CN205546078U - High -power LED constant current adjustable power circuit and high -power LED lighting device - Google Patents
High -power LED constant current adjustable power circuit and high -power LED lighting device Download PDFInfo
- Publication number
- CN205546078U CN205546078U CN201620232723.9U CN201620232723U CN205546078U CN 205546078 U CN205546078 U CN 205546078U CN 201620232723 U CN201620232723 U CN 201620232723U CN 205546078 U CN205546078 U CN 205546078U
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- 230000001681 protective effect Effects 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 18
- 230000005669 field effect Effects 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 9
- 239000011324 bead Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000005286 illumination Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a high -power LED constant current adjustable power circuit and high -power LED lighting device. Including the transformer, connect in transformer primary coil's protective tube, connect in transformer secondary coil's rectification filter circuit to and constant current IC and current regulation circuit. Wherein, rectification filter circuit's DC voltage output end is connected in order to provide the DC voltage to LED with LED power supply socket's forward transportation output, constant current IC's a IO port is connected with current regulation circuit, constant current IC's the 2nd IO port is connected with LED power supply socket's negative output end, constant current IC's the 3rd IO port ground connection, constant current IC's fourth IO port is connected and is regarded as constant current IC's working power supply in rectification filter circuit's DC voltage output end in order to acquire the DC voltage. Implement the utility model discloses, can provide constant current source, reinforcing LED's life for high -power LED. And can adjust this constant current source's the luminance of size in order to adjust the LED illumination. In addition, can make things convenient for, swiftly control LED's switch more.
Description
Technical field
This utility model relates to LED and drives, more particularly, it relates to a kind of great power LED constant current is adjustable
Power circuit and comprise the high-power LED illuminating device of this power circuit.
Background technology
To have energy-saving and environmental protection, life-span length, fast response time, luminous efficiency high etc. excellent because of it for LED illumination
Gesture, more and more fields tend to use LED as lighting source, relate to field and include industry, the people
With etc..And increasingly deflection uses high light large power type LED light source.For LED one steady
It is extremely important for determine constant-current source being used for the life-span.
In use, because of different ambient light intensities or different application targets, there is also LED
The demand that the brightness of illuminating lamp is adjusted.It is badly in need of the most in the industry one and stablizes adjustable constant-current source, make
Power supply for different great power LEDs.
It addition, present high power constant-current source exist further disadvantage is that do not have exterior I O to control, in industry
Automatization does not realizes auto-switch function when using.
Utility model content
The technical problems to be solved in the utility model is, for high-power LED illuminating lamp need stable and
Adjustable constant current source is with the problem increasing LED service life, it is provided that a kind of great power LED constant current can
Adjust power circuit and high-power LED illuminating device.
This utility model solves its technical problem and be the technical scheme is that a kind of great power LED of structure
Constant current adjustable power circuit, including transformator, is connected to the protective tube of described transformer, company
Being connected to the current rectifying and wave filtering circuit of described transformer secondary coil, the DC voltage of described current rectifying and wave filtering circuit is defeated
Go out end to be connected with the positive output end of LED power supply base to provide DC voltage VCC to LED；
Described great power LED constant current adjustable power circuit also includes: constant current IC U1 and current regulating circuit；
Wherein, an I/O port of described constant current IC U1 is connected to receive electric current with described current regulating circuit
Regulation signal；The 2nd I/O port of described constant current IC U1 is connected with the negative output terminal of LED power supply base
With output current controling signal to LED power supply base；The 3rd I/O port ground connection of described constant current IC U1；
The 4th I/O port of described constant current IC U1 is connected to the DC voltage output end of described current rectifying and wave filtering circuit
To obtain the DC voltage VCC working power as constant current IC U1.
In great power LED constant current adjustable power circuit described in the utility model, also include and described perseverance
That stream IC U1 connects, for being sent to described constant current IC U1's from outside LED ON/OFF instruction
Exterior I/O control circuit.
In great power LED constant current adjustable power circuit described in the utility model, described exterior I/O control
Circuit processed includes optocoupler U2, field effect transistor Q1 and multiple resistance R3, R4, R5；Wherein said optocoupler U2
Input be connected to external control signal input socket, the output head anode of optocoupler U2 connects DC voltage
VCC, the negative pole of output end of optocoupler U2 is connected to ground by the 3rd resistance R3 and the 4th resistance R4, and the
The node that connects of three resistance R3 and the 4th resistance R4 is connected with the grid of field effect transistor Q1, field effect transistor Q1
Drain electrode be connected with the 4th I/O port of described constant current IC U1；The source electrode of field effect transistor Q1 passes through the 5th
The source electrode of resistance R5 ground connection and field effect transistor Q1 is connected to the 5th I/O port of described constant current IC U1,
The 5th I/O port of described constant current IC U1 is made to be in high level when turning on scene effect pipe Q1.
