CN103068113B - Light emitting diode (LED) linear sectional type power supply - Google Patents
Light emitting diode (LED) linear sectional type power supply Download PDFInfo
- Publication number
- CN103068113B CN103068113B CN201210563845.2A CN201210563845A CN103068113B CN 103068113 B CN103068113 B CN 103068113B CN 201210563845 A CN201210563845 A CN 201210563845A CN 103068113 B CN103068113 B CN 103068113B
- Authority
- CN
- China
- Prior art keywords
- triode
- control signal
- led
- string
- string led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 claims abstract description 5
- 101100168115 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) con-6 gene Proteins 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
Classifications
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The invention discloses a light emitting diode (LED) linear sectional type power supply which comprises a power supply, a first string of LEDs, a second string of LEDs, a third string of LEDs, a first triode, a second triode and a third triode. The LED linear sectional type power supply is characterized by further comprising a fourth triode, a fifth triode, a sixth triode, a first diode, a second diode and a third diode, wherein the first triode, the second triode, the third triode, the fourth triode, the fifth triode and the sixth triode are all NPN type triodes. By controlling connection and disconnection of the first triode, the second triode, the third triode, the fourth triode, the fifth triode and the sixth triode in three cycles, the LED linear sectional type power supply enables the first string of LEDs, the second string of LEDs and the third string of LEDs to work for the same time in the three cycles in the whole working process, and solves the problem of uneven light distribution due to the fact that a certain string of LEDs works for an overlong time.
Description
Technical field
The present invention relates to LED linear power supply, particularly a kind of LED linear segmented power supply.
Background technology
The application of LED illumination is in the market more and more extensive, and the power supply of LED product is also more and more abundanter.Existing LED linear segmented power supply is shown in Figure 1, and its course of work is: when power supply DB1 output voltage is lower than Ua, triode Q1, Q2, Q3 conducting, L1 string LED work, power supply DB1 output voltage lower than Ub higher than Ua time, triode Q1 not conducting, triode Q2, Q3 conducting, L1, L2 string LED work, when power supply DB1 output voltage is higher than Ub: triode Q1, Q2 not conducting, triode Q3 conducting, L1, L2, L3 string LED work.
Circuit simulates resistive load without the need to electrochemical capacitor above, and power factor (PF) is higher, and the whole lamp life-span also can not be limited by electric capacity, and advantage is a lot; But this circuit also has weak point.
LED linear segmented power supply above can find out that the LED of L1 string in a cycle is in opening all the time, the LED of L2 string starts working when voltage is greater than Ua, L3 string is then start working when voltage is greater than Ub, 3 string LED operating times are different, then cause 3 string LED light to decline difference, the time, slightly long light there will be obvious inhomogeneities.
Summary of the invention
Technical problem to be solved by this invention is the LED linear segmented power supply providing a kind of improvement for the deficiencies in the prior art.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
LED linear segmented power supply, comprises power supply, first string LED, second string LED, 3rd string LED, first triode, second triode, 3rd triode, it also comprises the 4th triode, 5th triode, 6th triode and the first diode, second diode, 3rd diode, wherein the output negativing ending grounding of power supply, the output plus terminal of power supply connects the first triode, the collector electrode of the second triode and the 3rd triode, the first triode, second triode, 3rd triode, 4th triode, 5th triode, the base stage of the 6th triode connects the first control signal respectively, second control signal, 3rd control signal, 4th control signal, 5th control signal and the 6th control signal, the emitter of the first triode connects the positive pole of the first string LED and the negative pole of the 3rd diode, the emitter of the second triode connects the positive pole of the second string LED and the negative pole of the first diode, the emitter of the 3rd triode connects the 3rd string positive pole of LED and the negative pole of the second diode, the 4th triode, 5th triode, the equal ground connection of emitter of the 6th triode, the collector electrode of the 4th triode connects the 3rd string negative pole of LED and the positive pole of the 3rd diode, the collector electrode of the 5th triode connects the first string negative pole of LED and positive pole of the first diode, the collector electrode of the 6th triode connects the second string negative pole of LED and positive pole of the second diode, first triode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 6th triode are NPN type triode,
