threshold to be first straight
Galvanic electricity is transferred to the voltage regulator circuit.The voltage regulator circuit is used to first direct current being converted at least two-way voltage value
The second direct current electricity output less than the second threshold of the first threshold gives the USB interface.
In preferred embodiments of the present invention, the input circuit includes: input port, the first conducting wire and the second conducting wire,
One end of first conducting wire and one end of second conducting wire are connect with the input port, first conducting wire it is another
The other end of end and second conducting wire is connect with the conversion circuit.
In preferred embodiments of the present invention, the input circuit further include: switch and fuse, it is described switch and it is described
Fuse is all set on first conducting wire.
In preferred embodiments of the present invention, the conversion circuit includes: transformer and fairing, the transformer
First side winding is connect with the input circuit, and the secondary side winding of the transformer is connect with the fairing, described whole
Stream device is also connect with the voltage regulator circuit.
In preferred embodiments of the present invention, the secondary side winding includes: the first secondary side winding and second secondary side
Winding；The fairing includes: the first rectifier bridge and the second rectifier bridge, and first secondary side winding and described first rectify
Bridging connects, and the second secondary side winding is connect with second rectifier bridge, first rectifier bridge and second rectifier bridge
It is connect with the voltage regulator circuit.
In preferred embodiments of the present invention, the voltage regulator circuit includes: the first pressure stabilizing sub-circuit and the second pressure stabilizing son electricity
Road, the first pressure stabilizing sub-circuit are used to be converted in first direct current direct current electricity output of 15V to the USB interface,
The second pressure stabilizing sub-circuit is used to be converted in first direct current direct current electricity output of 5V and/or 3.3V to the USB
Interface.
In preferred embodiments of the present invention, the first pressure stabilizing sub-circuit include: the first voltage stabilizing chip, first capacitor,
Second capacitor and third capacitor, the input terminal of first voltage stabilizing chip respectively with the conversion circuit and the first capacitor
One end connection, the output end of first voltage stabilizing chip respectively with one end of second capacitor, one end of third capacitor and institute
State USB interface connection, the other end of the other end of the first capacitor, the other end of second capacitor and the third capacitor
It is grounded.
In preferred embodiments of the present invention, the second pressure stabilizing sub-circuit includes: the second voltage stabilizing chip, third pressure stabilizing core
Piece, the 4th capacitor, the 5th capacitor, the 6th capacitor and the 7th capacitor, the input terminal of second voltage stabilizing chip respectively with described turn
Circuit is changed to connect with one end of the 4th capacitor, the output end of second voltage stabilizing chip respectively with the third voltage stabilizing chip
Input terminal, one end of the 5th capacitor, one end of the 6th capacitor connected with the USB interface, the third pressure stabilizing
The output end of chip is connect with one end of the 7th capacitor and the USB interface respectively, the other end of the 4th capacitor, institute
The other end, the other end of the 6th capacitor and the other end of the 7th capacitor for stating the 5th capacitor are grounded, wherein described
Second voltage stabilizing chip is used to be converted in first direct current direct current electricity output of 5V, and the third voltage stabilizing chip is for described
The direct current of 5V is converted to the direct current electricity output of 3.3V.
In preferred embodiments of the present invention, the second pressure stabilizing sub-circuit further include: first resistor and light emitting diode,
One end of the first resistor is connect with the output end of the third voltage stabilizing chip, the other end of the first resistor and the hair
The connection of optical diode anode tap, the cathode terminal ground connection of the light emitting diode.
In preferred embodiments of the present invention, the intelligent power supply power supply further include: anti-back flow circuit, the voltage regulator circuit
It is connect through the anti-back flow circuit with the USB interface, the anti-back flow circuit makes electric current from one effluent of voltage regulator circuit
To the USB interface.
