CN215300965U - LED lamp control circuit - Google Patents

Abstract

The utility model discloses a LED lamp control circuit, which comprises a first LED lamp group, a second LED lamp group, a third LED lamp group, a dimmer, a driving power supply, a first resistance dimming control module and a switch control circuit for controlling the on-off of the third LED lamp group, wherein the color temperatures of the first LED lamp group, the second LED lamp group and the third LED lamp group are different, the input end of the driving power supply is connected with the dimmer in series, the output pin of the dimming control module is electrically connected with a first resistor R1, the positive output end of the driving power supply is electrically connected with the VCC end of the third LED lamp group and the dimming control module, the negative output end of the driving power supply is electrically connected with the GND ends of the first resistor R1 and the dimming control module, the first LED lamp group and the second LED lamp group which are arranged in parallel are electrically connected between the GND end and the VCC end of the dimming control module, the second LED lamp group is composed of a second upper LED lamp group and a second lower LED lamp group which are connected in series, the utility model discloses send the light of multiple colour temperature.

Description

LED lamp control circuit

Technical Field

The utility model relates to a LED lamp technical field, concretely relates to LED lamp control circuit.

Background

Nowadays, LED lamps are widely used in various lighting applications. LEDs, also known as light emitting diodes, are solid state semiconductor devices that convert electrical energy into visible light, which can directly convert electricity into light. The heart of the LED is a semiconductor wafer, one end of the wafer is attached to a support, the other end of the wafer is a cathode, and the other end of the wafer is connected with an anode of a power supply, so that the whole wafer is packaged by epoxy resin. The LED lamp can directly emit red, yellow, blue, green, cyan, orange, violet, white light.

The color appearance of a light source, also known as the color temperature of the light source, is described by the absolute temperature of a complete radiator that is equal to or close to the color temperature of the light source. The color temperature is expressed by absolute temperature K, different color temperatures can cause different emotional reactions of people, single-color-temperature LED lamp beads are mostly adopted in common LED lamps on the market at present, and the single-color-temperature LED lamps are too monotonous, so that the emotional needs of people are difficult to meet.

In view of this, the designer of the present invention has designed the present invention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can send LED lamp control circuit of many colour temperatures light.

In order to achieve the above object, the technical solution of the present invention is:

an LED lamp control circuit comprises a first LED lamp group, a second LED lamp group, a third LED lamp group, a dimmer, a driving power supply, a first resistor R1, a dimming control module and a switch control circuit for controlling the third LED lamp group to be turned on and off, wherein the first LED lamp group, the second LED lamp group and the third LED lamp group have different color temperatures, the input end of the driving power supply is connected with the dimmer in series, the output pin of the dimming control module is electrically connected with the first resistor R1, the positive electrode output end of the driving power supply is electrically connected with the VCC end of the third LED lamp group and the dimming control module, the negative electrode output end of the driving power supply is electrically connected with the GND end of the first resistor R1 and the dimming control module, the GND end and the VCC end of the dimming control module are electrically connected with the first LED lamp group and the second LED lamp group which are arranged in parallel, and the second LED lamp group is composed of a second upper LED lamp group and a second lower LED lamp group which are connected in series, the connection point of the second upper LED lamp group and the second lower LED lamp group is electrically connected to the enabling pin of the dimming control module, and the switch control circuit is electrically connected between the negative output end of the driving power supply, the third LED lamp group and the positive output end of the driving power supply.

The switch control circuit comprises a first triode Q1, a second triode Q2, a second resistor R2 and a third resistor R3, the base of the first triode Q1 is electrically connected with the second resistor R2, the second resistor R2 is electrically connected with the output pin of the dimming control module, the emitter of the first triode Q1 is electrically connected with the emitter of the second triode Q2, the collector of the first triode Q1 is electrically connected with the base of the second triode Q2 and the third resistor R3, the collector of the second triode Q2 is electrically connected with the third LED lamp set, the positive output end of the driving power supply is electrically connected with the third resistor R3, and the negative output end of the driving power supply is electrically connected with the emitter of the second triode Q2.

