CN107896403B - LED power supply - Google Patents
LED power supply Download PDFInfo
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- CN107896403B CN107896403B CN201711383622.7A CN201711383622A CN107896403B CN 107896403 B CN107896403 B CN 107896403B CN 201711383622 A CN201711383622 A CN 201711383622A CN 107896403 B CN107896403 B CN 107896403B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 4
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
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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 relates to an LED power supply, which is characterized in that three live wires of three-phase alternating current are changed into any live wire and zero wire through a first switch for three-phase adjustment to supply power to a power conversion circuit, so that balanced conversion between three phases of a three-phase power grid into two-phase alternating current is realized, three-phase power of a distribution box is not required to be converted into two-phase power, the cost and the installation difficulty of a user are reduced, an input DALI signal is converted into a dimming signal and a switching signal through a second chip to be output, the first chip converts the input dimming signal and the switching signal into a stable PWM signal to be output, and the PWM signal is respectively subjected to the functions of stability, no fluctuation, intelligent control of the DALI, adjustable color temperature and adjustable power through a rectification filter circuit, a color temperature adjusting circuit and a power detecting circuit.
Description
Technical Field
The invention relates to the technical field of illumination, in particular to an LED power supply.
Background
The LED lighting has the advantages of high efficiency, energy saving, safety, reliability, simple installation, strong function, environmental protection and the like, is widely popularized in all countries worldwide, is widely used for public places and household lighting, is a green healthy eye-protecting light source, has higher and higher requirements for customers at present, has more and more functional requirements, has low harmonic wave, is stable and has no fluctuation, integrates DALI intelligent control, has adjustable color temperature, has adjustable power and the like, and can not provide a multifunctional high-efficiency LED switching power supply integrating low harmonic wave, no stroboscopic effect, DALI control, adjustable color temperature and adjustable power.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the multifunctional high-efficiency LED switching power supply is stable and free of fluctuation, intelligent in DALI control, adjustable in color temperature and adjustable in power, and integrates the functions of the intelligent control, the color temperature adjustment and the power adjustment.
In order to solve the technical problems, the invention adopts the following technical scheme: an LED power supply comprises a first switch, a second switch, a third switch, a power supply conversion circuit, a first chip, a second chip, a first triode, a transformer, a rectifying and filtering circuit, a color temperature regulating circuit and a power detection circuit;
the input end of the first switch is connected with the three-phase alternating current input, the output end of the first switch is connected with the input end of the power conversion circuit, and the first switch is used for carrying out phase adjustment on the three-phase alternating current input and converting the three-phase alternating current input into two-phase alternating current output;
the output end of the power supply conversion circuit is respectively connected with the first chip and the second chip and is used for converting the two-phase alternating current input into direct current power supplies required by the first chip and the second chip;
the input end of the second chip is connected with DALI signal input, the output end of the first chip is connected with the grid electrode of a first triode, the source electrode of the first triode is connected with the input end of the power detection circuit, the drain electrode of the first triode is connected with the input end of the transformer, and the first triode is used for generating a switching current signal according to a PWM signal and transmitting the switching current signal to the power detection circuit and the transformer respectively;
the first output end and the second output end of the power detection circuit are respectively connected with the second input end of the first chip and the input end of the second switch, the output end of the second switch is connected with the third input end of the first chip, and the power detection circuit is used for converting a switch current signal into a current signal and transmitting the current signal to the first chip and controlling the switching of the second switch according to the required output power;
the output end of the transformer is connected with the input end of the rectifying and filtering circuit, the output end of the rectifying and filtering circuit is connected with the input end of the third switch, and the output end of the third switch is connected with the color temperature regulating circuit; the transformer is used for converting the switching current signal into direct-current voltage and outputting the direct-current voltage to the rectifying and filtering circuit; the rectification filter circuit is used for inhibiting ripple current of the input direct-current voltage;
the first chip is used for converting the input dimming and switching signals into stable PWM signals for output;
the output end of the second chip is connected with the first input end of the first chip and is used for converting the input DALI signal into dimming and switching signals to be output.
