CN107820348A - A kind of linear full voltage frequency-conversion constant-current circuit and there is its LED - Google Patents
A kind of linear full voltage frequency-conversion constant-current circuit and there is its LED Download PDFInfo
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- CN107820348A CN107820348A CN201711265867.XA CN201711265867A CN107820348A CN 107820348 A CN107820348 A CN 107820348A CN 201711265867 A CN201711265867 A CN 201711265867A CN 107820348 A CN107820348 A CN 107820348A
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The invention provides a kind of linear full voltage frequency-conversion constant-current circuit and there is its LED, including：Rectification circuit；At least one load connects with the output end of the rectification circuit；Two symmetrically arranged first switch constant current tube IC1 and second switch constant current tube IC2；First switch constant current tube IC1 S ends and second switch constant current tube IC2 S ends are respectively connecting to the input of load component；First switch constant current tube IC1 D ends are connected to the output end of the rectification circuit by charge and discharge capacitance C1, and the D ends of the second switch constant current tube IC2 are connected to the output end of the rectification circuit；For the present invention using two switch constant current tubes, control electric capacity changes according to alternating voltage carries out discharge and recharge switching, realizes automatic frequency-conversion and the function of constant current in the case of 90 300V exchange full voltages.In the charge and discharge capacitance discharge and recharge handoff procedure of the present invention so that load component is operated in switched linear constant current state, substantially improves line efficiency and input power factor.
Description
Technical field
The present invention relates to the output control circuit field of AC power, and in particular to a kind of linear full voltage frequency-conversion constant-current electricity
Road and there is its LED.
Background technology
LED is as a kind of efficient new light sources, because with long lifespan, energy consumption is low, energy-conserving and environment-protective, is just being widely used in each
Field illuminates.Using single-chip microcomputer and embedded software PWM and constant-current driven chip come by way of controlling LED lamp brightness
Gradually it is promoted.But because the running frequency of usual single-chip microcomputer receives limitation, and the PWM frequency and light modulation precision used by
It is limited to the running frequency of single-chip microcomputer, i.e. PWM frequency is multiplied by light modulation precision and is necessarily less than equal to single-chip microcomputer running frequency.Therefore it is existing
Control the system of LED lamp brightness to have the following disadvantages by PWM and constant-current driven chip using single-chip microcomputer, be first
Stroboscopic during light fixture high brightness be present, naked eyes are discernable and the obvious bright striped that secretly interlocks can be left on digital image device；
Next to that perceptible brightness fluctuation can be produced because precision is inadequate when low-light level changes, brightness adjustment effect is influenceed.Also
It is to say, cost is high by the way of single-chip microcomputer and embedded software are to light fixture frequency modulation, and effect is poor, using linear constant current driving power
It is cost-effective, but can not realize that the globalization of 110-220VAC Width funtions is general as Switching Power Supply, there is an urgent need to improved.
The content of the invention
To solve the above problems, the invention provides a kind of linear full voltage frequency-conversion constant-current circuit and there is its LED.
For the present invention using two switch constant current tubes, control electric capacity changes according to alternating voltage carries out discharge and recharge switching, realizes 90-300V
Automatic frequency-conversion and the function of constant current in the case of exchange full voltage, and cost is low, it is easy to spread.Filled in the charge and discharge capacitance of the present invention
In electric discharge handoff procedure so that load component is operated in switched linear constant current state, substantially improves line efficiency and input work
Rate factor.
To realize the technical purpose, the technical scheme is that：A kind of linear full voltage frequency-conversion constant-current circuit, bag
Include：
Rectification circuit 1, the input of the rectification circuit are connected to civil power；
The output end of load component 2, including at least one load, the output end of the load component and the rectification circuit
Connection；
Two symmetrically arranged first switch constant current tube IC1 and second switch constant current tube IC2；
The S ends of the first switch constant current tube IC1 and second switch constant current tube IC2 S ends are respectively connecting to load component
Input；The D ends of the first switch constant current tube IC1 are connected to the output of the rectification circuit by charge and discharge capacitance C1
End, the D ends of the second switch constant current tube IC2 are connected to the output end of the rectification circuit；The first switch constant current tube IC1
CS ends and second switch constant current tube IC2 CS ends interconnect, and be grounded by 3rd resistor R3.