In great power LED constant current adjustable power circuit described in the utility model, current regulating circuit bag
Include the adjustable resistance R1 and current limiting safeguard resistor R2 of mutually series winding.
In great power LED constant current adjustable power circuit described in the utility model, described rectifying and wave-filtering electricity
Road includes bridge rectifier and is connected to the filter capacitor of described bridge rectifier outfan.
In great power LED constant current adjustable power circuit described in the utility model, described filter capacitor bag
Including mutually and connect the first electric capacity C1 and the second electric capacity C2, wherein the second electric capacity C2 is electrochemical capacitor.
In great power LED constant current adjustable power circuit described in the utility model, described transformator is defeated
Enter for 220V alternating voltage, the transformator that is output as 9V alternating voltage.
In great power LED constant current adjustable power circuit described in the utility model, described transformator is defeated
Enter for 110V alternating voltage, the transformator that is output as 9V alternating voltage.
In great power LED constant current adjustable power circuit described in the utility model, described rectifying and wave-filtering electricity
Road is that input is 9V alternating voltage, is output as the current rectifying and wave filtering circuit of 13V DC voltage.
What this utility model solved that its technical problem used another solution is that structure is a kind of high-power
LED light device, including large-power LED lamp bead and for the power circuit powered for described LED lamp bead,
Wherein, described power circuit is great power LED constant current adjustable power circuit as above.
Implement great power LED constant current adjustable power circuit of the present utility model, have the advantages that
Owing to have employed constant current IC, it is possible to provide constant current for great power LED, such that it is able to strengthen LED's
Service life.And the size of this constant current when needed, can be regulated to regulate the bright of LED illumination
Degree.
It addition, in great power LED constant current regulated power supply of the present utility model, owing to adding exterior I/O
Control circuit, in the case of not using LED illumination, can control LED's convenient, quickly
Switch.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the block diagram of great power LED constant current adjustable power circuit of the present utility model；
Fig. 2 is the circuit theory diagrams of great power LED constant current adjustable power circuit of the present utility model.
Detailed description of the invention
As it is shown in figure 1, great power LED constant current adjustable power circuit of the present utility model include transformator,
Current rectifying and wave filtering circuit, LED power supply base, constant current IC, current regulating circuit and exterior I/O control circuit.
Wherein, alternating current (such as 220V or 110V civil power) is by exporting low pressure after transformer pressure-reducing
Alternating current is to current rectifying and wave filtering circuit, then exports unidirectional current after rectified filter circuit rectifying and wave-filtering to LED confession
Electrical socket, and for constant current IC and exterior I/O control circuit.Constant current IC can adjust according to from electric current
The current regulating signal on economize on electricity road, adjusts the switching frequency of LED, thus adjusts the electric current flowing through LED,
Reach constant current purpose.
It addition, exterior I/O control circuit is connected with described constant current IC (U1), for by from outside
The instruction of LED ON/OFF is sent to described constant current IC (U1).Constant current IC can control electricity according to from exterior I/O
The control signal on road, it is achieved opening or closing of LED power supply base output port, thus control opening of LED
And pass.
As selection, in embodiments more of the present utility model, exterior I/O can be not provided with and control electricity
Road, such as, directly can arrange switching device at ac power input end, control opening of LED power supply
And pass, thus control the on an off of LED.
As in figure 2 it is shown, in an embodiment of the present utility model, one end of the primary coil of transformator T1
Connected the live wire input of mains supply by protective tube F1, the zero line that the other end is connected to mains supply is defeated
Enter end；Transformator T1 secondary coil is connected to current rectifying and wave filtering circuit and (includes bridge rectifier D 1 and filtered electrical
Hold C1, C2), the DC voltage output end of current rectifying and wave filtering circuit and the positive output end of LED power supply base J1
Connect to provide DC voltage VCC to LED.
The oneth I/O port of constant current IC U1 (includes that adjustable resistance R1 and current limliting are protected with current regulating circuit
Protect resistance R2) connect to receive current regulating signal；The 2nd I/O port of constant current IC U1 is powered with LED
The negative output terminal of socket connects with output current controling signal to LED power supply base；The of constant current IC U1
Three I/O port ground connection；The 4th I/O port of constant current IC U1 is connected to the unidirectional current of current rectifying and wave filtering circuit
Pressure outfan is to obtain the DC voltage VCC working power as constant current IC U1.
