CN106061045B - LED linear driving system - Google Patents
LED linear driving system Download PDFInfo
- Publication number
- CN106061045B CN106061045B CN201610651882.7A CN201610651882A CN106061045B CN 106061045 B CN106061045 B CN 106061045B CN 201610651882 A CN201610651882 A CN 201610651882A CN 106061045 B CN106061045 B CN 106061045B
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- resistor
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- rectifier bridge
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- 230000002457 bidirectional effect Effects 0.000 claims abstract description 6
- 239000003990 capacitor Substances 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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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- 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 invention discloses an LED linear driving system which comprises a chip U1, a bidirectional thyristor Q2, a rectifier bridge BD1 and a resistor R9, wherein one voltage input end of the rectifier bridge BD1 is connected with resistor VD1 and 220V alternating current, the other voltage input end of the rectifier bridge BD1 is connected with the other end of the resistor VD1 and the other end of the 220V alternating current, and the voltage output end of the rectifier bridge BD1 is connected with the resistor R1, the resistor R2 and the anode of a diode D1. The LED linear driving system adopts a linear driving circuit, and under the condition that the input voltage is higher than the standard input voltage, such as standard AC220V-50W, and AC210V-240V, the output power is basically constant at about 50W and the average current harmonic wave is lower than 5 percent by adjusting the load current.
Description
Technical Field
The invention relates to an LED linear driving low-current harmonic wave and constant power comprehensive technology, in particular to an LED linear driving system.
Background
The LED linear drive low current harmonic wave and constant power synthesis technology (namely, a linear drive circuit is adopted, when the input voltage is higher than the standard input voltage, such as standard AC220V-50W, and when the input voltage is AC210V-240V, the output power is ensured to be basically constant at about 50W and the average current harmonic wave is lower than 5 percent by adjusting the load current.
The invention is characterized in that the requirements on power stability and average current harmonic wave in the current linear driving industry are met, and the requirements on national authentication are met.
Disclosure of Invention
The present invention is directed to an LED linear driving system, which solves the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a LED linear drive system, including chip U1, bidirectional thyristor Q2, rectifier bridge BD1 and resistance R9, the other voltage input end connection resistance VD1 of rectifier bridge BD1 and 220V alternating current, the other voltage input end connection resistance VD 1's the other end and 220V alternating current of rectifier bridge BD1, resistance R1 is connected to rectifier bridge BD 1's voltage output end, resistance R2 and diode D1's positive pole, resistance R1's the other end connection resistance R3, resistance R4 is connected to resistance R2's the other end, resistance R4's the other end connection electric capacity C3, resistance R5, the negative pole of diode D4 and the pin 3 of chip U1, MOS transistor Q1's source electrode is connected to resistance R5's the other end, the other end connection resistance C3's the earth terminal of rectifier bridge BD1, MOS transistor Q1's the drain electrode, electric capacity C4, resistance R8, a main electrode of bidirectional thyristor Q2, resistance R10, resistance R11, resistance R12 and electric capacity C2, MOS transistor Q1's the other end connection electric capacity C4, resistance R8's the other end, resistance R7 and the other end connection resistance R1's the other end, the electric capacity pin 3 of resistance R7 and the other end pin 3 of diode D1's the other end connection resistance C1 and the diode 3, the pin 3 of diode 3 and the other end pin 3 of diode 3D 1's the diode 3, the other end connection resistance 3, the terminal pin 3 of the diode 3D 1 is connected to the diode 3, the other end pin 3 is 3, the diode 3, the terminal connection of the other end of the diode 3 and 3 is connected to the electric capacity 3, and the other end of the diode Q1, the terminal is connected.
As a preferred embodiment of the present invention: the diodes D1-D4 are all light emitting diodes.
Compared with the prior art, the invention has the beneficial effects that: the LED linear driving system adopts a linear driving circuit, and under the condition that the input voltage is higher than the standard input voltage, such as standard AC220V-50W, and AC210V-240V, the output power is basically constant at about 50W and the average current harmonic wave is lower than 5 percent by adjusting the load current.
Drawings
FIG. 1 is an overall view of the present invention;
FIG. 2 is a circuit diagram of the present invention;
fig. 3 is a graph of LED power data.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-3, an LED linear driving system includes a chip U1, a triac Q2, a rectifier bridge BD1 and a resistor R9, wherein one voltage input terminal of the rectifier bridge BD1 is connected to the resistors VD1 and 220V ac, the other voltage input terminal of the rectifier bridge BD1 is connected to the other terminal of the resistor VD1 and the other terminal of 220V ac, the voltage output terminal of the rectifier bridge BD1 is connected to the resistor R1, the resistor R2 and the anode of the diode D1, the other terminal of the resistor R1 is connected to the resistor R3, the other terminal of the resistor R4 is connected to the resistor R4, the other terminal of the resistor R4 is connected to the capacitor C3, the resistor R5, the cathode of the diode D4 is connected to the pin 3 of the chip U1, the other terminal of the resistor R5 is connected to the source of the MOS diode Q1, the other terminal of the capacitor C3 is connected to the ground terminal of the rectifier bridge BD1, the drain of the MOS Q1, the capacitor C4, the resistor R8, the one main electrode of the resistor R10, the resistor R11, the resistor R12 and the resistor C2 are connected to the other terminal of the resistor C4, the other terminal of the resistor C2 is connected to the resistor C7, the other terminal of the diode D1 is connected to the other terminal of the diode Q2, and the other terminal of the diode D1 is connected to the resistor D3, and the other terminal of the resistor D3 is connected to the resistor D7 of the diode 3 is connected to the other terminal of the diode 3, and the resistor 3 is connected to the other terminal of the resistor 3 is connected to the resistor 3.
The diodes D1-D4 are all light emitting diodes.
The working principle of the invention is as follows: the circuit voltage sampling network and the voltage/current sampling network (shown in figure 1), wherein the voltage sampling network consists of R2, R4, R5 and Q1, wherein the upper end of R5 is connected to the 3 rd pin of the IC, R6 provides bias voltage for Q1 to enable the Q1 to work in a linear working area, and the input voltage of the 3 rd pin of the IC is pulse direct current voltage, so that the input voltage of the 3 rd pin of the IC is pulse direct current voltage, and the IC driving current is synchronous with the input voltage, thereby achieving the purpose of low current harmonic. In addition, the voltage/current sampling network mainly comprises R1, R3, R9, R10, R11, R12 and Q2, when the input voltage is higher, the load current is correspondingly increased, meanwhile, the voltage division network formed by R1, R3 and R9 leads to the rise of the voltage at the R9 end, C2 filters the voltage division voltage and provides direct current for the Q2 sampling pin, VCC provides bias current for Q2 through R6 and R7, when the Q2 sampling pin detects the rise of the voltage, the voltage of the output pin of Q2 is pulled down, and the output end of Q2 is connected to the Q1G pole through R7, so the voltage of the G pole is pulled down, the voltage of the 3 rd pin of the IC is pulled down, namely the IC driving current is reduced, but the current phase is not changed. Therefore, the constant power is achieved, and meanwhile, the low-current harmonic wave is ensured.
Because the 3 rd pin of the CJ3030E/F chip has an analog dimming function, (shown in the third drawing), namely, when the voltage is between 0.12V and 1.2V, the driving current can be adjusted between 10% and 100%, and by utilizing the characteristic, the constant power circuit and the low current harmonic circuit can be matched, so that the constant power and the low current harmonic function can be realized simultaneously.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. The LED linear driving system comprises a chip U1, a bidirectional thyristor Q2, a rectifier bridge BD1 and a resistor R9, and is characterized in that one voltage input end of the rectifier bridge BD1 is connected with resistors VD1 and 220V alternating current, the other voltage input end of the rectifier bridge BD1 is connected with the other end of the resistor VD1 and the other end of the 220V alternating current, the voltage output end of the rectifier bridge BD1 is connected with a resistor R1, a resistor R2 and an anode of a diode D1, the other end of the resistor R1 is connected with a resistor R3, the other end of the resistor R2 is connected