Or, the switch control circuit includes a first triode Q1, a second triode Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2, and a switch SW1, the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output terminal and the negative output terminal of the driving power source, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second triode Q2, the third resistor R3 is electrically connected between the collector of the second triode Q2 and the positive output terminal of the driving power source, the collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the second resistor 686r 9 is electrically connected to the collector of the first triode Q2 and the collector of the third triode Q1, and the collector 828653 of the first triode Q8456 is electrically connected to the collector of the second triode Q8653, the first zener diode ZD1 is connected in parallel between the collector of the second triode Q2 and the emitter of the second triode Q2, and the negative output terminal of the driving power supply is electrically connected to the emitter of the second triode Q2 and the emitter of the first triode Q1.

Or, the switch control circuit includes a first triode Q1, a second triode Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2 and a switch SW1, the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output terminal and the negative output terminal of the driving power source, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second triode Q2, the third resistor R3 is electrically connected between the collector of the second triode Q2 and the positive output terminal of the driving power source, the collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the second resistor R2 is electrically connected to the collector of the first triode Q1 and thethird triode ZD2 6, the collector of the first triode Q1 is connected in parallel between the collector of the second triode Q2, the negative electrode output end of the driving power supply is electrically connected with the emitter electrode of the second triode Q2 and the emitter electrode of the first triode Q1, and the switch SW1 is electrically connected with the collector electrode of the first triode Q1 and the emitter electrode of the first triode Q1.

The chip model of dimming control module is K9282, enable the pin and be No. 5 pins of K9282, VCC holds No. 1 pin for K9282, GND end is No. 4 pins of K9282, the output pin is No. 3 pins of K9282.

The number of the LED lamps of the first LED lamp group is the same as that of the LED lamps of the second LED lamp group, and the number of the LED lamps of the third LED lamp group is less than that of the LED lamps of the first LED lamp group.

The first LED lamp set is cold white light, and the second LED lamp set is warm white light.

After the technical scheme is adopted, the utility model discloses a dimmer carries out regulation and control to drive power supply's output voltage, utilizes the first LED banks, second LED banks and the third LED banks of the different colour temperatures of control module control of adjusting luminance to go out, in order to realize letting the utility model discloses a LED lamp can send the light of multiple colour temperature and make LED send the light of different colour temperatures when adjusting LED lamp luminance.

Drawings

Fig. 1 is a schematic circuit diagram according to a first embodiment of the present invention.

Fig. 2 is a schematic diagram of a partial circuit according to a second embodiment of the present invention.

Fig. 3 is a schematic diagram of a partial circuit according to a third embodiment of the present invention.

[ notation ] to show

FirstLED Lamp set 211, second LED Lamp set 212, and thirdLED Lamp set 213

Second upper LED Lamp set 2121 and second lower LED Lamp set 2122

Dimmer 214drives power supply 215 todim control module 216.

Detailed Description

To achieve the above objects and advantages, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, the present invention discloses an LED lamp control circuit, which includes a firstLED lamp set 211, a secondLED lamp set 212, a thirdLED lamp set 213, adimmer 214, adriving power source 215, a first resistor R1, adimming control module 216, and a switch control circuit for controlling the on/off of the thirdLED lamp set 213, wherein the color temperatures of the firstLED lamp set 211, the secondLED lamp set 212, and the thirdLED lamp set 213 are different, the input terminal of thedriving power source 215 is connected in series with thedimmer 214, the output pin of thedimming control module 216 is electrically connected with the first resistor R1, the positive output terminal of thedriving power source 215 is electrically connected with the thirdLED lamp set 213 and the VCC terminal of thedimming control module 216, the negative output terminal of thedriving power source 215 is electrically connected with the first resistor R1 and the GND terminal of thedimming control module 216, the firstLED lamp set 211 and the secondLED lamp set 212, which are arranged in parallel, are electrically connected between the VCC terminal of thedimming control module 216 and the VCC terminal, the secondLED lamp set 212 is composed of a second upperLED lamp set 2121 and a second lowerLED lamp set 2122 connected in series, a connection point of the second upperLED lamp set 2121 and the second lowerLED lamp set 2122 is electrically connected to an enable pin of thedimming control module 216, and the switch control circuit is electrically connected between a negative output terminal of thedriving power supply 215, the thirdLED lamp set 213, and a positive output terminal of thedriving power supply 215.

Therefore, the utility model discloses adimmer 214 carries out regulation control to drivepower supply 215's output voltage, utilizes thefirst LED banks 211,second LED banks 212 and thethird LED banks 213's of the different colour temperatures ofdimming control module 216 control bright and go out to realize letting the utility model discloses a LED lamp makes LED send the light of different colour temperatures when can send the light of multiple colour temperature and adjust LED lamp luminance.

Furthermore, the difference between the first embodiment of the present invention and the second and third embodiments is as follows: in a first embodiment, the switch control circuit includes a first transistor Q1, a second transistor Q2, a first resistor R1, a second resistor R2 and a third resistor R3, a base of the first transistor Q1 is electrically connected to the second resistor R2, the second resistor R2 is electrically connected to an output pin of thedimming control module 216, the output pin of thedimming control module 216 is electrically connected to the first resistor R1, an emitter of the first transistor Q1 is electrically connected to an emitter of the second transistor Q2, a collector of the first transistor Q1 is electrically connected to a base of the second transistor Q2 and the third resistor R3, a collector of the second transistor Q2 is electrically connected to the thirdLED lamp set 213, an anode output of thedriving power source 215 is electrically connected to the thirdLED lamp set 213, the third resistor R3 and an emitter of thedimming control module 216, and a cathode output of thedriving power source 215 is electrically connected to a VCC emitter of the second transistor Q2, A first resistor R1 and a GND terminal of thedimming control module 216, wherein the firstLED lamp group 211 and the secondLED lamp group 212 which are arranged in parallel are electrically connected between the GND terminal and the VCC terminal of thedimming control module 216, the secondLED lamp group 212 is composed of a second upperLED lamp group 2121 and a second lowerLED lamp group 2122 which are connected in series, and a connection point of the second upperLED lamp group 2121 and the second lowerLED lamp group 2122 is electrically connected to an enable pin of thedimming control module 216; when the utility model discloses a whenLED lamp plate 21 switches on the alternating current, adjust control viadimmer 214 to the output voltage ofdrive power supply 215, utilizedimming control module 216 to control the bright and go out offirst LED banks 211, the bright and go out ofsecond LED banks 212 and the bright and go out ofthird LED banks 213, when drivepower supply 215's output voltage crescent,dimming control module 216 detects that drivepower supply 215's output voltage reaches the voltage value that sets forthird LED banks 213 and light,dimming control module 216's output pin outputs a low level, and first triode Q1 closes, and second triode Q2 opens, andthird LED banks 213 lights; when the output voltage of thedriving power supply 215 continues to increase, thedimming control module 216 detects that the output voltage of thedriving power supply 215 reaches the set voltage value for lighting the second upperLED lamp group 2121, the enable pin of thedimming control module 216 makes the second lowerLED lamp group 2122 not light, and the second upperLED lamp group 2121 lights; when the output voltage of thedriving power supply 215 then continues to increase, thedimming control module 216 detects that the output voltage of thedriving power supply 215 reaches the voltage value of the firstLED lamp group 211 being lit, the enable pin of thedimming control module 216 enables the second lowerLED lamp group 2122 to be lit, and the second upperLED lamp group 2121 to be lit, so that the firstLED lamp group 211 is lit; on the contrary, when the output voltage of thedriving power supply 215 gradually decreases, thedimming control module 216 detects that the output voltage of thedriving power supply 215 is not enough to set the voltage value for turning on the firstLED lamp group 211, the firstLED lamp group 211 is turned off, the enable pin of thedimming control module 216 turns off the second lowerLED lamp group 2122, and the second upperLED lamp group 2121 is turned on; when the output voltage of thedriving power supply 215 continues to decrease, thedimming control module 216 detects that the output voltage of thedriving power supply 215 is not enough to set the voltage value for turning on the second upperLED lamp group 2121, the firstLED lamp group 211 is turned off, and the secondLED lamp group 212 is turned off; when the output voltage of thedriving power supply 215 continues to decrease again, thedimming control module 216 detects that the output voltage of thedriving power supply 215 is not enough to set the voltage value for turning on the thirdLED lamp group 213, the output pin of thedimming control module 216 outputs a high level, the first triode Q1 is turned on, the second triode Q2 is turned off, the firstLED lamp group 211 is turned off, the secondLED lamp group 212 is turned off, and the thirdLED lamp group 213 is turned off; therefore, when theLED lamp panel 21 starts to work, the thirdLED lamp set 213 may be lighted first, then the second upper LED lamp set 2121 of the secondLED lamp set 212 is lighted, and then both the secondLED lamp set 212 and the firstLED lamp set 211 are lighted; when theLED lamp panel 21 is turned off, the firstLED lamp group 211 may be turned off first, the second upperLED lamp group 2121 of the secondLED lamp group 212 may be turned off, and then the thirdLED lamp group 213 may be turned off; in the process of adjusting the output voltage of thedriving power supply 215 by thedimmer 214, the brightness and the color temperature of the firstLED lamp set 211, the secondLED lamp set 212 and the thirdLED lamp set 213 are variable, and the light mixing effect of the secondLED lamp set 212 and the thirdLED lamp set 213 is variable; the thirdLED lamp group 213 is controlled to be turned on and off by thedimming control module 216.

In the second embodiment, the switch control circuit includes a first transistor Q1, a second transistor Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2, and a switch SW1, the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output terminal and the negative output terminal of thedriving power source 215, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second transistor Q2, the third resistor R3 is electrically connected between the collector of the second transistor Q2 and the positive output terminal of thedriving power source 215, the collector of the second transistor Q2 is electrically connected to the base of the first transistor Q1, the collector of the second resistor R2 is electrically connected to the collector of the first transistor Q2 and the positive output terminal of the third transistor Q69556, and the collector of the second transistor SW 868453 is electrically connected to the first transistor Q1, the first zener diode ZD1 is connected in parallel between the collector of the second triode Q2 and the emitter of the second triode Q2, and the negative output end of thedriving power supply 215 is electrically connected to the emitter of the second triode Q2 and the emitter of the first triode Q1; when theLED lamp panel 21 of the present invention is powered on with ac power, the output voltage of thedriving power supply 215 is adjusted and controlled by thedimmer 214, thedimming control module 216 is utilized to control the on and off of the firstLED lamp set 211, the on and off of the secondLED lamp set 212, and the on and off of the third LED lamp set 213, when the switch SW1 is in an on state, if the potential of the connection point between the fourth resistor R4 and the fifth resistor R5 is higher than the conduction voltage of the second zener diode ZD2, the second zener diode ZD2 is turned on, the second triode Q2 is turned on, the first triode Q1 is not turned on, and the thirdLED lamp set 213 is not lit; when the potential of the connection point of the fourth resistor R4 and the fifth resistor R5 is lower than the conduction voltage of the second zener diode ZD2 as the output voltage of thedriving power supply 215 is adjusted and controlled by thedimmer 214, the second zener diode ZD2 is not conducted, the second triode Q2 is not conducted, the first triode Q1 is conducted, and the thirdLED lamp group 213 is lighted; when the switch SW1 is closed, as long as theLED lamp panel 21 of the present invention is switched on with ac power, the thirdLED lamp set 213 keeps a constantly bright state regardless of whether the second triode Q2 and the first triode Q1 are turned on; thereby the utility model provides a two kinds ofthird LED banks 213 bright lamp mode supplies the customer to oneself select, lets the customer use the utility model discloses can move about different experience and feel, promote the utility model discloses an use flexibility.