Further, the output end connection of the rectification circuit sets output voltage detection resistance and is grounded；
Output voltage detection resistance includes the 4th resistance R4 and the 5th resistance R5 of series connection；
The FB ends of the second switch constant current tube IC2 are connected between the 4th resistance R4 and the 5th resistance R5.
Further, it is connected with the first guiding between the D ends of the first switch constant current tube IC1 and the charge and discharge capacitance C1
Diode D1.
Further,
Load component one end connection sets the second steering diode D2；
Second steering diode D2 is connected between the charge and discharge capacitance C1 and the first steering diode D1.
Further,
When the load component is a load, the input of the load component is the anode of the load, is loaded
The output end of component is this negative terminal；
When the load component includes the load of multiple series connection, the input of the load component is first load
Anode, the output end of the load component are the negative terminal of last load.
Further, the output voltage detection resistance,
When Output Voltage in Rectified Circuits is increased to during 140V from 90V, by the second switch constant current tube IC2's
FB terminal voltages are clamped to low level；
When Output Voltage in Rectified Circuits is increased to during 180V, by the FB ends of the second switch constant current tube IC2
Voltage clamping is to high level.
Further, when second switch constant current tube IC2 FB terminal voltages are low level, the 3rd resistor R3 opens second
The CS terminal voltages for closing constant current tube are clamped to high level；
When second switch constant current tube IC2 FB terminal voltages are high level, the 3rd resistor R3 is by second switch constant current
The CS terminal voltages of pipe are clamped to low level.
As a kind of preferred embodiment of the present invention, based on the above, unlike, described second is oriented to two poles
Connection sets voltage detection resistances and is grounded between pipe D2 and the charge and discharge capacitance C1；
The voltage detection resistances include the first resistor R1 and second resistance R2 of series connection；
The FB ends of the first switch constant current tube IC1 are connected between the 1st resistance R1 and second resistance R2.
The voltage detection resistances, voltage is 240V between the second steering diode D2 and the charge and discharge capacitance C1
When, the FB terminal voltages of the first switch constant current tube IC1 are clamped to high level.Increase in Output Voltage in Rectified Circuits from 240V
During to during 300V, as shown in figure 5, first switch constant current tube IC1 FB ends are high level, now first switch constant current tube
CS terminal voltages be 0, the CS terminal voltages of second switch constant current tube are not 0, therefore first switch constant current tube IC1 is off,
Second switch constant current tube IC2 is in constant current conducting state.Charge and discharge capacitance C1 is completely in discharge condition, and charge and discharge capacitance C1 leads to
IC2 D-S ends, load component, the loop of the second steering diode D2 compositions is crossed, load component is discharged.It should be noted that
When electric capacity is discharged to voltage and is less than 240V, IC1 and IC2 CS ends electric current can change so that the state of two switch constant current tubes
Change；Likewise it is preferred that, when Output Voltage in Rectified Circuits increases to 270V, from the LED load component both ends in Fig. 5
The waveform that voltage and current waveform can be seen that in 250H in Fig. 4 is divided down to 400Hz.
A kind of LED, including a kind of above-mentioned linear full voltage frequency-conversion constant-current circuit, it is different but, the load component
Including at least one LED.
The beneficial effects of the present invention are：
For the present invention using two switch constant current tubes, control electric capacity changes according to alternating voltage carries out discharge and recharge switching, realizes
Automatic frequency-conversion and the function of constant current in the case of 90-300V exchange full voltages, and cost is low, it is easy to spread.
In the charge and discharge capacitance discharge and recharge handoff procedure of the present invention so that load component is operated in switched linear constant current shape
State, substantially improve line efficiency and input power factor.
Brief description of the drawings
Fig. 1 is the linear full voltage frequency-conversion constant-current circuit theory diagrams of the present invention；
Fig. 2 is oscillogram of the input voltage of the present invention in 110V；
Fig. 3 is oscillogram of the input voltage of the present invention in 150V；
Fig. 4 is oscillogram of the input voltage of the present invention in 220V；
Fig. 5 is oscillogram of the input voltage of the present invention in 270V；
Fig. 6 is the pin configuration figure of the switch constant current tube of the present invention.
Embodiment
Technical scheme will be clearly and completely described below.
It should be noted that as shown in fig. 6, switch constant current tube as the personnel in technical field for, be one
Kind common knowledge, it includes S ends, D ends, CS ends, FB ends；And S ends are grounded, it is (disconnected to be in cut-off for D-S ends when FB ends are high level
Open) state, on the contrary conducting；When CS ends are low level, switch constant current tube is on off state (determining its state by FB ends), otherwise is
Constant current state.
A kind of linear full voltage frequency-conversion constant-current circuit, as shown in figure 1, including：
Rectification circuit, the input of the rectification circuit are connected to civil power；
The output end of load component, including at least one load, the output end of the load component and the rectification circuit
Connection；
Two symmetrically arranged first switch constant current tube IC1 and second switch constant current tube IC2；
The S ends of the first switch constant current tube IC1 and second switch constant current tube IC2 S ends are respectively connecting to load component
Input；The D ends of the first switch constant current tube IC1 are connected to the output of the rectification circuit by charge and discharge capacitance C1
End, the D ends of the second switch constant current tube IC2 are connected to the output end of the rectification circuit；The first switch constant current tube IC1
CS ends and second switch constant current tube IC2 CS ends interconnect, and be grounded by 3rd resistor R3.
Further, the output end connection of the rectification circuit sets output voltage detection resistance and is grounded；
Output voltage detection resistance includes the 4th resistance R4 and the 5th resistance R5 of series connection；
The FB ends of the second switch constant current tube IC2 are connected between the 4th resistance R4 and the 5th resistance R5.
Further, it is connected with the first guiding between the D ends of the first switch constant current tube IC1 and the charge and discharge capacitance C1
Diode D1.
Further,
Load component one end connection sets the second steering diode D2；
Second steering diode D2 is connected between the charge and discharge capacitance C1 and the first steering diode D1.
Further,
When the load component is a load, the input of the load component is the anode of the load, is loaded
The output end of component is this negative terminal；
When the load component includes the load of multiple series connection, the input of the load component is first load
Anode, the output end of the load component are the negative terminal of last load.
Further, the output voltage detection resistance,
When Output Voltage in Rectified Circuits is increased to during 140V from 90V, by the second switch constant current tube IC2's
FB terminal voltages are clamped to low level；As shown in Fig. 2 when input voltage is 90-140VAC, second switch constant current tube IC2 FB
Terminal voltage is less than low level, and now the CS terminal voltages of the first and second switch constant current tubes are high level state, therefore switch constant current
Pipe IC1 and IC2, are in conducting state.The output end voltage of rectification circuit is divided into two branch roads and flows into load component as load confession
Electricity, a branch road flow into load component by IC2 D-S ends, and another branch road flows into load group by charge and discharge capacitance C1 and IC1
Part, while power supply for load component, charge and discharge capacitance is charged；Preferably, 110V is increased in Output Voltage in Rectified Circuits
When, from the LED load component both end voltage in Fig. 2 and current waveform can be seen that 50Hz commercial power rectification after be 100Hz, by
It is square wave by rectified voltage, current filtering in the charging of charging capacitor.