In this embodiment, exterior I/O control circuit includes optocoupler U2, field effect transistor Q1 and multiple resistance
R3, R4, R5 and R6；Wherein the input of optocoupler U2 is connected to external control signal input socket J2,
The output head anode of optocoupler U2 meets DC voltage VCC, and the negative pole of output end of optocoupler U2 passes through the 3rd resistance
R3 and the 4th resistance R4 is connected to ground, and the connection node of the 3rd resistance R3 and the 4th resistance R4 is imitated with field
Should pipe Q1 grid connect, the drain electrode of field effect transistor Q is connected with the 4th I/O port of constant current IC U1；
The source electrode of field effect transistor Q1 is connected to constant current by the source electrode of the 5th resistance R5 ground connection and field effect transistor Q1
The 5th I/O port of IC U1, makes the 5th I/O end of constant current IC U1 with scene effect pipe Q1 when turning on
Mouth is in high level.
Adjustable resistance R1 and current limiting safeguard resistor R2 mutually contacts.The outfan of bridge rectifier is connected to
Filter capacitor, filter capacitor includes the first electric capacity C1 and the second electric capacity C2 that is mutual and that connect, wherein the second electricity
Holding C2 is electrochemical capacitor.
Mains supply can be 220V alternating current, it is also possible to be 110V alternating current.Electricity when mains supply
Pressure is 220V, and transformator is that input is 220V alternating voltage, is output as the transformator of 9V alternating voltage.
When the voltage of mains supply is 110V, transformator is that input is 110V alternating voltage, is output as 9V exchange
The transformator of voltage.Current rectifying and wave filtering circuit is that input is 9V alternating voltage, is output as 13V DC voltage
Current rectifying and wave filtering circuit.
Great power LED constant current adjustable power circuit of the present utility model can be used for high-power LED illuminating device,
This illuminator includes large-power LED lamp bead, and great power LED constant current adjustable power circuit is used for as LED
Lamp bead provides constant current regulated power supply.
Below as a example by 220 mains supplies, great power LED constant current regulated power supply of the present utility model is described
The operation principle of circuit.
220V alternating current power supply live wire, through protective tube, to the primary of transformator, forms loop with zero line.?
When flowing through primary because magnetic field reason induces corresponding voltage at transformer secondary output simultaneously, its electricity
The height of pressure be by just/time the turn ratio determine, the transformer voltage of this circuit is the exchange output of 9V.
Through bridge type rectifier rectification after the 9V alternating voltage obtained, obtain the DC voltage needed, and pass through
Show after filtering that voltage stable for about 13V supplies circuit below and uses.
After obtaining stable voltage, positive source is received LED positive pole and is powered supply constant current IC's simultaneously
4 feet are powered foot, and the negative pole of LED receives the output port of constant current IC, constant current IC 4 foot obtain electric after enter work
Make state.Because 1 foot of constant current IC is the control foot of output electric current, so connecting between 1 foot and ground
One adjustable resistance, it is possible to regulate the output electric current of 2 feet, thus reach to regulate the use electric current of LED
?.
Exterior I/O controls functional realiey, and 5 feet at constant current IC to a high level or low level
Realize opening or closing of output port.During specific works principle when an I/O control signal is given in outside, light
Coupling U2 turns on, because outfan one foot receives positive source, so positive voltage has flowed to resistance through optocoupler
R3, R4, form loop to negative pole, produces pressure drop simultaneously and control the conducting of field effect transistor Q1, field on R4
Because Q1 drain electrode connects positive electricity after effect pipe Q1 conducting, so there being electric current to form loop through R5 to negative pole,
Producing voltage drop on R5, just this terminates to 5 feet of constant current IC so obtaining one on 5 feet simultaneously
Individual voltage, so the LED connect on 2 feet has the electric current of correspondence to flow through lights LED, vice versa, outside reaching
Portion I/O controls purpose.
Above example only for technology of the present utility model design and feature are described, its object is to allow familiar
The personage of technique will appreciate that content of the present utility model and implements accordingly, can not limit this practicality
Novel protection domain.All impartial changes done with this utility model right and modification, all
The covering scope of this utility model claim should be belonged to.
Claims (10)
1. a great power LED constant current adjustable power circuit, including transformator, is connected to described transformator
The protective tube of primary coil, being connected to the current rectifying and wave filtering circuit of described transformer secondary coil, described rectification is filtered
The DC voltage output end of wave circuit is connected with the positive output end of LED power supply base to provide unidirectional current to LED
Pressure (VCC)；
It is characterized in that, described great power LED constant current adjustable power circuit also includes: constant current IC (U1)
And current regulating circuit；Wherein, an I/O port of described constant current IC (U1) regulates with described electric current
Circuit connects to receive current regulating signal；2nd I/O port of described constant current IC (U1) supplies with LED
The negative output terminal of electrical socket connects with output current controling signal to LED power supply base；Described constant current IC (U1)
The 3rd I/O port ground connection；4th I/O port of described constant current IC (U1) is connected to described rectification filter
The DC voltage output end of wave circuit is to obtain the DC voltage (VCC) the work electricity as constant current IC (U1)
Source.