The invention has the beneficial effects that: three live wires of three-phase alternating current are changed into any live wire and zero wire through a first switch for three-phase adjustment to supply power to a power conversion circuit, the three-phase power of a distribution box is not required to be converted into two-phase power, balanced conversion between three phases of a power grid is realized to be two-phase alternating current, user cost and installation difficulty are reduced, an input DALI signal is converted into a dimming signal and a switching signal through a second chip to be output, the first chip converts the input dimming signal and the switching signal into a stable PWM signal to be output, and the PWM signal is respectively subjected to the functions of stability, no fluctuation, intelligent control of the DALI, adjustable color temperature and adjustable power through a rectification filter circuit, a color temperature adjusting circuit and a power detecting circuit.
Drawings
FIG. 1 is a schematic diagram of an LED power supply according to the present invention;
FIG. 2 is a circuit diagram of a power conversion circuit and a first chip of an LED power supply according to the present invention;
FIG. 3 is a circuit diagram of a first triode, transformer and rectifying and filtering circuit of an LED power supply according to the present invention;
FIG. 4 is a circuit diagram of a second chip of an LED power supply according to the present invention;
description of the reference numerals:
1. a first switch; 2. a second switch; 3. a third switch; 4. a power supply conversion circuit;
5. a first chip; 6. a second chip; 7. a first triode; 8. a transformer;
9. a rectifying and filtering circuit; 10. a color temperature adjusting circuit; 11. and a power detection circuit.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical concept of the invention is as follows: the phase adjusting switch is used for realizing the balanced conversion between the three-phase power grid phases into two-phase alternating current, the DALI signal is converted into dimming and switching signal output, the dimming and switching signal is converted into stable PWM signal output, and the PWM signal is respectively subjected to the functions of stability, no fluctuation, intelligent DALI control, color temperature adjustment and power adjustment through the rectifying and filtering circuit, the color temperature adjusting circuit and the power detecting circuit.
Referring to figures 1, 2, 3 and 4,
an LED power supply comprises a first switch 1, a second switch 2, a third switch 3, a power conversion circuit 4, a first chip 5, a second chip 6, a first triode 7, a transformer 8, a rectifying and filtering circuit 9, a color temperature regulating circuit 10 and a power detection circuit 11;
the input end of the first switch 1 is connected with a three-phase alternating current input, the output end of the first switch 1 is connected with the input end of the power conversion circuit 4, and the first switch 1 is used for carrying out phase adjustment on the three-phase alternating current input and converting the three-phase alternating current input into a two-phase alternating current output;
the output end of the power supply conversion circuit 4 is respectively connected with the first chip 5 and the second chip 6 and is used for converting two-phase alternating current input into direct current power supply required by the first chip 5 and the second chip 6;
the input end of the second chip 6 is connected with DALI signal input, the output end of the second chip 6 is connected with the first input end of the first chip 5, the output end of the first chip 5 is connected with the grid electrode of the first triode 7, the source electrode of the first triode 7 is connected with the input end of the power detection circuit 11, the drain electrode of the first triode 7 is connected with the input end of the transformer 8, the first triode 7 is used for generating a switching current signal according to PWM signals generated by the first chip 5, and the switching current signal is respectively transmitted to the power detection circuit 11 and the transformer 8;
the first output end and the second output end of the power detection circuit 11 are respectively connected with the second input end of the first chip 5 and the input end of the second switch 2, the output end of the second switch 2 is connected with the third input end of the first chip 5, and the power detection circuit 11 is used for converting a switch current signal into a current signal and transmitting the current signal to the first chip 5, and controlling the switching of the second switch 2 according to the required output power;
the output end of the transformer 8 is connected with the input end of the rectifying and filtering circuit 9, the output end of the rectifying and filtering circuit 9 is connected with the input end of the third switch 3, and the output end of the third switch 3 is connected with the color temperature regulating circuit 10; the transformer 8 is used for converting the switching current signal into direct current voltage and outputting the direct current voltage to the rectifying and filtering circuit 9; the rectifying and filtering circuit 9 is used for suppressing ripple current of the input direct-current voltage;
the first chip 5 is used for converting the input dimming and switching signals into stable PWM signals for output;
the second chip 6 is used for converting the input DALI signal into dimming and switching signal output.
From the above description, the beneficial effects of the invention are as follows: three live wires of three-phase alternating current are changed into any live wire and zero wire through a first switch for three-phase adjustment to supply power to a power conversion circuit, the three-phase power of a distribution box is not required to be converted into two-phase power, balanced conversion between three phases of a power grid is realized to be two-phase alternating current, user cost and installation difficulty are reduced, an input DALI signal is converted into a dimming signal and a switching signal through a second chip to be output, the first chip converts the input dimming signal and the switching signal into a stable PWM signal to be output, and the PWM signal is respectively subjected to the functions of stability, no fluctuation, intelligent control of the DALI, adjustable color temperature and adjustable power through a rectification filter circuit, a color temperature adjusting circuit and a power detecting circuit.
Further, the first switch is a phase change switch.
From the above description, the three live wires of the three-phase alternating current are changed into any one live wire and zero wire through the phase change switch to supply power to the power supply conversion circuit, and the three-phase power of the distribution box is not required to be converted into two-phase power, so that the balanced conversion between the phases of the three-phase power grid into two-phase alternating current is realized, and the user cost and the installation difficulty are reduced.
Further, the driving circuit for driving the first triode is further comprised, the driving circuit comprises a first resistor, a second resistor, a third resistor and a first diode, one end of the first resistor is connected with the first chip, the other end of the first resistor is connected with one end of the second resistor and the negative end of the first diode respectively, the other end of the second resistor is connected with the grid electrode of the first triode, the positive end of the first diode is connected with one end of the third resistor, the second resistor is connected with the first diode in parallel, and the other end of the third resistor is connected with the source electrode of the first triode.
As can be seen from the above description, the driving circuit is configured to drive the first transistor, so that the first transistor generates the switching current.
Further, the power detection circuit comprises a plurality of detection resistors connected in parallel.
From the above description, it can be seen that different power outputs can be achieved by multiple parallel detection resistors.
Further, the rectifying and filtering circuit comprises a second diode, a third diode, a fourth diode and a fifth diode which are sequentially connected, and further comprises a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor and a second triode, wherein one end of the first capacitor is connected with the transformer, the other end of the first capacitor is connected with the second diode, one end of the fifth diode is respectively connected with one end of the second capacitor and one end of the sixth resistor, the other end of the second capacitor is connected with the transformer, the other end of the sixth resistor is connected with the grid electrode of the second triode, one end of the sixth resistor is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with one end of the fifth resistor, and the other end of the fifth resistor is connected with the drain electrode of the second triode.
As is apparent from the above description, the rectifying and filtering circuit is used to suppress ripple current of an input dc voltage.
Further, the color temperature adjusting circuit comprises a plurality of LEDs with different colors and connected in parallel.
As can be seen from the above description, multiple LEDs of different colors and connected in parallel can realize output of different color temperatures.
Referring to fig. 1 to 4, a first embodiment of the present invention is as follows:
in the present embodiment, as graphically identified in fig. 2 to 4, an LED power supply includes a first switch SW1, a second switch SW2, a third switch SW3, a power conversion circuit 4, a first chip U1, a second chip U2, a first transistor Q2, a transformer T1, a rectifying and filtering circuit 9, a color temperature adjusting circuit 10, and a power detecting circuit 11;
the input end of the first switch SW1 is connected with the three-phase alternating current input, the output end of the first switch SW1 is connected with the input end of the power supply conversion circuit 4, the first switch SW1 is a phase conversion switch, and the first switch SW1 is used for carrying out phase adjustment on the three-phase alternating current input and converting the three-phase alternating current input into two-phase alternating current output;
the output end of the power supply conversion circuit 4 is respectively connected with the first chip U1 and the second chip U2 and is used for converting two-phase alternating current input into direct current power supplies required by the first chip U1 and the second chip U2;
the input end of the second chip U2 is connected with DALI signal input, the output end of the second chip U2 is connected with the first input end of the first chip U1, the output end of the first chip U1 is connected with the grid electrode of the first triode Q2, the source electrode of the first triode Q2 is connected with the input end of the power detection circuit 11, the drain electrode of the first triode Q2 is connected with the input end of the transformer T1, and the first triode Q2 is used for generating a switching current signal according to a PWM signal generated by the first chip U1 and transmitting the switching current signal to the power detection circuit 11 and the transformer T1 respectively;
after DALI signals are input into a protection circuit formed by R31 and ZNR5, constant current signals are generated through a constant current circuit formed by Q4 and Q5, then constant current signals are provided for an optocoupler SIC2 through D14, the constant current signals enter a second chip U2 through R12 to be processed by the optocoupler SIC2, the second chip U2 processes to generate dimming and switching signals, the dimming and switching signals are sent out by the second chip U2 and transmitted to a first chip U1, and a stable PWM signal is generated through internal operation of the first chip U1 to control a first triode Q2 to generate stable output.
The first output end and the second output end of the power detection circuit 11 are respectively connected with the second input end of the first chip U1 and the input end of the second switch SW2, the output end of the second switch SW2 is connected with the third input end of the first chip U1, and the power detection circuit 11 is used for converting a switch current signal into a current signal and transmitting the current signal to the first chip U1, and controlling the switching of the second switch SW2 according to the required output power;
the output end of the transformer T1 is connected with the input end of the rectifying and filtering circuit 9, the output end of the rectifying and filtering circuit 9 is connected with the input end of the third switch SW3, and the output end of the third switch SW3 is connected with the color temperature regulating circuit 10; the transformer T1 is used for converting a switching current signal into direct-current voltage and outputting the direct-current voltage to the rectifying and filtering circuit 9; the rectifying and filtering circuit 9 is used for suppressing ripple current of the input direct-current voltage;
the first chip U1 is used for converting the input dimming and switching signals into stable PWM signals and outputting the stable PWM signals;
the second chip U2 is used for converting an input DALI signal into a dimming signal and a switching signal to be output;
the driving circuit comprises a first resistor R25, a second resistor R26, a third resistor R27 and a first diode D22, wherein one end of the first resistor R25 is connected with a first chip U1, the other end of the first resistor R25 is respectively connected with one end of the second resistor R26 and the negative end of the first diode D22, the other end of the second resistor R26 is connected with the grid electrode of the first triode Q2, the positive end of the first diode D22 is connected with one end of the third resistor R27, the second resistor R26 is connected with the first diode D22 in parallel, and the other end of the third resistor R27 is connected with the source electrode of the first triode Q2;
the power conversion circuit 4 provides stable direct current working voltage for the first chip U1 through the starting resistor R4, the first chip U1 generates PWM signals after working, the PWM signals form a driving circuit of the first triode Q2 through the first resistor R25, the second resistor R26, the third resistor R27 and the first diode D22, the first triode Q2 starts to work to generate switching current, the switching current flows through the first path detection resistor R15 from the Q2 to obtain current signals, the current signals enter the first chip U1 through the R16, the first chip U1 generates stable PWM signals through internal operation to control the first triode Q2 to generate stable output again, if the output power needs to be increased, the current signals after the switching switch SW2 is connected with the second path detection resistor R17 to obtain the current signals after the output is increased enter the first chip U1 through the R16, the first chip U1 is controlled to generate stable output again through the internal operation, if the output power needs to be increased, the current signals can be obtained through the switching switch SW2 through the third path detection resistor R14, and the first chip U1 is controlled to generate stable output again through the first triode Q2 after the output power is increased.
The power detection circuit comprises a plurality of paths of detection resistors which are connected in parallel, and in fig. 2, three paths of detection resistors are respectively R15, R14 and R17;
the rectification filter circuit comprises a second diode D6, a third diode D7, a fourth diode D8 and a fifth diode D9 which are sequentially connected, and further comprises a fourth resistor R34, a fifth resistor R35, a sixth resistor R6, a first capacitor C5, a second capacitor C8 and a second triode Q3, wherein one end of the first capacitor C5 is connected with a transformer T1, the other end of the first capacitor C5 is connected with the second diode D6, one end of the fifth diode D9 is respectively connected with one end of the second capacitor C8 and one end of the sixth resistor R6, the other end of the second capacitor C8 is connected with the transformer T1, the other end of the sixth resistor R6 is connected with the grid electrode of the second triode Q3, one end of the sixth resistor R6 is connected with one end of the fourth resistor R34, the other end of the fourth resistor R34 is connected with one end of the fifth resistor R35, and the other end of the fifth resistor R35 is connected with the drain electrode of the second triode Q3;
the color temperature regulating circuit comprises a plurality of LEDs with different colors and connected in parallel, as shown in figure 3, the invention adopts 3 paths of LEDs, namely LEDs+, LEDY-and LEDW-.
In summary, according to the LED power supply provided by the invention, the three live wires and the zero wires of the three-phase alternating current are changed into any one live wire and zero wire through the first switch for three-phase adjustment to supply power to the power conversion circuit, the three-phase power of the distribution box is not required to be converted into two-phase power, the balanced conversion between three phases of a power grid into two-phase alternating current is realized, the cost and the installation difficulty of a user are reduced, the input DALI signal is converted into the dimming signal and the switching signal through the second chip to be output, the first chip converts the input dimming signal and the switching signal into the stable PWM signal to be output, and the PWM signal is respectively subjected to the functions of stability, no fluctuation, intelligent control of DALI, adjustable color temperature and adjustable power through the rectification filter circuit, the color temperature adjusting circuit and the power detecting circuit.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (6)
1. The LED power supply is characterized by comprising a first switch, a second switch, a third switch, a power supply conversion circuit, a first chip, a second chip, a first triode, a transformer, a rectifying and filtering circuit, a color temperature regulating circuit and a power detection circuit;
the input end of the first switch is connected with the three-phase alternating current input, the output end of the first switch is connected with the input end of the power conversion circuit, and the first switch is used for carrying out phase adjustment on the three-phase alternating current input and converting the three-phase alternating current input into two-phase alternating current output;
the output end of the power supply conversion circuit is respectively connected with the first chip and the second chip and is used for converting the two-phase alternating current input into direct current power supplies required by the first chip and the second chip;
the input end of the second chip is connected with DALI signal input, the output end of the first chip is connected with the grid electrode of a first triode, the source electrode of the first triode is connected with the input end of the power detection circuit, the drain electrode of the first triode is connected with the input end of the transformer, and the first triode is used for generating a switching current signal according to a PWM signal and transmitting the switching current signal to the power detection circuit and the transformer respectively;
the first output end and the second output end of the power detection circuit are respectively connected with the second input end of the first chip and the input end of the second switch, the output end of the second switch is connected with the third input end of the first chip, and the power detection circuit is used for converting a switch current signal into a current signal and transmitting the current signal to the first chip and controlling the switching of the second switch according to the required output power;
the output end of the transformer is connected with the input end of the rectifying and filtering circuit, the output end of the rectifying and filtering circuit is connected with the input end of the third switch, and the output end of the third switch is connected with the color temperature regulating circuit; the transformer is used for converting the switching current signal into direct-current voltage and outputting the direct-current voltage to the rectifying and filtering circuit; the rectification filter circuit is used for inhibiting ripple current of the input direct-current voltage;
the first chip is used for converting the input dimming and switching signals into stable PWM signals for output;
the output end of the second chip is connected with the first input end of the first chip and is used for converting the input DALI signal into dimming and switching signals to be output.
2. An LED power supply as claimed in claim 1, wherein the first switch is a phase change switch.
3. The LED power supply of claim 1, further comprising a driving circuit for driving the first transistor, wherein the driving circuit comprises a first resistor, a second resistor, a third resistor and a first diode, one end of the first resistor is connected to the first chip, the other end of the first resistor is connected to one end of the second resistor and the negative terminal of the first diode, the other end of the second resistor is connected to the gate of the first transistor, the positive terminal of the first diode is connected to one end of the third resistor, the second resistor is connected in parallel with the first diode, and the other end of the third resistor is connected to the source of the first transistor.
4. An LED power supply as claimed in claim 1, wherein the power detection circuit comprises a plurality of parallel detection resistors.
5. The LED power supply of claim 1, wherein the rectifying and filtering circuit comprises a second diode, a third diode, a fourth diode, and a fifth diode, which are sequentially connected, and further comprises a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, and a second triode, one end of the first capacitor is connected to the transformer, the other end of the first capacitor is connected to the second diode, one end of the fifth diode is connected to one end of the second capacitor and one end of the sixth resistor, the other end of the second capacitor is connected to the transformer, the other end of the sixth resistor is connected to the gate of the second triode, one end of the sixth resistor is connected to one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the fifth resistor, and the other end of the fifth resistor is connected to the drain of the second triode.
6. The LED power supply of claim 1, wherein the color temperature adjustment circuit comprises a plurality of differently colored LEDs connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383622.7A CN107896403B (en) | 2017-12-20 | 2017-12-20 | LED power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383622.7A CN107896403B (en) | 2017-12-20 | 2017-12-20 | LED power supply |
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| CN107896403A CN107896403A (en) | 2018-04-10 |
| CN107896403B true CN107896403B (en) | 2024-03-12 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079313A (en) * | 2012-12-28 | 2013-05-01 | 广州市雷格斯光电科技有限公司 | Multimode dimming and multipath independent constant-current driving circuit for LED (light emitting diode) illumination |
| JP2015035262A (en) * | 2013-08-07 | 2015-02-19 | パナソニックＩｐマネジメント株式会社 | Lighting device and lighting apparatus using the same |
| CN204350366U (en) * | 2014-12-11 | 2015-05-20 | 深圳市固特亮照明有限公司 | DALI dimming power source |
| CN205912291U (en) * | 2016-07-11 | 2017-01-25 | 珠海雷特科技股份有限公司 | Unify LED intelligence power that compatible multiple current of adjusting luminance set up mode more |
| WO2017107146A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市聚作照明股份有限公司 | Led drive circuit |
| CN106941740A (en) * | 2016-01-04 | 2017-07-11 | 李明 | A kind of power switch controls the method and apparatus of LED non-pole light regulating color-temperature regulatings |
| CN207706485U (en) * | 2017-12-20 | 2018-08-07 | 广东恒润光电有限公司 | A kind of LED power |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6054901B2 (en) * | 2014-03-11 | 2016-12-27 | ミネベア株式会社 | Light source driving apparatus and light source driving method |
| GB201405570D0 (en) * | 2014-03-27 | 2014-05-14 | Aurora Ltd | Improved control module |
-
2017
- 2017-12-20 CN CN201711383622.7A patent/CN107896403B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103079313A (en) * | 2012-12-28 | 2013-05-01 | 广州市雷格斯光电科技有限公司 | Multimode dimming and multipath independent constant-current driving circuit for LED (light emitting diode) illumination |
| JP2015035262A (en) * | 2013-08-07 | 2015-02-19 | パナソニックＩｐマネジメント株式会社 | Lighting device and lighting apparatus using the same |
| CN204350366U (en) * | 2014-12-11 | 2015-05-20 | 深圳市固特亮照明有限公司 | DALI dimming power source |
| WO2017107146A1 (en) * | 2015-12-24 | 2017-06-29 | 深圳市聚作照明股份有限公司 | Led drive circuit |
| CN106941740A (en) * | 2016-01-04 | 2017-07-11 | 李明 | A kind of power switch controls the method and apparatus of LED non-pole light regulating color-temperature regulatings |
| CN205912291U (en) * | 2016-07-11 | 2017-01-25 | 珠海雷特科技股份有限公司 | Unify LED intelligence power that compatible multiple current of adjusting luminance set up mode more |
| CN207706485U (en) * | 2017-12-20 | 2018-08-07 | 广东恒润光电有限公司 | A kind of LED power |
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| CN107896403A (en) | 2018-04-10 |
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