with a resistor R4, the other end of the resistor R4 is connected with a capacitor C3, a resistor R5, a cathode of the diode D4 and a pin 3 of the chip U1, the other end of the resistor R5 is connected with a source electrode of a MOS tube Q1, the other end of the capacitor C3 is connected with a grounding end of the rectifier bridge BD1, a drain electrode of the MOS tube Q1, a capacitor C4, a resistor R8, a main electrode of the bidirectional thyristor Q2, a resistor R10, a resistor R11, a resistor R12 and a capacitor C2, the grid electrode of the MOS tube Q1 is connected with the other end of the capacitor C4, the other end of the resistor R8, the resistor R6 and the resistor R7, the other end of the resistor R7 is connected with the capacitor C1 and the other main electrode of the MOS tube Q2, the other end of the capacitor C1 is connected with the other end of the capacitor C2, the other end of the resistor R3, the resistor R9 and the control electrode of the bidirectional thyristor Q2, the other end of the resistor R9 is connected with the other end of the resistor R10, the other end of the resistor R11, the other end of the resistor R12, the anode of the diode D4 and the pin 1 of the chip U1, the cathode of the diode D1 is connected with the anode of the diode D2 and the pin 5 of the chip U1, the pin 6 of the chip U1 is connected with the cathode of the diode D2 and the anode of the diode D3, the cathode of the diode D5 is connected with the pin 8 of the chip U1, the type CJ3030F of the chip U1-D4 is a light emitting diode, the voltage sampling network is composed of R2, R4, R5 and Q1, wherein the upper end of R5 is connected to the 3 rd pin of the IC, R6 provides bias voltage for Q1 to enable the IC to work in a linear working area, and because the input voltage is a pulsating direct current voltage, the input voltage of the 3 rd pin of the IC is also a pulsating direct current voltage, and the IC driving current and the input voltage are synchronous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651882.7A CN106061045B (en) | 2016-08-09 | 2016-08-09 | LED linear driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651882.7A CN106061045B (en) | 2016-08-09 | 2016-08-09 | LED linear driving system |
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| Publication Number | Publication Date |
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| CN106061045A CN106061045A (en) | 2016-10-26 |
| CN106061045B true CN106061045B (en) | 2024-01-09 |
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| CN201610651882.7A Active CN106061045B (en) | 2016-08-09 | 2016-08-09 | LED linear driving system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106900109B (en) * | 2017-03-01 | 2019-04-30 | 深圳市稳先微电子有限公司 | A kind of invariable power sine LED drive circuit and LED drive device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007062556A1 (en) * | 2005-12-02 | 2007-06-07 | Junzhong Peng | Ballast device in power saving and voltage regulation |
| CN101695212A (en) * | 2009-09-28 | 2010-04-14 | 常熟卓辉光电科技有限公司 | Electronic ballast for wide-voltage high-power factor high-power energy-saving lamp |
| CN102438376A (en) * | 2011-12-20 | 2012-05-02 | 成都成电硅海科技股份有限公司 | LED (Light Emitting Diode) constant-current driving power circuit |
| CN203206143U (en) * | 2012-12-10 | 2013-09-18 | 成都芯源系统有限公司 | Step-down switching power supply |
| CN204206576U (en) * | 2014-11-28 | 2015-03-11 | 刘玲玲 | A kind of LED drive power circuit |
| CN206024164U (en) * | 2016-08-09 | 2017-03-15 | 中山市昌捷光电科技有限公司 | A kind of LED linear drive system |
-
2016
- 2016-08-09 CN CN201610651882.7A patent/CN106061045B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007062556A1 (en) * | 2005-12-02 | 2007-06-07 | Junzhong Peng | Ballast device in power saving and voltage regulation |
| CN101695212A (en) * | 2009-09-28 | 2010-04-14 | 常熟卓辉光电科技有限公司 | Electronic ballast for wide-voltage high-power factor high-power energy-saving lamp |
| CN102438376A (en) * | 2011-12-20 | 2012-05-02 | 成都成电硅海科技股份有限公司 | LED (Light Emitting Diode) constant-current driving power circuit |
| CN203206143U (en) * | 2012-12-10 | 2013-09-18 | 成都芯源系统有限公司 | Step-down switching power supply |
| CN204206576U (en) * | 2014-11-28 | 2015-03-11 | 刘玲玲 | A kind of LED drive power circuit |
| CN206024164U (en) * | 2016-08-09 | 2017-03-15 | 中山市昌捷光电科技有限公司 | A kind of LED linear drive system |
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| Publication number | Publication date |
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| CN106061045A (en) | 2016-10-26 |
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