When Output Voltage in Rectified Circuits is increased to during 180V, by the FB ends of the second switch constant current tube IC2
Voltage clamping is to high level.As shown in figure 3, when input voltage is 140-180VAC, second switch constant current tube IC2 FB ends electricity
Pressure is between low and high level, and now the CS terminal voltages of the first and second switch constant current tubes are between low and high level, therefore are opened
It is constant current conducting state to close constant current tube IC1 and IC2, that is to say, that charge and discharge capacitance is in the switching state being charged and discharged.It is whole
It is load supplying that the output end voltage of current circuit, which is divided into two branch roads to flow into load component, and a branch road is flowed into negative by IC2 D-S ends
Component is carried, another branch road flows into load component by charge and discharge capacitance C1 and IC1, is powered for load component and to charge and discharge capacitance
Charging；With the increase of input voltage, under the metering function of CS terminal voltages, charging current constantly reduces, and is reduced to certain
After value, charge and discharge capacitance C1 by IC2 D-S ends, load component, the second steering diode D2 form loop, to load group
Part discharges, and completes the switching of charge/discharge；Preferably, when Output Voltage in Rectified Circuits increases to 150V, born from the LED in Fig. 3
The waveform that load component both end voltage and current waveform can be seen that 100Hz in fig. 2 is divided down to 200Hz.
When Output Voltage in Rectified Circuits is increased to during 240V, as shown in figure 4, being 180- in input voltage
During 240VAC, second switch constant current tube IC2 FB terminal voltages are in high level state, now first and second switch constant current tubes
CS terminal voltages switch constant current tube IC1 and IC2 still in constant current conducting state between 0V and low level, the difference is that filling
Discharge capacity is in the switching state of electric discharge and charging：Charge and discharge capacitance C1 is oriented to by IC2 D-S ends, load component, second
The loop of diode D2 compositions, discharges load component；With the increase of input voltage, under the metering function of CS terminal voltages,
Discharge stream constantly reduces, and after being reduced to certain value, rectification circuit charges to charge and discharge capacitance；Likewise it is preferred that, in rectified current
When road output voltage increases to 220V, it can be seen that in figure 3 from the LED load component both end voltage in Fig. 4 and current waveform
Waveform in 200Hz is divided down to 250Hz.
Further, when second switch constant current tube IC2 FB terminal voltages are low level, the 3rd resistor R3 opens second
The CS terminal voltages for closing constant current tube are clamped to high level；
When second switch constant current tube IC2 FB terminal voltages are high level, the 3rd resistor R3 is by second switch constant current
The CS terminal voltages of pipe are clamped to low level.
As a kind of preferred embodiment of the present invention, based on the above, unlike, described second is oriented to two poles
Connection sets voltage detection resistances and is grounded between pipe D2 and the charge and discharge capacitance C1；
The voltage detection resistances include the first resistor R1 and second resistance R2 of series connection；
The FB ends of the first switch constant current tube IC1 are connected between the 1st resistance R1 and second resistance R2.
The voltage detection resistances, voltage is 240V between the second steering diode D2 and the charge and discharge capacitance C1
When, the FB terminal voltages of the first switch constant current tube IC1 are clamped to high level.Increase in Output Voltage in Rectified Circuits from 240V
During to during 300V, as shown in figure 4, first switch constant current tube IC1 FB terminal voltages are more than high level, now first switch
The CS terminal voltages of constant current tube are 0, and the CS terminal voltages of second switch constant current tube are not 0, therefore first switch constant current tube IC1 is in and disconnected
State, second switch constant current tube IC2 are in constant current conducting state, and charge and discharge capacitance C1 is completely in discharge condition：Pass through IC2's
D-S ends, load component, the loop of the second steering diode D2 compositions, discharge load component.It should be noted that in electric capacity
When being discharged to voltage and being less than 240V, IC1 and IC2 CS ends electric current can change so that the states of two switch constant current tubes change
Become；Likewise it is preferred that, when Output Voltage in Rectified Circuits increases to 270V, from the LED load component both end voltage in Fig. 5 and
The waveform that current waveform can be seen that 250Hz in Fig. 4 is divided down to 400Hz.
A kind of LED, including a kind of above-mentioned linear full voltage frequency-conversion constant-current circuit, it is different but, the load component
Including at least one LED.
For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also do
Go out several modifications and improvements, these belong to protection scope of the present invention.
Claims (10)
1. a kind of linear full voltage frequency-conversion constant-current circuit, including：
Rectification circuit, the input of the rectification circuit are connected to civil power；
Load component, including at least one load, the output end of the load component connect with the output end of the rectification circuit；
Two symmetrically arranged first switch constant current tube IC1 and second switch constant current tube IC2；
Characterized in that, the S ends of the first switch constant current tube IC1 and second switch constant current tube IC2 S ends are respectively connecting to bear
Carry the input of component；The D ends of the first switch constant current tube IC1 are connected to the rectification circuit by charge and discharge capacitance C1
Output end, the D ends of the second switch constant current tube IC2 are connected to the output end of the rectification circuit；The first switch constant current
Pipe IC1 CS ends and second switch constant current tube IC2 CS ends interconnect, and are grounded by 3rd resistor R3.
2. a kind of linear full voltage frequency-conversion constant-current circuit according to claim 1, it is characterised in that the rectification circuit
Output end connection sets output voltage detection resistance and is grounded；
Output voltage detection resistance includes the 4th resistance R4 and the 5th resistance R5 of series connection；
The FB ends of the second switch constant current tube IC2 are connected between the 4th resistance R4 and the 5th resistance R5.
3. a kind of linear full voltage frequency-conversion constant-current circuit according to claim 1, it is characterised in that the first switch is permanent
The first steering diode D1 is connected between flow tube IC1 D ends and the charge and discharge capacitance C1.
A kind of 4. linear full voltage frequency-conversion constant-current circuit according to claim 3, it is characterised in that
Load component one end connection sets the second steering diode D2；
Second steering diode D2 is connected between the charge and discharge capacitance C1 and the first steering diode D1.
5. a kind of linear full voltage frequency-conversion constant-current circuit according to claim 3, it is characterised in that described second is oriented to two
Connection sets voltage detection resistances and is grounded between pole pipe D2 and the charge and discharge capacitance C1；
The voltage detection resistances include the first resistor R1 and second resistance R2 of series connection；
The FB ends of the first switch constant current tube IC1 are connected between the 1st resistance R1 and second resistance R2.
A kind of 6. linear full voltage frequency-conversion constant-current circuit according to claim 1, it is characterised in that
When the load component is a load, the input of the load component is the anode of the load, institute's load component
Output end be this negative terminal；
When the load component includes the load of multiple series connection, the input of the load component loads just for first
End, the output end of the load component are the negative terminal of last load.
A kind of 7. linear full voltage frequency-conversion constant-current circuit according to claim 2, it is characterised in that the output voltage inspection
Measuring resistance,
When Output Voltage in Rectified Circuits is 140V, the FB terminal voltages of the second switch constant current tube IC2 are clamped to low level；
When Output Voltage in Rectified Circuits is 180V, the FB terminal voltages of the second switch constant current tube IC2 are clamped to high level.
A kind of 8. linear full voltage frequency-conversion constant-current circuit according to claim 5, it is characterised in that
The voltage detection resistances,
When voltage is 240V between the second steering diode D2 and the charge and discharge capacitance C1, by the first switch constant current tube
IC1 FB terminal voltages are clamped to high level.
A kind of 9. linear full voltage frequency-conversion constant-current circuit according to any one of claim 7 or 8, it is characterised in that
When second switch constant current tube IC2 FB terminal voltages are low level, the 3rd resistor R3 is by second switch constant current tube
CS terminal voltages are clamped to high level；
When second switch constant current tube IC2 FB terminal voltages are high level, the 3rd resistor R3 is by second switch constant current tube
CS terminal voltages are clamped to low level.
