CN107069909A - A kind of energy-saving mobile phone charger that can be automatically powered off - Google Patents
A kind of energy-saving mobile phone charger that can be automatically powered off Download PDFInfo
- Publication number
- CN107069909A CN107069909A CN201710183153.8A CN201710183153A CN107069909A CN 107069909 A CN107069909 A CN 107069909A CN 201710183153 A CN201710183153 A CN 201710183153A CN 107069909 A CN107069909 A CN 107069909A
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- resistance
- diode
- gtr
- triode
- negative pole
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- 238000007600 charging Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 13
- 238000005868 electrolysis reaction Methods 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Classifications
-
- H02J7/027—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
Abstract
The invention discloses a kind of energy-saving mobile phone charger that can be automatically powered off, including GTR electronic switches, charge function circuit, sampling comparison circuit, the GTR drive circuits being sequentially connected.Current signal is converted into voltage signal by the R6 in sampling comparison circuit, because charging terminates rear charging current and can be decreased obviously, it is possible to fully charged to judge whether by the size for comparing sample resistance R6 both end voltages and setting value Vref.If charging complete, sampling comparison circuit can end GTR after exporting a low level signal, signal input GTR drive circuits, civil power is disconnected with charge function circuit.Compared with prior art, the present invention can disconnect civil power automatically after charging terminates, and eliminate open circuit loss, save electric energy, extend the service life of charging equipment, improve electrical safety；Have compact concurrently, advantage with low cost.
Description
Technical field
The present invention relates to charger, more particularly to a kind of energy-saving mobile phone charger that can be automatically powered off after charging terminates.
Background technology
Charger for mobile phone is that high voltage is converted into low-voltage by transformer, if do not pulled out for a long time, it just exists always
Work.Charger does not pull out power consumption in the same old way, the power consumption of charger for mobile phone it is maximum for 308 milliwatts.Charger is in power outlet
Do not pull out, although charger is not switched on mobile phone, but the circuit board of charger internal leads to electricity, also in working condition, still
Electricity can so be consumed.
The current country, which automatically powers off charger, to be had using the making of the principles such as the time relay, light emitting diode or electromagnet
's.Have the shortcomings that it is dumb, non intelligent, such as 1, the person of needing to use actively open or start just it is effective, use not enough
It is convenient；2nd, a time is manually set using timing means, the time arrives, deenergization, due to the uncertainty in charging interval, it is fixed
When the time can only be solved with increase duration power-off the problem of；3rd, using relay, because the volume of relay is larger, it is difficult to will
It is using in charger for mobile phone.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of energy-saving mobile phone charger that can be automatically powered off, the charger
It can be charged or be powered off according to the change of current and voltage signals during charging mobile phone battery.When battery of mobile phone is full of, charger
Interior sampling rate is compared with circuit output low level, by GTR drive circuits control shut-off GTR, so that whole charger circuit breaks
Open, charging terminates.Circuit disconnect after charger internal there is no electric current, internal component no longer consumes electric energy, reach saving electric energy,
Protect the effect of battery.
The technical proposal for solving the technical problem of the invention is as follows：A kind of energy-saving mobile telephone charging that can be automatically powered off
Device, including GTR electronic switches, charge function circuit, sampling comparison circuit, GTR drive circuits, battery；The GTR electronic cuttings
Pass, charge function circuit, sampling comparison circuit, GTR drive circuits are sequentially connected, GTR drive circuits also with GTR electronic switch phases
Even, charge function circuit is also connected with battery；GTR electronic switches are electrically connected with city；Sample the sample resistance R6 in comparison circuit
Current signal is converted into voltage signal, because charging terminates rear charging current and can be decreased obviously, by comparing sampling electricity
The size for hindering R6 both end voltages and setting value Vref is fully charged to judge whether；If fully charged, sampling comparison circuit can be exported
It can end GTR electronic switches after one low level signal, signal input GTR drive circuits, make civil power and charge function electricity
Road disconnects.
Further, the GTR electronic switches are pliotron, selection model 2N1711.
Further, the charge function circuit includes transformer Tl, diode Dl-D3, voltage-stabiliser tube D4, diode D5-
D6, electrochemical capacitor Cl, electrochemical capacitor C3, electrochemical capacitor C5, resistance Rl-R5, electric capacity C2, electric capacity C4, triode Ql-Q2；Two poles
Pipe Dl positive pole is connected with the emitter stage of GTR electronic switches, the colelctor electrodes of GTR electronic switches as charge function circuit positive pole
Incoming end, diode Dl negative pole connects electrochemical capacitor Cl positive pole, resistance R2 one end, resistance R3 one end, electric capacity respectively
C2 one end and one end of transformer Tl primary side winding, the other end of transformer Tl primary side winding connect diode respectively
D2 positive pole, triode Q2 colelctor electrode, the other end and the electric capacity C2 other end of diode D2 negative pole respectively with resistance R3
It is connected, resistance R2 other end base stage respectively with triode Q2, triode Q1 colelctor electrode are connected, triode Q2 emitter stage
It is connected respectively with diode D3 positive pole and resistance R4 one end, diode D3 negative pole is connected with triode Q1 base stage, electricity
Hinder the R4 other end, triode Q1 emitter stage, electrochemical capacitor Cl negative pole, resistance R1 one end and electrochemical capacitor C3 just
One end extremely with transformer Tl feedback winding is connected, and the other end of transformer Tl feedback winding is respectively with diode D5's
Negative pole is connected with electric capacity C4 one end, the negative pole and voltage-stabiliser tube D4 positive pole phase of diode D5 positive pole respectively with electrochemical capacitor C3
Even, the electric capacity C4 other end is connected with resistance R5 one end, and the resistance R5 other end and voltage-stabiliser tube D4 negative pole are and triode
Q2 base stage is connected, the resistance Rl other end as charge function circuit negative pole incoming end, transformer Tl vice-side winding
One end connection diode D6 positive pole, diode D6 negative pole connects the positive pole of electrochemical capacitor C5 positive pole, battery, transformation respectively
The other end of device Tl vice-side winding and electrochemical capacitor C5 negative pole are grounded.
Further, the sampling comparison circuit includes sample resistance R6, amplifier U1A, resistance R10, optocoupler U2, sampling electricity
Resistance R6 one end is connected with electrochemical capacitor C5 negative pole, sample resistance R6 one end respectively with the negative pole of battery and amplifier U1A
Positive input terminal is connected, and amplifier U1A negative terminal inputs an adjustable voltage Vref, the one of amplifier U1A output terminating resistor R10
End, the positive pole of another termination optocoupler U2 of resistance R10 diode, the negative pole ground connection of optocoupler U2 diode.
Further, the GTR drive circuits include diode D7-D10, voltage-stabiliser tube D11, resistance R8-R9, resistance R11-
R12, triode Q4-Q7, electric capacity C6-C7；The collection of resistance R8 one end and diode D7 positive pole with optocoupler U2 triode
Electrode is connected, and diode D7 negative pole connects triode Q7 base stage, triode Q7 colelctor electrode one end respectively with resistance R9, electricity
The base stage for holding R7 one end, triode Q5 base stage and triode Q6 is connected, the electric capacity C7 other end respectively with triode Q5
Colelctor electrode be connected with resistance R12 one end, triode Q4 colelctor electrode, the resistance R8 other end, the resistance R9 other end with
And the resistance R12 other end is connected with+15V voltages VDD, triode Q5 emitter stage is connected with triode Q4 base stage, three
The emitter stage of pole pipe Q4 emitter stage one end respectively with electric capacity C6, resistance R11 one end and triode Q6 is connected, electric capacity C6
Other end positive pole respectively with diode D8, the resistance R11 other end, diode D9 positive pole and diode D10 it is negative
Extremely it is connected, diode D8 negative pole is connected with the colelctor electrode of GTR electronic switches, diode D9 negative pole, diode D10 positive pole
And base stage of the voltage-stabiliser tube D11 positive pole with GTR electronic switches is connected, emitter stage, the triode Q7 of optocoupler U2 triode
Emitter stage, triode Q6 emitter stage, the emitter stage of voltage-stabiliser tube D11 negative pole and GTR electronic switches be grounded.
The present invention has following four feature：First, by extract the variable signal of Current Voltage in battery charging process come
The break-make of charger is controlled to realize, it is different from the simple power-off charger for using the time relay, as long as battery of mobile phone is fully charged
Afterwards, charger will disconnect, it is to avoid battery of mobile phone overcharges phenomenon；Second, control the setting value in circuit signal comparator
Vref can be designed according to the indices of the battery of different model after fully charged, therefore the charger is wide, applicable using scope
Property is strong；3rd, GTR switch are located on total branch road of charger input, therefore charger internal does not have energy consumption when it disconnects, this
Sample not only realizes the function that electricity is completely automatically powered off, and has also reached the effect of energy-conserving and environment-protective；4th, without the use of relay, by
High frequency switch power transforming circuit structure is generally used in the charger of current main flow, with the low voltage control high-pressure side of output end
Break-make realizes that power down function has technological difficulties (especially with Control), because its volume is excessive, it is impossible to solve production
The problem of product are minimized and are miniaturized, it is of the invention then relay need not be used, using GTR electronic switch control circuit break-makes,
Have compact concurrently, advantage with low cost.
Brief description of the drawings
Fig. 1 is theory diagram；
Fig. 2 is the circuit connection diagram of GTR electronic switches and charge function circuit；
Fig. 3 is the circuit diagram of GTR drive circuits.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.
Embodiment：
As shown in figure 1, a kind of energy-saving mobile phone charger that can be automatically powered off, including GTR electronic switches, charge function electricity
Road, sampling comparison circuit, GTR drive circuits, battery；The GTR electronic switches, charge function circuit, sampling comparison circuit,
GTR drive circuits are sequentially connected, and GTR drive circuits are also connected with GTR electronic switches, and charge function circuit is also connected with battery；
GTR electronic switches are electrically connected with city；Current signal is converted into voltage signal by the sample resistance R6 in sampling comparison circuit, because
Charging, which terminates rear charging current, to be decreased obviously, so the size by comparing sample resistance R6 both end voltages and setting value Vref
It is fully charged to judge whether；If fully charged, sampling comparison circuit can export a low level signal, and signal input GTR drives
It can end GTR electronic switches after dynamic circuit, civil power is disconnected with charge function circuit.
R1 is 10 Ω in Fig. 2, and 2W fusing resistor can play overcurrent protection when short trouble occurs for input
Effect.D1, C1 constitute halfwave rectifier filter circuit, input AC220V voltages through D1 halfwave rectifier, C1 filter after obtain about+
300V voltages ,+300V is added to switching tube Q2 colelctor electrodes through switch transformer T1 armature windings L1, while activated resistance R2 is added to
Q2 base stages so that Q2, which enters in lightly conducting state, L1, produces just lower negative induced electromotive force, then is produced in L2 positive under bearing
Induced electromotive force.Induced electromotive force in L2 is through C4, and R5 is positive and negative to be fed to Q2 base stages, and Q2 quickly enters saturation state.In Q2 saturations
Period, due to electric current approximately linear increase in L1, then stable induced electromotive force is produced in L2.This electromotive force is through R4, Q2 base
Pole-transmitting, R5 is charged to C4, and with C4 charging, Q2 base voltages are gradually reduced, until Q2 exits saturation state, flows through L1
In electric current reduce, L1, induced electromotive force polarity inversion in L2, under R5, C4 positive feedback effect, the rapid mountain saturation states of Q2
Retreat to 0 state of cutting.At this moment ,+300V voltages are gradually increasing through R2, R5, L2 to C4 reverse chargings, C4 left end current potentials, when rising to one
During definite value, in the presence of R2, Q2 is turned on again, is repeated said process, is so gone round and begun again, and forms self-oscillation.Led in Q2
During logical, the induced electromotive force polarity in L3 is just, D6 cuts ratio under upper bear；During Q2 cuts ratio, the induced electromotive force pole in L3
Property for upper just lower negative, D6 conductings, be provided out one group of 6V/0.5A power supply.In addition, R4, D3, Q1 constitute current foldback circuit,
If the electric current for flowing through Q2 is excessive, the pressure drop increase on R4, Q1 conductings, Q2 cuts ratio, to prevent than Q2 overcurrent damage.Q4 is GTR, its
Break-make is controlled by Fig. 3 comparison circuits and GTR drive circuits.
Optocoupler and right-hand component are comparison circuit in Fig. 3, and the electric current for charging normal situation is 0.5A, and when battery is full of
Electric current declines can be obvious, can be as judging the foundation whether battery is full of.1 Europe resistance R6 is sealed in charging circuit, is led to
Cross judgement R6 both end voltages to monitor electric current, by the positive input terminal of control source amplifier, the voltage of other end input setting
Vref (adjustable, such as 0.1v).If R6 terminal voltages are more than Vref, positive voltage is exported；If R6 terminal voltages are less than Vref, negative electricity is exported
Pressure.Amplifier model LM358 in comparison circuit.
Optocoupler and right-hand component are GTR drive circuits in Fig. 3, and when comparison circuit exports high level, optocoupler triode is led
Logical, B points are low potential, Q7 cut-offs, Q4, Q5 conductings, and Q6 is reverse-biased and end due to ground level and emitting stage, and GTR is turned on, now, C6
Upper punching has left positive right negative voltage；When comparison circuit exports low level, optocoupler triode is not turned on, and Q7 conductings, Q4, Q5 is cut
Only, Q6 is turned on, and electric capacity C6 discharges by following path, (1) the C6 c through Q6, e, GTR e, b and D10 to C6.This loop is put
Electric current is very short in time, and when GTR is completely switched off, this loop current is zero.(2) c, e, D11 and D10 of the C6 through Q6 be extremely
C6.Due to voltage-stabiliser tube D11 conducting, GTR ground level, always by reverse pressure drop between emitting stage, so as to ensure that GTR reliably ends.
(3) C6 returns C6 through R11.
Claims (5)
1. a kind of energy-saving mobile phone charger that can be automatically powered off, it is characterised in that including GTR electronic switches, charge function circuit,
Sample comparison circuit, GTR drive circuits, battery；The GTR electronic switches, charge function circuit, sampling comparison circuit, GTR drive
Dynamic circuit is sequentially connected, and GTR drive circuits are also connected with GTR electronic switches, and charge function circuit is also connected with battery；GTR electricity
Sub switch is electrically connected with city；Current signal is converted into voltage signal by the sample resistance R6 in sampling comparison circuit, by comparing
Sample resistance R6 both end voltages and setting value Vref size are fully charged to judge whether；If fully charged, comparison circuit is sampled
It can end GTR electronic switches after a low level signal, signal input GTR drive circuits can be exported, make civil power and charging
Functional circuit disconnects.
2. the energy-saving mobile phone charger that can be automatically powered off as claimed in claim 1, it is characterised in that the GTR electronic switches
For pliotron.
3. the energy-saving mobile phone charger that can be automatically powered off as claimed in claim 2, it is characterised in that the charge function circuit
Including transformer Tl, diode Dl-D3, voltage-stabiliser tube D4, diode D5-D6, electrochemical capacitor Cl, electrochemical capacitor C3, electrochemical capacitor
C5, resistance Rl-R5, electric capacity C2, electric capacity C4, triode Ql-Q2；Diode Dl positive pole is connected with the transmitting of GTR electronic switches
Pole, the colelctor electrodes of GTR electronic switches is as the positive pole incoming end of charge function circuit, and diode Dl negative pole connects electrolysis respectively
Electric capacity Cl positive pole, resistance R2 one end, resistance R3 one end, the one of electric capacity C2 one end and transformer Tl primary side winding
End, the other end of transformer Tl primary side winding connects diode D2 positive pole, triode Q2 colelctor electrode, diode D2 respectively
Negative pole be connected respectively with the resistance R3 other end and the electric capacity C2 other end, the resistance R2 other end is respectively with triode Q2's
Base stage, triode Q1 colelctor electrode are connected, triode Q2 emitter stage positive pole respectively with diode D3 and resistance R4 one end
It is connected, diode D3 negative pole is connected with triode Q1 base stage, the resistance R4 other end, triode Q1 emitter stage, electrolysis
One end phase of the positive pole of electric capacity Cl negative pole, resistance R1 one end and electrochemical capacitor C3 with transformer Tl feedback winding
Even, the other end of transformer Tl feedback winding is connected with diode D5 negative pole and electric capacity C4 one end respectively, diode D5
Positive pole be connected respectively with electrochemical capacitor C3 negative pole and voltage-stabiliser tube D4 positive pole, the electric capacity C4 other end and resistance R5 one end
It is connected, the base stage of the resistance R5 other end and voltage-stabiliser tube D4 negative pole with triode Q2 is connected, resistance Rl other end conduct
The negative pole incoming end of charge function circuit, one end connection diode D6 of transformer Tl vice-side winding positive pole, diode D6
Negative pole connect the positive pole of electrochemical capacitor C5 positive pole, battery, the other end and electrolysis electricity of transformer Tl vice-side winding respectively
The negative pole for holding C5 is grounded.
4. the energy-saving mobile phone charger that can be automatically powered off as claimed in claim 3, it is characterised in that the sampling comparison circuit
Including sample resistance R6, amplifier U1A, resistance R10, optocoupler U2, sample resistance R6 one end is connected with electrochemical capacitor C5 negative pole,
Sample resistance R6 one end is connected with the negative pole of battery and amplifier U1A positive input terminal respectively, and amplifier U1A negative terminal inputs one
Adjustable voltage Vref, amplifier U1A output terminating resistor R10 one end, another termination optocoupler U2 of resistance R10 diode is just
Pole, the negative pole ground connection of optocoupler U2 diode.
5. the energy-saving mobile phone charger that can be automatically powered off as claimed in claim 4, it is characterised in that the GTR drive circuits
Including diode D7-D10, voltage-stabiliser tube D11, resistance R8-R9, resistance R11-R12, triode Q4-Q7, electric capacity C6-C7；Resistance R8
One end and diode D7 colelctor electrode of the positive pole with optocoupler U2 triode be connected, diode D7 negative pole meets triode Q7
Base stage, one end, electric capacity R7 one end, triode Q5 base stage and three poles of triode Q7 colelctor electrode respectively with resistance R9
Pipe Q6 base stage is connected, electric capacity C7 other end one end respectively with triode Q5 colelctor electrode and resistance R12, triode Q4
Colelctor electrode is connected, the other end of the resistance R8 other end, the resistance R9 other end and resistance R12 with+15V voltage VDD phases
Even, triode Q5 emitter stage is connected with triode Q4 base stage, triode Q4 emitter stage one end respectively with electric capacity C6, electricity
Hinder R11 one end and triode Q6 emitter stage is connected, positive pole, the resistance of the electric capacity C6 other end respectively with diode D8
The negative pole of the R11 other end, diode D9 positive pole and diode D10 is connected, diode D8 negative pole and GTR electronic switches
Colelctor electrode be connected, the positive pole of diode D9 negative pole, diode D10 positive pole and voltage-stabiliser tube D11 with GTR electronic switches
Base stage be connected, emitter stage, triode Q7 emitter stage, triode Q6 emitter stage, the voltage-stabiliser tube D11 of optocoupler U2 triode
Negative pole and the emitter stages of GTR electronic switches be grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183153.8A CN107069909A (en) | 2017-03-24 | 2017-03-24 | A kind of energy-saving mobile phone charger that can be automatically powered off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710183153.8A CN107069909A (en) | 2017-03-24 | 2017-03-24 | A kind of energy-saving mobile phone charger that can be automatically powered off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107069909A true CN107069909A (en) | 2017-08-18 |
Family
ID=59618089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710183153.8A Pending CN107069909A (en) | 2017-03-24 | 2017-03-24 | A kind of energy-saving mobile phone charger that can be automatically powered off |
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| Country | Link |
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| CN (1) | CN107069909A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004705A (en) * | 2018-07-24 | 2018-12-14 | 成都芯源系统有限公司 | Charge termination control circuit and battery charging circuit |
| CN112994169A (en) * | 2021-03-18 | 2021-06-18 | 苏州美思迪赛半导体技术有限公司 | Load current detection system and detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097841A (en) * | 2010-12-31 | 2011-06-15 | 崧顺电子（深圳）有限公司 | Battery charger |
| CN204030700U (en) * | 2014-08-14 | 2014-12-17 | 钱剑科 | Auto-breaking charger |
| CN204068334U (en) * | 2014-07-29 | 2014-12-31 | 袁玉柱 | Electricity cut-off type charge controller |
| CN105449749A (en) * | 2015-11-30 | 2016-03-30 | 芜湖锐芯电子科技有限公司 | APO (Automatic Power Off) phone charger |
-
2017
- 2017-03-24 CN CN201710183153.8A patent/CN107069909A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102097841A (en) * | 2010-12-31 | 2011-06-15 | 崧顺电子（深圳）有限公司 | Battery charger |
| CN204068334U (en) * | 2014-07-29 | 2014-12-31 | 袁玉柱 | Electricity cut-off type charge controller |
| CN204030700U (en) * | 2014-08-14 | 2014-12-17 | 钱剑科 | Auto-breaking charger |
| CN105449749A (en) * | 2015-11-30 | 2016-03-30 | 芜湖锐芯电子科技有限公司 | APO (Automatic Power Off) phone charger |
Non-Patent Citations (1)
| Title |
|---|
| 汤建新 等: "《电力电子技术试验教程》", 31 March 2007 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109004705A (en) * | 2018-07-24 | 2018-12-14 | 成都芯源系统有限公司 | Charge termination control circuit and battery charging circuit |
| CN112994169A (en) * | 2021-03-18 | 2021-06-18 | 苏州美思迪赛半导体技术有限公司 | Load current detection system and detection method |
| CN112994169B (en) * | 2021-03-18 | 2024-03-29 | 苏州美思迪赛半导体技术有限公司 | Load current detection system and detection method |
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Application publication date: 20170818 |
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