Intelligent power supply power supply provided in an embodiment of the present invention, comprising: input circuit, conversion circuit, voltage regulator circuit and USB connect
Mouthful.The input circuit, the conversion circuit, the voltage regulator circuit and the USB interface are sequentially connected, and the input circuit is used
It is electrically connected in city.The conversion circuit is used to being converted to 220V alternating current into the first direct current fax that voltage value is first threshold
It is defeated by the voltage regulator circuit.The voltage regulator circuit is used to first direct current being converted at least two-way voltage value as less than institute
The second direct current electricity output of the second threshold of first threshold is stated to the USB interface.The intelligent power supply power supply can realize simultaneously to
Few two-way direct current output solves not flexible, the problem of victory inconvenient for use of conventional power source power supply, because when a host access is several
If the numeric class chip of class different voltages, each chip will the power supply of special power source, then need multiple and different numerical value
Power supply carry out respectively these chips power supply, for example, the control chip that power values are 5V needs the power supply of 5V, voltage value 3.3V
Sensor need the power supply of 3.3V, then cause power supply numerous, need to occupy more volumes, so that the route of equipment is many
It is more, it is easy winding, use cost increases, it is often more important that, the output interface of unused power supply is inconsistent, needs professional wiring.
The wiring issue of route is greatly simplified using USB interface, does not have to professional wiring plug and play, and applicability is good.
Other features and advantages of the present invention will be illustrated in subsequent specification, also, partly be become from specification
It is clear that being understood by implementing the embodiment of the present invention.The objectives and other advantages of the invention can be by written
Specifically noted structure is achieved and obtained in specification, claims and attached drawing.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.By the way that shown in attached drawing, above and other purpose of the invention, feature and advantage will be more clear.In whole
Identical appended drawing reference indicates identical part in attached drawing.Attached drawing, emphasis deliberately are not drawn by actual size equal proportion scaling
It is to show the gist of the present invention.
Fig. 1 shows a kind of structural schematic diagram of intelligent power supply power supply of first embodiment of the invention offer.
Fig. 2 shows the circuit diagrams of input circuit provided in an embodiment of the present invention.
Fig. 3 shows the structural schematic diagram of conversion circuit provided in an embodiment of the present invention.
Fig. 4 shows the structural schematic diagram of voltage regulator circuit provided in an embodiment of the present invention.
Fig. 5 shows input circuit, conversion circuit and the sequentially connected electricity of voltage regulator circuit provided in an embodiment of the present invention
Road schematic diagram.
Fig. 6 shows a kind of structural schematic diagram of intelligent power supply power supply of second embodiment of the invention offer.
Fig. 7 shows the circuit diagram that anti-back flow circuit provided in an embodiment of the present invention is connect with USB interface.
Icon: 10A- intelligent power supply power supply；10B- intelligent power supply power supply；11- input circuit；12- conversion circuit；
121- transformer；122- fairing；13- voltage regulator circuit；131- the first pressure stabilizing sub-circuit；132- the second pressure stabilizing son electricity
Road；14-USB interface；15- anti-back flow circuit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "inner",
The orientation or positional relationship of the instructions such as "outside" be based on the orientation or positional relationship shown in the drawings or the invention product use
When the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and it should not be understood as instruction or dark
Show relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
First embodiment
The embodiment of the invention provides a kind of intelligent power supply power supply 10A, as shown in Figure 1, the intelligent power supply power supply 10A packet
Include: wiring board (in figure for show) and the input circuit 11 being set on wiring board, conversion circuit 12, voltage regulator circuit 13 and
Usb 14.
Input circuit 11, conversion circuit 12, voltage regulator circuit 13 and usb 14 are integrated on the wiring board, to install
It is fixed, volume is saved, and be also avoided that the mixed and disorderly sense that scattered component is caused.As an implementation, optionally,
As shown in Fig. 2, the input circuit 11, conversion circuit 12, voltage regulator circuit 13 and usb 14 are integrated in the same of the wiring board
Side, for example, positive.Wherein, the type of the wiring board can there are many, for example, ceramic circuit board, aluminum substrate, pcb board etc..
The input circuit 11 is used to be electrically connected with city, and also connect with the conversion circuit 12, for by 220V's
Alternating current is conveyed to conversion circuit 12.In this present embodiment, as shown in Fig. 2, the input circuit 11 includes: input port, first
Conducting wire, the second conducting wire, switch and fuse.The input port with city for being electrically connected, one end of first conducting wire and second
One end of conducting wire is connect with the input port, and the other end of the other end of first conducting wire and second conducting wire is and institute
State the connection of conversion circuit 12.Wherein, the CN1 in Fig. 2 is input port.
Wherein, for the ease of control, switch is provided on first conducting wire.When needing to enable the intelligent power supply power supply
When 10A powers to the component of such as sensor etc, start the switch and be at closed state, route is connected at this time；When
It when not needing power supply, is again started up the switch and is at off-state, route disconnects at this time, it can come according to the needs of use
The closing or opening of control switch, to meet the needs of control.Wherein, the SW in Fig. 2 is to switch.