10. a kind of LED, including a kind of linear full voltage frequency-conversion constant-current circuit described in claim any one of 1-9, its feature
It is, the load component includes at least one LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265867.XA CN107820348B (en) | 2017-12-05 | 2017-12-05 | Linear full-voltage variable-frequency constant-current circuit and LED lamp with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711265867.XA CN107820348B (en) | 2017-12-05 | 2017-12-05 | Linear full-voltage variable-frequency constant-current circuit and LED lamp with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107820348A true CN107820348A (en) | 2018-03-20 |
| CN107820348B CN107820348B (en) | 2023-11-24 |
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| CN201711265867.XA Active CN107820348B (en) | 2017-12-05 | 2017-12-05 | Linear full-voltage variable-frequency constant-current circuit and LED lamp with same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082701A1 (en) * | 2018-10-26 | 2020-04-30 | 苏州菲达旭微电子有限公司 | Half-voltage power supply ripple-free led circuit |
| CN111385937A (en) * | 2019-11-20 | 2020-07-07 | 宁波凯耀电器制造有限公司 | Miniaturized intelligent lamp |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152195A1 (en) * | 2012-11-14 | 2014-06-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Method for Overcoming Excessively High Temperature of Constant Current Driving Chip and LED Light Bar Driving Circuit |
| CN104093252A (en) * | 2014-07-16 | 2014-10-08 | 浙江大学 | Non-strobe non-isolated LED constant-current driving circuit |
| CN105392256A (en) * | 2015-12-04 | 2016-03-09 | 佛山电器照明股份有限公司 | LED linear current-constant light modulation circuit |
| CN205883635U (en) * | 2016-06-28 | 2017-01-11 | 深圳市明微电子股份有限公司 | Linear LED switch mixing of colors drive circuit that adjusts luminance in step |
| CN106954313A (en) * | 2017-05-03 | 2017-07-14 | 南京微客力科技有限公司 | A kind of LED linear constant-current drive circuit of self adaptation line voltage |
| CN206674250U (en) * | 2017-03-28 | 2017-11-24 | 深圳市明微电子股份有限公司 | A kind of controllable silicon light modulation linear constant current circuit |
| CN207491269U (en) * | 2017-12-05 | 2018-06-12 | 苏州菲达旭微电子有限公司 | A kind of linear full voltage frequency-conversion constant-current circuit and with its LED light |
-
2017
- 2017-12-05 CN CN201711265867.XA patent/CN107820348B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140152195A1 (en) * | 2012-11-14 | 2014-06-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Method for Overcoming Excessively High Temperature of Constant Current Driving Chip and LED Light Bar Driving Circuit |
| CN104093252A (en) * | 2014-07-16 | 2014-10-08 | 浙江大学 | Non-strobe non-isolated LED constant-current driving circuit |
| CN105392256A (en) * | 2015-12-04 | 2016-03-09 | 佛山电器照明股份有限公司 | LED linear current-constant light modulation circuit |
| CN205883635U (en) * | 2016-06-28 | 2017-01-11 | 深圳市明微电子股份有限公司 | Linear LED switch mixing of colors drive circuit that adjusts luminance in step |
| CN206674250U (en) * | 2017-03-28 | 2017-11-24 | 深圳市明微电子股份有限公司 | A kind of controllable silicon light modulation linear constant current circuit |
| CN106954313A (en) * | 2017-05-03 | 2017-07-14 | 南京微客力科技有限公司 | A kind of LED linear constant-current drive circuit of self adaptation line voltage |
| CN207491269U (en) * | 2017-12-05 | 2018-06-12 | 苏州菲达旭微电子有限公司 | A kind of linear full voltage frequency-conversion constant-current circuit and with its LED light |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020082701A1 (en) * | 2018-10-26 | 2020-04-30 | 苏州菲达旭微电子有限公司 | Half-voltage power supply ripple-free led circuit |
| CN111385937A (en) * | 2019-11-20 | 2020-07-07 | 宁波凯耀电器制造有限公司 | Miniaturized intelligent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107820348B (en) | 2023-11-24 |
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