Great power LED constant current adjustable power circuit the most according to claim 1, it is characterised in that
That also include being connected with described constant current IC (U1), for being sent to from outside LED ON/OFF instruction
Exterior I/O the control circuit of described constant current IC (U1).
Great power LED constant current adjustable power circuit the most according to claim 2, it is characterised in that
Described exterior I/O control circuit include optocoupler (U2), field effect transistor (Q1) and multiple resistance (R3, R4,
R5)；The input of wherein said optocoupler (U2) is connected to external control signal input socket, optocoupler (U2)
Output head anode connect DC voltage (VCC), the negative pole of output end of optocoupler (U2) pass through the 3rd resistance (R3)
It is connected to ground with the 4th resistance (R4), and the 3rd resistance (R3) and the connection node of the 4th resistance (R4)
It is connected with the grid of field effect transistor (Q1), the drain electrode of field effect transistor (Q1) and described constant current IC (U1)
The 4th I/O port connect；The source electrode of field effect transistor (Q1) passes through the 5th resistance (R5) ground connection and field
The source electrode of effect pipe (Q1) is connected to the 5th I/O port of described constant current IC (U1), with scene effect
The 5th I/O port of described constant current IC (U1) is made to be in high level during pipe (Q1) conducting.
Great power LED constant current adjustable power circuit the most according to claim 3, it is characterised in that electricity
Stream regulation circuit includes adjustable resistance (R1) and the current limiting safeguard resistor (R2) mutually contacted.
Great power LED constant current adjustable power circuit the most according to any one of claim 1 to 4,
It is characterized in that, described current rectifying and wave filtering circuit includes bridge rectifier and is connected to the output of described bridge rectifier
The filter capacitor of end.
Great power LED constant current adjustable power circuit the most according to claim 5, it is characterised in that
Described filter capacitor includes mutually and connects the first electric capacity (C1) and the second electric capacity (C2), wherein the second electric capacity
(C2) it is electrochemical capacitor.
Great power LED constant current adjustable power circuit the most according to claim 4, it is characterised in that
Described transformator is that input is 220V alternating voltage, is output as the transformator of 9V alternating voltage.
Great power LED constant current adjustable power circuit the most according to claim 4, it is characterised in that
Described transformator is that input is 110V alternating voltage, is output as the transformator of 9V alternating voltage.
9., according to the great power LED constant current adjustable power circuit described in claim 7 or 8, its feature exists
In, described current rectifying and wave filtering circuit is that input is 9V alternating voltage, is output as the rectification filter of 13V DC voltage
Wave circuit.
10. a high-power LED illuminating device, including large-power LED lamp bead and for for described LED
The power circuit that lamp bead is powered, it is characterised in that described power circuit is as arbitrary in claim 1 to 9
Great power LED constant current adjustable power circuit described in Xiang.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620232723.9U CN205546078U (en) | 2016-03-23 | 2016-03-23 | High -power LED constant current adjustable power circuit and high -power LED lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620232723.9U CN205546078U (en) | 2016-03-23 | 2016-03-23 | High -power LED constant current adjustable power circuit and high -power LED lighting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205546078U true CN205546078U (en) | 2016-08-31 |
Family
ID=56784849
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620232723.9U Expired - Fee Related CN205546078U (en) | 2016-03-23 | 2016-03-23 | High -power LED constant current adjustable power circuit and high -power LED lighting device |
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| Country | Link |
|---|---|
| CN (1) | CN205546078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106550507A (en) * | 2016-11-03 | 2017-03-29 | 中山市荣亮照明有限公司 | LED lighting down lamp |
| CN112235893A (en) * | 2020-10-30 | 2021-01-15 | 株洲中车时代电气股份有限公司 | Underwater illumination control device |
-
2016
- 2016-03-23 CN CN201620232723.9U patent/CN205546078U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106550507A (en) * | 2016-11-03 | 2017-03-29 | 中山市荣亮照明有限公司 | LED lighting down lamp |
| CN112235893A (en) * | 2020-10-30 | 2021-01-15 | 株洲中车时代电气股份有限公司 | Underwater illumination control device |
| CN112235893B (en) * | 2020-10-30 | 2022-04-12 | 株洲中车时代电气股份有限公司 | Underwater illumination control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 floor 1, No.2, Changyi industrial factory, No.1, Lirong Road, Xinshi community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Zhixin Precision Instrument Co.,Ltd. Address before: 518000 3rd floor, Section A, building a, Sunshine Industrial Zone, No.2-3, Hezhou South Industrial Zone, Xixiang, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN INTELLIGENT PRECISION INSTRUMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |