CN102869145A - LED (light emitting diode) driving power supply - Google Patents
LED (light emitting diode) driving power supply Download PDFInfo
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- CN102869145A CN102869145A CN2011101913526A CN201110191352A CN102869145A CN 102869145 A CN102869145 A CN 102869145A CN 2011101913526 A CN2011101913526 A CN 2011101913526A CN 201110191352 A CN201110191352 A CN 201110191352A CN 102869145 A CN102869145 A CN 102869145A
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Abstract
The invention discloses an LED (light emitting diode) driving power supply, comprising a mains supply alternating current power source, a first resistor R1, a second resistor R2, a first capacitor C1, an electric reactor T1, a second capacitor C2, a rectifier bridge DZ, a third capacitor C3, a third resistor R3, a fifth resistor R5, a transformer T2, a fourth resistor R4, a fourth capacitor C4, a power source driving integrated circuit, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, an eighth capacitor C8, a tenth resistor R10, a triode, a seventh resistor R7, a first diode D1, a sixth resistor R6, a sixth capacitor C6, a first diode D1, a second diode D2, an eighth resistor R8 and a seventh capacitor C7. By adopting the technical scheme provided by the invention, output current can be accurately set, the power source power factor is very high, and the service life of the LED driving power supply is equivalent to the service life of an LED.
Description
Technical field
The present invention relates to power technique fields, relate in particular to a kind of LED driving power.
Background technology
The LED that uses at present is the device of current mode, in order to allow LED be operated in constant power rating, must use the power supply of constant current to drive.The power factor of the drive circuit of the conventional pressure/capacitance type Switching Power Supply of using at present only has about 0.5, the ratio of such circuit reactive power is higher, do not reach the purpose of energy saving, and be not complementary the useful life of the constant-current supply of the High Power Factor that has with LED, thereby can't use.
Summary of the invention
The object of the invention is to propose a kind of LED driving power, can accurately set output current, have very high electrical source power factor, and the life-span is suitable with the LED life-span.
For reaching this purpose, the present invention by the following technical solutions:
A kind of LED driving power, comprise the mains ac power supply, the first resistance R 1, the second resistance R 2, the first capacitor C 1, reactor T1, the second capacitor C 2, rectifier bridge DZ, the 3rd capacitor C 3, the 3rd resistance R 3, the 5th resistance R 5, transformer T2, the 4th resistance R 4, the 4th capacitor C 4, the power drives integrated circuit, the 8th resistance R 8, the 9th resistance R 9, the 5th capacitor C 5, the 8th capacitor C 8, the tenth resistance R 10, triode, the 7th resistance R 7, the first diode D1, the 6th resistance R 6, the 6th capacitor C 6, the first diode D1, the second diode D2, the 8th resistance R 8 and the 7th capacitor C 7, wherein
Mains ac power supply one end AC1 is connected with the first resistance R 1 one ends, one end of the other end of the first resistance R 1 and the second resistance R 2, one end of the first capacitor C 1 is connected an end and is connected with reactor T1, mains ac power supply other end AC2 and the second resistance R 2 other ends, the other end of the first capacitor C 1 is connected two ends and is connected with reactor T1, three ends of reactor T1 and an end of the second capacitor C 2 are connected an input and are connected with rectifier bridge DZ, four ends of reactor T1 and the other end of the second capacitor C 2 are connected another input and are connected with rectifier bridge DZ, the output head grounding of rectifier bridge DZ, one end of another output of rectifier bridge DZ and the 3rd capacitor C 3, one end of the 3rd resistance R 3, one end of the 5th resistance R 5 is connected three ends and is connected with transformer T2, the other end ground connection of the 3rd capacitor C 3, one end of the 3rd resistance R 3 other ends and the 4th resistance R 4, one end of the 4th capacitor C 4 is connected 3 pin and is connected with the power drives integrated circuit, the other end ground connection of the 4th capacitor C 4, the other end ground connection of the 4th resistance R 4,6 pin ground connection of power drives integrated circuit, 1 pin of power drives integrated circuit is connected with an end of the 8th resistance R 8 and an end of the 9th resistance R 9, the 9th resistance R 9 other end ground connection, 2 pin of power drives integrated circuit are connected with an end of the 5th capacitor C 5, the other end of the 5th capacitor C 5 is connected with 1 pin of power drives integrated circuit, one end of 4 pin of power drives integrated circuit and the 8th capacitor C 8, one end of the tenth resistance R 10 is connected emitter and is connected with triode, the other end ground connection of the 8th capacitor C 8, the other end ground connection of the tenth resistance R 10,7 pin of power drives integrated circuit are connected with the base stage of triode, 5 pin of power drives integrated circuit are connected with an end of the 7th resistance R 7, the other end of the 7th resistance R 7 and the end of the first diode D1 are connected an end and are connected with transformer T2, the two end ground connection of transformer T2, one end of 8 pin of power drives integrated circuit and the 6th resistance R 6, one end of the 6th capacitor C 6 be connected the other end of diode D1 and connect, the other end ground connection of the 6th capacitor C 6, the other end of the 6th resistance R 6 is connected with the other end of the 5th resistance R 5, four ends of transformer T2 and the end of the second diode D2 are connected collector electrode and are connected with triode, the other end of the second diode D2 is connected the other end ground connection of the 7th capacitor C 7 with the other end of the 8th resistance R 8 and an end of the 7th capacitor C 7.
The model of power drives integrated circuit is L6562.
Perhaps the model of power drives integrated circuit is PT4107.
The model of triode is SMK0760.
Adopted technical scheme of the present invention, LED driving power power factor is higher than 0.96, and circuit is reliable, and its life-span can be suitable with the LED tube lifetime; Output current can be set exactly, and output current can be divided into the class such as 20mA, 300mA and 700mA, and outputting current steadily is not subjected to the impact of external commercial power network fluctuation, is applicable to different led display units, LED display and LED illuminating lamp etc.
Description of drawings
Fig. 1 is the circuit diagram of LED driving power in the specific embodiment of the invention.
Embodiment
Further specify technical scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
The main thought of technical solution of the present invention is that employing power drives integrated circuit L6562 is the circuit that main chip connects, and comprises the circuit of power factor correction that power drives integrated circuit L6562, triode SMK0760, diode, resistance are connected with electric capacity.
Fig. 1 is the circuit diagram of LED driving power in the specific embodiment of the invention.As shown in Figure 1, this LED driving power comprises the mains ac power supply, the first resistance R 1, the second resistance R 2, the first capacitor C 1, reactor T1, the second capacitor C 2, rectifier bridge DZ, the 3rd capacitor C 3, the 3rd resistance R 3, the 5th resistance R 5, transformer T2, the 4th resistance R 4, the 4th capacitor C 4, the power drives integrated circuit, the 8th resistance R 8, the 9th resistance R 9, the 5th capacitor C 5, the 8th capacitor C 8, the tenth resistance R 10, triode, the 7th resistance R 7, the first diode D1, the 6th resistance R 6, the 6th capacitor C 6, the first diode D1, the second diode D2, the 8th resistance R 8 and the 7th capacitor C 7.Wherein, the model of power drives integrated circuit is L6562 or PT4107, and the model of triode is SMK0760.
Mains ac power supply one end AC1 is connected with the first resistance R 1 one ends, one end of the other end of the first resistance R 1 and the second resistance R 2, one end of the first capacitor C 1 is connected an end and is connected with reactor T1, mains ac power supply other end AC2 and the second resistance R 2 other ends, the other end of the first capacitor C 1 is connected two ends and is connected with reactor T1, three ends of reactor T1 and an end of the second capacitor C 2 are connected an input and are connected with rectifier bridge DZ, four ends of reactor T1 and the other end of the second capacitor C 2 are connected another input and are connected with rectifier bridge DZ, the output head grounding of rectifier bridge DZ, one end of another output of rectifier bridge DZ and the 3rd capacitor C 3, one end of the 3rd resistance R 3, one end of the 5th resistance R 5 is connected three ends and is connected with transformer T2, the other end ground connection of the 3rd capacitor C 3, one end of the 3rd resistance R 3 other ends and the 4th resistance R 4, one end of the 4th capacitor C 4 is connected 3 pin and is connected with the power drives integrated circuit, the other end ground connection of the 4th capacitor C 4, the other end ground connection of the 4th resistance R 4,6 pin ground connection of power drives integrated circuit, 1 pin of power drives integrated circuit is connected with an end of the 8th resistance R 8 and an end of the 9th resistance R 9, the 9th resistance R 9 other end ground connection, 2 pin of power drives integrated circuit are connected with an end of the 5th capacitor C 5, the other end of the 5th capacitor C 5 is connected with 1 pin of power drives integrated circuit, one end of 4 pin of power drives integrated circuit and the 8th capacitor C 8, one end of the tenth resistance R 10 is connected emitter and is connected with triode, the other end ground connection of the 8th capacitor C 8, the other end ground connection of the tenth resistance R 10,7 pin of power drives integrated circuit are connected with the base stage of triode, 5 pin of power drives integrated circuit are connected with an end of the 7th resistance R 7, the other end of the 7th resistance R 7 and the end of the first diode D1 are connected an end and are connected with transformer T2, the two end ground connection of transformer T2, one end of 8 pin of power drives integrated circuit and the 6th resistance R 6, one end of the 6th capacitor C 6 be connected the other end of diode D1 and connect, the other end ground connection of the 6th capacitor C 6, the other end of the 6th resistance R 6 is connected with the other end of the 5th resistance R 5, four ends of transformer T2 and the end of the second diode D2 are connected collector electrode and are connected with triode, the other end of the second diode D2 is connected the other end ground connection of the 7th capacitor C 7 with the other end of the 8th resistance R 8 and an end of the 7th capacitor C 7.
In addition, the components and parts of apolegamy highly redundant parameter, science arranges the operating state of circuit, has high reliability and the long-life technical indicator that is complementary with LED to guarantee power supply.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (4)
1. LED driving power, it is characterized in that, comprise the mains ac power supply, the first resistance R 1, the second resistance R 2, the first capacitor C 1, reactor T1, the second capacitor C 2, rectifier bridge DZ, the 3rd capacitor C 3, the 3rd resistance R 3, the 5th resistance R 5, transformer T2, the 4th resistance R 4, the 4th capacitor C 4, the power drives integrated circuit, the 8th resistance R 8, the 9th resistance R 9, the 5th capacitor C 5, the 8th capacitor C 8, the tenth resistance R 10, triode, the 7th resistance R 7, the first diode D1, the 6th resistance R 6, the 6th capacitor C 6, the first diode D1, the second diode D2, the 8th resistance R 8 and the 7th capacitor C 7, wherein
Mains ac power supply one end AC1 is connected with the first resistance R 1 one ends, one end of the other end of the first resistance R 1 and the second resistance R 2, one end of the first capacitor C 1 is connected an end and is connected with reactor T1, mains ac power supply other end AC2 and the second resistance R 2 other ends, the other end of the first capacitor C 1 is connected two ends and is connected with reactor T1, three ends of reactor T1 and an end of the second capacitor C 2 are connected an input and are connected with rectifier bridge DZ, four ends of reactor T1 and the other end of the second capacitor C 2 are connected another input and are connected with rectifier bridge DZ, the output head grounding of rectifier bridge DZ, one end of another output of rectifier bridge DZ and the 3rd capacitor C 3, one end of the 3rd resistance R 3, one end of the 5th resistance R 5 is connected three ends and is connected with transformer T2, the other end ground connection of the 3rd capacitor C 3, one end of the 3rd resistance R 3 other ends and the 4th resistance R 4, one end of the 4th capacitor C 4 is connected 3 pin and is connected with the power drives integrated circuit, the other end ground connection of the 4th capacitor C 4, the other end ground connection of the 4th resistance R 4,6 pin ground connection of power drives integrated circuit, 1 pin of power drives integrated circuit is connected with an end of the 8th resistance R 8 and an end of the 9th resistance R 9, the 9th resistance R 9 other end ground connection, 2 pin of power drives integrated circuit are connected with an end of the 5th capacitor C 5, the other end of the 5th capacitor C 5 is connected with 1 pin of power drives integrated circuit, one end of 4 pin of power drives integrated circuit and the 8th capacitor C 8, one end of the tenth resistance R 10 is connected emitter and is connected with triode, the other end ground connection of the 8th capacitor C 8, the other end ground connection of the tenth resistance R 10,7 pin of power drives integrated circuit are connected with the base stage of triode, 5 pin of power drives integrated circuit are connected with an end of the 7th resistance R 7, the other end of the 7th resistance R 7 and the end of the first diode D1 are connected an end and are connected with transformer T2, the two end ground connection of transformer T2, one end of 8 pin of power drives integrated circuit and the 6th resistance R 6, one end of the 6th capacitor C 6 be connected the other end of diode D1 and connect, the other end ground connection of the 6th capacitor C 6, the other end of the 6th resistance R 6 is connected with the other end of the 5th resistance R 5, four ends of transformer T2 and the end of the second diode D2 are connected collector electrode and are connected with triode, the other end of the second diode D2 is connected the other end ground connection of the 7th capacitor C 7 with the other end of the 8th resistance R 8 and an end of the 7th capacitor C 7.
2. a kind of LED driving power according to claim 1 is characterized in that the model of power drives integrated circuit is L6562.
3. a kind of LED driving power according to claim 1 is characterized in that the model of power drives integrated circuit is PT4107.
4. a kind of LED driving power according to claim 1 is characterized in that the model of triode is SMK0760.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101913526A CN102869145A (en) | 2011-07-09 | 2011-07-09 | LED (light emitting diode) driving power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101913526A CN102869145A (en) | 2011-07-09 | 2011-07-09 | LED (light emitting diode) driving power supply |
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| CN102869145A true CN102869145A (en) | 2013-01-09 |
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| CN2011101913526A Pending CN102869145A (en) | 2011-07-09 | 2011-07-09 | LED (light emitting diode) driving power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054545Y (en) * | 2007-06-01 | 2008-04-30 | 佛山市顺德区瑞德电子实业有限公司 | Middle power multi-channel output thin switch power supply |
| CN101523995A (en) * | 2006-11-22 | 2009-09-02 | 奥斯兰姆有限公司 | Circuit arrangement and method for operating a discharge lamp with preheatable electrodes |
| CN101616524A (en) * | 2009-07-29 | 2009-12-30 | 广州复旦奥特科技股份有限公司 | A kind of commercial LED illumination driver |
| CN201667747U (en) * | 2010-01-29 | 2010-12-08 | 株洲耀祥光电科技有限公司 | High-efficiency LED street lamp drive circuit |
| CN102045928A (en) * | 2010-12-18 | 2011-05-04 | 惠州大景照明控制有限公司 | LED (light-emitting diode) lamp power supply capable of dimming |
-
2011
- 2011-07-09 CN CN2011101913526A patent/CN102869145A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101523995A (en) * | 2006-11-22 | 2009-09-02 | 奥斯兰姆有限公司 | Circuit arrangement and method for operating a discharge lamp with preheatable electrodes |
| CN201054545Y (en) * | 2007-06-01 | 2008-04-30 | 佛山市顺德区瑞德电子实业有限公司 | Middle power multi-channel output thin switch power supply |
| CN101616524A (en) * | 2009-07-29 | 2009-12-30 | 广州复旦奥特科技股份有限公司 | A kind of commercial LED illumination driver |
| CN201667747U (en) * | 2010-01-29 | 2010-12-08 | 株洲耀祥光电科技有限公司 | High-efficiency LED street lamp drive circuit |
| CN102045928A (en) * | 2010-12-18 | 2011-05-04 | 惠州大景照明控制有限公司 | LED (light-emitting diode) lamp power supply capable of dimming |
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Application publication date: 20130109 |