Wherein, in order to guarantee the safety of route, it is provided with fuse on first conducting wire, works as line failure, such as
When short circuit, overload, meeting fuse wire avoids the component in damage route.Wherein, the F1 in Fig. 2 is fuse.
Wherein it is preferred to which the first above-mentioned conducting wire, for connecting with the firewire of alternating current, the second conducting wire is for zero with alternating current
Line connection.It is understood that the switch and fuse are all set on firewire, when the first conducting wire is zero curve, then this
When the switch and fuse be then set on the second conducting wire (at this point, the second conducting wire be firewire).
The conversion circuit 12 is connect with the input circuit 11 and the voltage regulator circuit 13 respectively.The conversion circuit 12 is used
In 220V alternating current is converted to the first DC power transmission that voltage value is first threshold to the voltage regulator circuit 13.In this implementation
In example, as shown in figure 3, the conversion circuit 12 includes: transformer 121 and fairing 122.
The first side winding of the transformer 121 is connect with the input circuit 11, further, the first side winding
One end is connect with the first conducting wire, and the other end of the first side winding is connect with the second conducting wire, the secondary side of the transformer 121 around
Group is connect with the fairing 122.It is first threshold that the transformer 121, which is used to be converted in the alternating current of 220V voltage value,
Low-voltage alternating-current electricity output is to fairing 122.As an alternative embodiment, as shown in the dashed middle line frame in Fig. 5, it should
Secondary side winding includes: the first secondary side winding and second secondary side winding, so as to the voltage one for exporting first side winding
It is divided into two, becomes two-way circuit output.
The fairing 122 is also connect with the voltage regulator circuit 13.The fairing 122 is used to voltage value be first
The low-voltage AC of threshold value is rectified into the direct current electricity output voltage regulator circuit 13.The fairing 122 can be to be often used at present
Have the component or circuit by AC rectification at this function of direct current, for example, full-wave rectifying circuit.In this when example
In, optionally, which includes the first rectifier bridge and the second rectifier bridge.
Wherein, first secondary side winding is connect with first rectifier bridge, first rectifier bridge and the pressure stabilizing
Circuit 13 connects.The AC rectification that first rectifier bridge is used to export the first secondary side winding is at direct current.The present embodiment
In, optionally, which can select the bridge rectifier of DB series, for example, DB207 bridge rectifier.
The second secondary side winding is connect with second rectifier bridge, second rectifier bridge and the voltage regulator circuit 13
Connection.The AC rectification that second rectifier bridge is used to export second secondary side winding is at direct current.It is optional in the present embodiment
Ground, second rectifier bridge can select the bridge rectifier of DB series, for example, DB207 bridge rectifier.
Wherein it is possible to understand, the quantity of the secondary side winding of transformer 121 can be one, be also possible to two,
It can also be more than two, correspondingly, according to the principle of the corresponding rectifier of a secondary side winding, the quantity of rectifier bridge
It is different with the difference of the quantity of 121 secondary side winding of transformer, for example, when the quantity of secondary side winding is one, this
When rectifier bridge quantity be also one, when the quantity of secondary side winding as shown in this embodiment is one, as side two
When secondary side winding and secondary secondary side winding, the quantity of rectifier bridge is also that two, as the first rectifier bridge and second rectify at this time
Bridge.It is thus impossible to quantity shown in the present embodiment is understood as to be limitation of the present invention, as long as in frame of the present invention
It should be included within the scope of the present invention in principle.
Wherein, the voltage of the first secondary side winding output and the voltage of the two or two survey side winding output can be identical, for example,
It is some particular value in first threshold range, for example, 24V；It can also be different, for example, the output of the first secondary side winding
Voltage is some particular value in first threshold range, such as 24V, and the two or two voltage for surveying the output of side winding is different from first
The other values of some particular value in threshold range, for example, 20V, remaining situation is similar, no longer illustrates one by one herein.
Wherein, above-mentioned first threshold is set according to actual needs, and in the present embodiment, what which indicated is one
A numberical range, as long as the value in the numberical range may be collectively referred to as first threshold namely first threshold is not to refer in particular to certain
A numerical value, but meeting the arbitrary value in a numberical range is first threshold, for example, in the present embodiment, the first threshold
The numberical range of expression is 24-36V.