The control method of this linear circuit is as follows:
When first cycle of electric power output voltage arrives, the first control signal inputs a positive bias and makes the first triode ON, and the second control signal and the 3rd control signal input without positive bias, the second triode and the 3rd triode not conducting; When the voltage of first cycle is lower than the first voltage, 4th control signal, the 5th control signal and the 6th control signal all input a positive bias, 4th triode, the 5th triode, the equal conducting of the 6th triode, the first string LED work, and the second string LED and the 3rd string LED does not work; When the voltage of first cycle higher than the first voltage lower than the second voltage time, 4th control signal does not input a positive bias, 4th triode not conducting, and the 5th control signal and the 6th control signal all input a positive bias, make the 5th triode and the 6th triode ON, first string LED and second string LED work, and the 3rd string LED does not work; When the voltage of first cycle is higher than the second voltage, 4th control signal and the 5th control signal do not input a positive bias, 4th triode and the 5th triode not conducting, and the 6th control signal inputs a positive bias, make the 6th triode ON, the first string LED, the second string LED, the 3rd string LED all work;
When second cycle of electric power output voltage arrives, the second control signal inputs a positive bias, make the second triode ON, and the first control signal and the 3rd control signal does not all input a positive bias, makes the first triode and the 3rd triode not conducting; When the voltage of second cycle is lower than the first voltage, 4th control signal, the 5th control signal, the 6th control signal all input a positive bias, make the 4th triode, the 5th triode and the equal conducting of the 6th triode, the second string LED work, and the first string LED and the 3rd string LED does not work; When the voltage of second cycle higher than the first voltage lower than the second voltage time, 5th control signal does not input a positive bias, 5th triode not conducting, 6th control signal and the 4th control signal all input a positive bias, make the 6th triode and the 4th triode ON, second string LED and the 3rd string LED work, and the first string LED does not work; When the voltage of second cycle is higher than the second voltage, 5th control signal and the 6th control signal all do not input a positive bias, make the 5th triode, the 6th triode not conducting, and the 4th control signal inputs a positive bias, make the 4th triode ON, the first string LED, the second string LED, the 3rd string LED all work;
When 3rd cycle of electric power output voltage arrives, the 3rd control signal inputs a positive bias, the 3rd triode ON, and the first control signal and the second control signal do not input a positive bias, the first triode and the second triode not conducting; When the voltage of the 3rd cycle is lower than the first voltage, 4th control signal, the 5th control signal, the 6th control signal all input a positive bias, make the 4th triode, the 5th triode, the equal conducting of the 6th triode, the 3rd string LED work, and the first string LED and second string LED does not work; When the voltage of the 3rd cycle higher than the first voltage lower than the second voltage time, 6th control signal does not input a positive bias, 6th triode not conducting, and the 4th control signal and the 5th control signal all input a positive bias, 4th triode and the equal conducting of the 5th triode, first string LED and the 3rd string LED work, the second string LED does not work; When the voltage of the 3rd cycle is higher than the second voltage, 4th control signal and the 6th control signal all do not input a positive bias, 4th triode and the 6th triode not conducting, and the 5th control signal inputs a positive bias, make the 5th triode ON, the first string LED, the second string LED, the 3rd string LED all work.
Owing to have employed technical scheme as above, to make in whole work process the first string LED, the second string LED, the 3rd string LED operating time within three cycles all identical, solve indivedual string LED longevity of service, the phenomenon that photometric distribution is uneven.
Accompanying drawing explanation
Fig. 1 is the electric principle schematic of existing LED linear segmented power supply.
Fig. 2 is the electric principle schematic of LED linear segmented power supply of the present invention.
Embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments.
See Fig. 2, the LED linear segmented power supply provided in figure, comprise power supply DB1, L1, L2, L3 goes here and there LED, triode Q1, Q2, Q3, Q4, Q5, Q6, diode D1, D2, D3, the wherein output negativing ending grounding of power supply DB1, the output plus terminal of power supply DB1 meets triode Q1, Q2, the collector electrode of Q3, triode Q1, Q2, Q3, Q4, Q5, the base stage of Q6 meets control signal Con1, Con2, Con3, Con4, Con5, Con6, triode Q1, Q2, the emitter of Q3 meets L1 respectively, L2, the positive pole of L3 string LED also meets diode Q1 respectively, Q2, the negative pole of Q3, triode Q4, Q5, the equal ground connection of emitter of Q6, triode Q4, Q5, the collector electrode of Q6 meets L1 respectively, L2, L3 go here and there LED negative pole and meet diode Q1 respectively, Q2, the positive pole of Q3, triode Q1, Q2, Q3, Q4, Q5, Q6 are NPN type triode,
The control method of this linear circuit is as follows:
When first cycle of power supply DB1 output voltage arrives, control signal Con1 inputs a positive bias and makes triode Q1 conducting, and control signal Con2, Con3 input without positive bias, triode Q2 and Q3 not conducting; When the voltage of first cycle is lower than Ua, control signal Con4, Con5, Con6 all input a positive bias, the equal conducting of triode Q4, Q5, Q6, L1 string LED work, and L2 string LED and L3 string LED does not work; When the voltage of first cycle higher than Ua lower than Ub time, control signal Con4 does not input a positive bias, triode Q4 not conducting, and control signal Con5 and Con6 all inputs a positive bias, make triode Q5 and Q6 conducting, L1 string LED and L2 string LED work, and L3 string LED does not work; When the voltage of first cycle is higher than Ub, control signal Con4 and control signal Con5 does not input a positive bias, triode Q4 and Q5 not conducting, and control signal Con6 inputs a positive bias, make triode Q6 conducting, L1 string LED, L2 string LED, L3 string LED all works.
When second cycle of power supply DB1 output voltage arrives, control signal Con2 inputs a positive bias, make three pole Q2 conductings, and control signal Con1 and Con3 does not all input a positive bias, makes triode Q1 and Q3 not conducting; When the voltage of second cycle is lower than Ua, control signal Con4, Con5, Con6 all input a positive bias, make the equal conducting of triode Q4, Q5, Q6, L2 string LED work, and L1 string LED and L3 string LED does not work; When the voltage of second cycle higher than Ua lower than Ub time, control signal Con5 does not input a positive bias, triode Q5 not conducting, control signal Con6 and Con4 all inputs a positive bias, make triode Q6 and triode Q4 conducting, L2 string LED and L3 string LED work, and L1 string LED does not work; When the voltage of second cycle is higher than Ub, control signal Con5, Con6 all do not input a positive bias, make triode Q5, Q6 not conducting, and control signal Con4 input a positive bias, make triode Q4 conducting, L1 string LED, L2 string LED, L3 string LED all works.
When 3rd cycle of power supply DB1 output voltage arrives, control signal Con3 inputs a positive bias, triode Q3 conducting, and control signal Con1 and Con2 does not input a positive bias, triode Q1 and Q2 not conducting; When the voltage of the 3rd cycle is lower than Ua, control signal Con4, Con5, Con6 all input a positive bias, make the equal conducting of triode Q4, Q5, Q6, L3 string LED work, and L1 string LED and L2 string LED does not work; When the voltage of the 3rd cycle higher than Ua lower than Ub time, control signal Con6 does not input a positive bias, triode Q6 not conducting, and control signal Con4 and Con5 all inputs a positive bias, the equal conducting of triode Q4 and Q5, L1 string LED and L3 string LED work, L2 string LED does not work; When the voltage of the 3rd cycle is higher than Ub, control signal Con4 and Con6 does not all input a positive bias, triode Q4 and Q6 not conducting, and control signal Con5 inputs a positive bias, makes triode Q5 conducting, and L1 string LED, L2 string LED, L3 string LED all works.