The voltage regulator circuit 13 is connect with the conversion circuit 12 and usb 14 respectively, is used for first direct current
Electricity is converted to the second direct current electricity output that at least two-way voltage value is the second threshold less than the first threshold and connects to the USB
Mouth 14.Wherein, what second threshold also illustrated that is a numberical range, as long as the value in the numberical range may be collectively referred to as
Two threshold values namely second threshold do not refer in particular to some numerical value instead of, and meeting the arbitrary value in a numberical range is the second threshold
Value, for example, the numberical range that the second threshold indicates is 3.3-15V in the present embodiment.In this present embodiment, optionally, such as
Shown in Fig. 4, which includes: the first pressure stabilizing sub-circuit 131 and the second pressure stabilizing sub-circuit 132.
The first pressure stabilizing sub-circuit 131 with 4 circuit connection of first rectifier bridge and usb 1, is used for institute respectively
It states the first direct current and is converted to the direct current electricity output of 15V to the usb 14.In this present embodiment, optionally, as in Fig. 5
The upper right corner dotted line frame shown in, the first pressure stabilizing sub-circuit 131 include: the first voltage stabilizing chip U1, first capacitor C1, second electricity
Hold C2 and third capacitor C3.The input terminal of the first voltage stabilizing chip U1 respectively with the conversion circuit 12 and the first capacitor
One end of C1 connects, and further, the input terminal of first voltage stabilizing chip U1 is connect with the first rectifier bridge in conversion circuit 12,
The output end of the first voltage stabilizing chip U1 respectively with one end of the second capacitor C2, one end of third capacitor C3 and described
Usb 14 connects, the other end of the first capacitor C1, the other end of the second capacitor C2 and the third capacitor C3
The other end is grounded.
Wherein, first capacitor C1, the second capacitor C2 are storage capacitor, and third capacitor C3 is filter capacitor.
The second pressure stabilizing sub-circuit 132 with 4 circuit connection of second rectifier bridge and usb 1, is used for institute respectively
It states the first direct current and is converted to the direct current electricity output of 5V and/or 3.3V to the usb 14.In this present embodiment, as in Fig. 5
The lower right corner dotted line frame shown in, optionally, which includes: the second voltage stabilizing chip U2, third pressure stabilizing core
Piece U3, the 4th capacitor C4, the 5th capacitor C5, the 6th capacitor C6 and the 7th capacitor C7.The input terminal of the second voltage stabilizing chip U2
It is connect respectively with one end of the conversion circuit 12 and the 4th capacitor C4, further, second voltage stabilizing chip U2's is defeated
Enter end to connect with the second rectifier bridge in conversion circuit 12, the output end of the second voltage stabilizing chip U2 is steady with the third respectively
The input terminal of chip U3, one end of the 5th capacitor C5, one end of the 6th capacitor C6 and the usb 14 is pressed to connect
It connects, the output end of the third voltage stabilizing chip U3 is connect with one end of the 7th capacitor C7 and the usb 14 respectively, institute
State the other end and the described 7th of the other end of the 4th capacitor C4, the other end of the 5th capacitor C5, the 6th capacitor C6
The other end of capacitor C7 is grounded.Wherein, the second voltage stabilizing chip U2 is used to first direct current being converted to the straight of 5V
Galvanic electricity output, the third voltage stabilizing chip U3 are converted to the direct current electricity output of 3.3V for the direct current of the 5V.
Wherein, the 4th capacitor C4, the 5th capacitor C5, the 7th capacitor C7 are storage capacitor, and the 6th capacitor C6 is filtered electrical
Hold.
Wherein, as an alternative embodiment, the second pressure stabilizing sub-circuit 132 further include: first resistor R1 and hair
Optical diode D1.One end of the first resistor R1 is connect with the output end of the third voltage stabilizing chip U3, the first resistor
The other end of R1 is connect with the light emitting diode D1 anode tap, the cathode terminal ground connection of the light emitting diode D1.When this shines
When diode D1 shines, show that the intelligent power supply power supply 10A is in normal condition.
Wherein, present embodiment illustrates the different size of voltage values in three tunnels, but can not be understood as this to be to this hair
Bright limitation, numerical value can also be set according to actual needs, for example, when required voltage value is 12V, then it can be by it
The voltage stabilizing chip that output valve is 15V replaces with the voltage stabilizing chip that output valve is 125V, or increases the pressure stabilizing core that output valve is 12V
Piece.
Wherein it is possible to understand, when the quantity of secondary side winding be one when, the quantity of rectifier bridge also only one,
At this point, the second voltage stabilizing chip U2 is connected directly to the output end of the first voltage stabilizing chip U1, in Fig. 5 as shown in the present embodiment
The output end that third voltage stabilizing chip U3 is connected directly to the second voltage stabilizing chip U2 is the same.When the quantity of secondary side winding is three
When, the quantity of rectifier bridge is also three, at this point, the second voltage stabilizing chip U2 is connected directly to the second rectifier bridge, third voltage stabilizing chip
U3 is connected directly to third rectifier bridge, and the first voltage stabilizing chip U1 in Fig. 5 as shown in the present embodiment is connected directly to first
The output end of rectifier bridge is the same.It is thus impossible to the above-mentioned circuit diagram shown is understood as being limitation of the present invention, in the present invention
Principle under, can there are many circuit diagrams deformed, but as long as should be included in this under the principle framework of the embodiment of the present invention
Within the protection scope of invention.
Second embodiment
As an implementation, in order to avoid in use, electric current flows to voltage regulator circuit 13, example from external device
Such as, when intelligent power supply power supply 10B does not work, it is unable to output voltage, the electric energy in connected external equipment at this time
It is reversely flowed into the route through usb 14, causes the energy consumption in the external equipment being attached thereto impaired.As shown in fig. 6, with
One embodiment is compared, intelligent power supply power supply 10B further include: anti-back flow circuit 15, the voltage regulator circuit 13 is through the reverse-filling
Circuit 15 is connect with the usb 14, and the anti-back flow circuit 15 makes electric current flow to institute from 13 side of voltage regulator circuit
State usb 14.Further, as shown in fig. 7, the anti-back flow circuit 15 include: the second diode D2, third diode D3 and
4th diode D4.I.e. the output end of the first voltage stabilizing chip U1 is connect through the second diode D2 with usb 14, the second pressure stabilizing core
The output end of piece U2 is connect through third diode D3 with usb 14, and the output end of third voltage stabilizing chip U3 is through the 4th diode
D4 is connect with usb 14.Wherein, the USBMicro in Fig. 7 is usb 14.
Wherein, optionally, the anti-back flow circuit 15 also integrate with wiring board on, and with input circuit 11, conversion circuit 12,
Voltage regulator circuit 13 and usb 14 are integrated in the same side of the wiring board, for example, positive.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of intelligent power supply power supply characterized by comprising input circuit, conversion circuit, voltage regulator circuit and USB interface, institute
Input circuit, the conversion circuit, the voltage regulator circuit and the USB interface is stated to be sequentially connected, the input circuit be used for
City's electrical connection；
First DC power transmission of the conversion circuit for 220V alternating current to be converted to voltage value as first threshold is to described
Voltage regulator circuit；
It is less than the first threshold that the voltage regulator circuit, which is used to be converted in first direct current at least two-way voltage value,
Second direct current electricity output of second threshold gives the USB interface,
Wherein, the voltage regulator circuit includes: the first pressure stabilizing sub-circuit and the second pressure stabilizing sub-circuit, and the first pressure stabilizing sub-circuit is used
In first direct current being converted to the direct current electricity output of 15V to the USB interface,
The second pressure stabilizing sub-circuit includes: the second voltage stabilizing chip, third voltage stabilizing chip, the 4th capacitor, the 5th capacitor, the 6th electricity
Hold and the 7th capacitor, the input terminal of second voltage stabilizing chip connect with one end of the conversion circuit and the 4th capacitor respectively
Connect, the output end of second voltage stabilizing chip respectively with the input terminal of the third voltage stabilizing chip, the 5th capacitor one end,
One end of 6th capacitor is connected with the USB interface, and the output end of the third voltage stabilizing chip is electric with the described 7th respectively
One end of appearance is connected with the USB interface, the other end of the 4th capacitor, the other end of the 5th capacitor, the described 6th
The other end of the other end of capacitor and the 7th capacitor is grounded, wherein second voltage stabilizing chip is used for described first
Direct current is converted to the direct current electricity output of 5V, and the third voltage stabilizing chip is used to the direct current of the 5V being converted to 3.3V's
Direct current electricity output, wherein the 4th capacitor, the 5th capacitor, the 7th capacitor are storage capacitor, the 6th electricity
Holding is filter capacitor.