Claims (1)
1.LED linear segmented formula power supply, comprises power supply, first string LED, second string LED, 3rd string LED, first triode, second triode, 3rd triode, is characterized in that, also comprises the 4th triode, 5th triode, 6th triode and the first diode, second diode, 3rd diode, wherein the output negativing ending grounding of power supply, the output plus terminal of power supply connects the first triode, the collector electrode of the second triode and the 3rd triode, the first triode, second triode, 3rd triode, 4th triode, 5th triode, the base stage of the 6th triode connects the first control signal respectively, second control signal, 3rd control signal, 4th control signal, 5th control signal and the 6th control signal, the emitter of the first triode connects the positive pole of the first string LED and the negative pole of the 3rd diode, the emitter of the second triode connects the positive pole of the second string LED and the negative pole of the first diode, the emitter of the 3rd triode connects the 3rd string positive pole of LED and the negative pole of the second diode, the 4th triode, 5th triode, the equal ground connection of emitter of the 6th triode, the collector electrode of the 4th triode connects the 3rd string negative pole of LED and the positive pole of the 3rd diode, the collector electrode of the 5th triode connects the first string negative pole of LED and positive pole of the first diode, and the collector electrode of the 6th triode connects the second string negative pole of LED and positive pole of the second diode, first triode, the second triode, the 3rd triode, the 4th triode, the 5th triode, the 6th triode are NPN type triode,
The control method of this linear circuit is as follows:
When first cycle of electric power output voltage arrives, the first control signal inputs a positive bias and makes the first triode ON, and the second control signal and the 3rd control signal input without positive bias, the second triode and the 3rd triode not conducting; When the voltage of first cycle is lower than the first voltage, 4th control signal, the 5th control signal and the 6th control signal all input a positive bias, 4th triode, the 5th triode, the equal conducting of the 6th triode, the first string LED work, and the second string LED and the 3rd string LED does not work; When the voltage of first cycle higher than the first voltage lower than the second voltage time, 4th control signal does not input a positive bias, 4th triode not conducting, and the 5th control signal and the 6th control signal all input a positive bias, make the 5th triode and the 6th triode ON, first string LED and second string LED work, and the 3rd string LED does not work; When the voltage of first cycle is higher than the second voltage, 4th control signal and the 5th control signal do not input a positive bias, 4th triode and the 5th triode not conducting, and the 6th control signal inputs a positive bias, make the 6th triode ON, the first string LED, the second string LED, the 3rd string LED all work;
When second cycle of electric power output voltage arrives, the second control signal inputs a positive bias, make the second triode ON, and the first control signal and the 3rd control signal does not all input a positive bias, makes the first triode and the 3rd triode not conducting; When the voltage of second cycle is lower than the first voltage, 4th control signal, the 5th control signal, the 6th control signal all input a positive bias, make the 4th triode, the 5th triode and the equal conducting of the 6th triode, the second string LED work, and the first string LED and the 3rd string LED does not work; When the voltage of second cycle higher than the first voltage lower than the second voltage time, 5th control signal does not input a positive bias, 5th triode not conducting, 6th control signal and the 4th control signal all input a positive bias, make the 6th triode and the 4th triode ON, second string LED and the 3rd string LED work, and the first string LED does not work; When the voltage of second cycle is higher than the second voltage, 5th control signal and the 6th control signal all do not input a positive bias, make the 5th triode, the 6th triode not conducting, and the 4th control signal inputs a positive bias, make the 4th triode ON, the first string LED, the second string LED, the 3rd string LED all work;
When 3rd cycle of electric power output voltage arrives, the 3rd control signal inputs a positive bias, the 3rd triode ON, and the first control signal and the second control signal do not input a positive bias, the first triode and the second triode not conducting; When the voltage of the 3rd cycle is lower than the first voltage, 4th control signal, the 5th control signal, the 6th control signal all input a positive bias, make the 4th triode, the 5th triode, the equal conducting of the 6th triode, the 3rd string LED work, and the first string LED and second string LED does not work; When the voltage of the 3rd cycle higher than the first voltage lower than the second voltage time, 6th control signal does not input a positive bias, 6th triode not conducting, and the 4th control signal and the 5th control signal all input a positive bias, 4th triode and the equal conducting of the 5th triode, first string LED and the 3rd string LED work, the second string LED does not work; When the voltage of the 3rd cycle is higher than the second voltage, 4th control signal and the 6th control signal all do not input a positive bias, 4th triode and the 6th triode not conducting, and the 5th control signal inputs a positive bias, make the 5th triode ON, the first string LED, the second string LED, the 3rd string LED all work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563845.2A CN103068113B (en) | 2012-12-21 | 2012-12-21 | Light emitting diode (LED) linear sectional type power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210563845.2A CN103068113B (en) | 2012-12-21 | 2012-12-21 | Light emitting diode (LED) linear sectional type power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103068113A CN103068113A (en) | 2013-04-24 |
| CN103068113B true CN103068113B (en) | 2015-02-04 |
Family
ID=48110514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210563845.2A Active CN103068113B (en) | 2012-12-21 | 2012-12-21 | Light emitting diode (LED) linear sectional type power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103068113B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103796382A (en) * | 2014-01-16 | 2014-05-14 | 郭万里 | Drive power circuit capable of being adapted to different numbers of series connection LEDs |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081722B1 (en) * | 2005-02-04 | 2006-07-25 | Kimlong Huynh | Light emitting diode multiphase driver circuit and method |
| CN101668373A (en) * | 2009-09-29 | 2010-03-10 | 李云霄 | LED light source driving circuit supplied by AC power |
| CN101827481A (en) * | 2009-09-29 | 2010-09-08 | 李云霄 | Alternating-current power supply LED light source drive circuit with segmented conversion input |
-
2012
- 2012-12-21 CN CN201210563845.2A patent/CN103068113B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7081722B1 (en) * | 2005-02-04 | 2006-07-25 | Kimlong Huynh | Light emitting diode multiphase driver circuit and method |
| CN101668373A (en) * | 2009-09-29 | 2010-03-10 | 李云霄 | LED light source driving circuit supplied by AC power |
| CN101827481A (en) * | 2009-09-29 | 2010-09-08 | 李云霄 | Alternating-current power supply LED light source drive circuit with segmented conversion input |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103068113A (en) | 2013-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103503572B (en) | Constant current driver circuit for LED | |
| CN203858468U (en) | Air conditioner standby power consumption control circuit and air conditioner | |
| CN202488808U (en) | Novel LED constant-current driving circuit | |
| CN103068113B (en) | Light emitting diode (LED) linear sectional type power supply | |
| CN202996717U (en) | Relay drive circuit in resistance-capacitance voltage drop-down circuit | |
| CN203378104U (en) | Light modulation circuit | |
| CN203151801U (en) | Led point light source circuit | |
| CN203645893U (en) | Multi LED display circuit based on single chip microcomputer less port control | |
| CN202758591U (en) | Backlight LED driving output circuit and television set | |
| CN202634852U (en) | Linear constant-current LED (light-emitting diode) driver | |
| CN202026511U (en) | LED constant current constant voltage electricity obtaining system | |
| CN204290883U (en) | A kind of terminal amplifier circuit | |
| CN204119573U (en) | 5w led drive circuit | |
| CN201985840U (en) | Circuit capable of realizing isolation control for multiple terminals by single signal | |
| CN203882887U (en) | Energy-saving single-coil magnetic latching relay device with differential driving circuit | |
| CN203423796U (en) | Microphone amplifier with micro power consumption and high sensitivity | |
| CN202634853U (en) | Power-saving light emitting diode driver | |
| CN206807828U (en) | A kind of conversion equipment | |
| CN203880462U (en) | Sectional type integrated light source | |
| CN202679758U (en) | Light emitting diode light-emission brightness controller | |
| CN202918554U (en) | High power ceiling lamp circuit device | |
| CN202873147U (en) | Driving power supply of constant-light LED street lamp | |
| CN203882886U (en) | Energy-saving double-coil magnetic latching relay device with differential driving circuit | |
| CN204334314U (en) | A kind of alternating expression APFC circuit | |
| CN202918555U (en) | Low cost high power ceiling lamp circuit device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240409 Address after: No. 15, Shaling Industrial West Road, Xiakou, Dongcheng Street, Dongguan City, Guangdong Province, 523000 Patentee after: DONGGUAN ANDU ELECTRONICS Co.,Ltd. Country or region after: China Address before: 200436 No. 330 West Road, Zhabei District, Shanghai Patentee before: Shanghai Xinfeng Electronic Co.,Ltd. Country or region before: China |