2. intelligent power supply power supply according to claim 1, which is characterized in that the input circuit includes: input port,
One end of one conducting wire and the second conducting wire, one end of first conducting wire and second conducting wire is connect with the input port,
The other end of the other end of first conducting wire and second conducting wire is connect with the conversion circuit.
3. intelligent power supply power supply according to claim 2, which is characterized in that the input circuit further include: switch and guarantor
Dangerous silk, the switch and the fuse are all set on first conducting wire.
4. intelligent power supply power supply according to claim 1-3, which is characterized in that the conversion circuit includes: to become
Depressor and fairing, the first side winding of the transformer are connect with the input circuit, the secondary side of the transformer around
Group is connect with the fairing, and the fairing is also connect with the voltage regulator circuit.
5. intelligent power supply power supply according to claim 4, which is characterized in that the secondary side winding includes: first secondary
Side winding and second secondary side winding；The fairing includes: the first rectifier bridge and the second rectifier bridge, first secondary side
Winding is connect with first rectifier bridge, and the second secondary side winding is connect with second rectifier bridge, first rectification
Bridge and second rectifier bridge are connect with the voltage regulator circuit.
6. intelligent power supply power supply according to claim 1, which is characterized in that the first pressure stabilizing sub-circuit includes: first
Voltage stabilizing chip, first capacitor, the second capacitor and third capacitor, the input terminal of first voltage stabilizing chip are electric with the conversion respectively
Road is connected with one end of the first capacitor, the output end of first voltage stabilizing chip respectively with one end of second capacitor,
One end of third capacitor is connected with the USB interface, the other end of the first capacitor, the other end of second capacitor and institute
The other end for stating third capacitor is grounded.
7. intelligent power supply power supply according to claim 1, which is characterized in that the second pressure stabilizing sub-circuit further include: the
One resistance and light emitting diode, one end of the first resistor are connect with the output end of the third voltage stabilizing chip, and described first
The other end of resistance is connect with the light emitting diode anode tap, the cathode terminal ground connection of the light emitting diode.
8. intelligent power supply power supply according to claim 1, which is characterized in that the intelligent power supply power supply further include: anti-down
Fill circuit, the voltage regulator circuit connect through the anti-back flow circuit with the USB interface, the anti-back flow circuit make electric current from
The voltage regulator circuit side flows to the USB interface.
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| CN108039826B true CN108039826B (en) | 2019-08-27 |
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| CN109302055A (en) * | 2018-10-31 | 2019-02-01 | 深圳码时创新科技有限公司 | Alternating current turns the power-supply system of direct current |
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| CN203104307U (en) * | 2013-01-09 | 2013-07-31 | 深圳博英特科技有限公司 | Controllable common ground power supply circuit |
| CN103887994A (en) * | 2014-04-09 | 2014-06-25 | 张新安 | Simple and efficient direct-current voltage-stabilized source for laboratory |
| CN103944416A (en) * | 2014-05-02 | 2014-07-23 | 张新安 | Multi-output switch direct current voltage stabilizing power source with simple circuit |
| CN204442187U (en) * | 2015-03-14 | 2015-07-01 | 河北超联电子科技有限公司 | A kind of safety low-pressure DC power supply |
| CN105391314A (en) * | 2015-12-30 | 2016-03-09 | 山东海量信息技术研究院 | Direct current voltage stabilizing power source |
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| CN203104307U (en) * | 2013-01-09 | 2013-07-31 | 深圳博英特科技有限公司 | Controllable common ground power supply circuit |
| CN103887994A (en) * | 2014-04-09 | 2014-06-25 | 张新安 | Simple and efficient direct-current voltage-stabilized source for laboratory |
| CN103944416A (en) * | 2014-05-02 | 2014-07-23 | 张新安 | Multi-output switch direct current voltage stabilizing power source with simple circuit |
| CN204442187U (en) * | 2015-03-14 | 2015-07-01 | 河北超联电子科技有限公司 | A kind of safety low-pressure DC power supply |
| CN105391314A (en) * | 2015-12-30 | 2016-03-09 | 山东海量信息技术研究院 | Direct current voltage stabilizing power source |
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