In the third embodiment, the switch control circuit includes a first triode Q1, a second triode Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2, and a switch SW1, the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output terminal and the negative output terminal of thedriving power source 215, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second triode Q2, the third resistor R3 is electrically connected between the collector of the second triode Q2 and the positive output terminal of thedriving power source 215, the collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the second resistor R2 is electrically connected to the collector of the first triode Q2 and the collector of the third triode Q1 13, and the collector of the second triode Q8653 is electrically connected in parallel to the collector of the second triode Q828653 Between the poles, the negative output terminal of thedriving power supply 215 is electrically connected to the emitter of the second transistor Q2 and the emitter of the first transistor Q1, and the switch SW1 is electrically connected to the collector of the first transistor Q1 and the emitter of the first transistor Q1; when theLED lamp panel 21 of the present invention is powered on with ac power, the output voltage of thedriving power supply 215 is adjusted and controlled by thedimmer 214, thedimming control module 216 is utilized to control the on and off of the firstLED lamp set 211, the on and off of the second LED lamp set 212, and the on and off of the thirdLED lamp set 213, when the switch SW1 is in an on state, if the potential of the connection point between the fourth resistor R4 and the fifth resistor R5 is higher than the conduction voltage of the second zener diode ZD2, the second zener diode ZD2 is turned on, the second triode Q2 is turned on, the first triode Q1 is not turned on, and the thirdLED lamp set 213 is not lit; when the potential of the connection point of the fourth resistor R4 and the fifth resistor R5 is lower than the conduction voltage of the second zener diode ZD2 as the output voltage of thedriving power supply 215 is adjusted and controlled by thedimmer 214, the second zener diode ZD2 is not conducted, the second triode Q2 is not conducted, the first triode Q1 is conducted, and the thirdLED lamp group 213 is lighted; when the switch SW1 is closed, as long as theLED lamp panel 21 of the present invention is switched on with ac power, the thirdLED lamp set 213 keeps a constantly bright state regardless of whether the second triode Q2 and the first triode Q1 are turned on; thereby the utility model provides a two kinds ofthird LED banks 213 bright lamp mode supplies the customer to oneself select, lets the customer use the utility model discloses can move about different experience and feel, promote the utility model discloses an use flexibility.

In the second and third embodiments, the first zener diode ZD1 can perform an overvoltage clamping protection function.

The chip model of thedimming control module 216 is K9282, the enable pin is No. 5 pin of K9282, the VCC terminal is No. 1 pin of K9282, the GND terminal is No. 4 pin of K9282, and the output pin is No. 3 pin of K9282; the first triode Q1 and the second triode Q2 are both NPN type devices, the model is 8050, the resistance of the first resistor R1 may be 36K Ω, the resistance of the second resistor R2 may be 22K Ω, the resistance of the third resistor R3 may be 120K Ω, the voltage of the firstLED lamp set 211 may be 36V, thepin 5 of the K9282 may be 9V, and the maximum voltage of the thirdLED lamp set 213 may be 24V.

Moreover, the number of the LED lamps in the firstLED lamp group 211 is the same as that in the secondLED lamp group 212, and the number of the LED lamps in the thirdLED lamp group 213 is less than that in the firstLED lamp group 211; the firstLED lamp set 211 can be a cool white light, and the secondLED lamp set 212 can be a warm white light, so that the light emitted from the firstLED lamp set 211 and the secondLED lamp set 212 are mixed to adjust the color temperature and the brightness.

The technical content and technical features of the present invention have been disclosed as above, and the present invention is not limited to the above-mentioned components, and those skilled in the art may make various replacements and modifications based on the disclosure of the present invention without departing from the spirit of the present invention. Therefore, the protection scope of the present invention should not be limited to the embodiments disclosed, but should include various alternatives and modifications without departing from the invention, and be covered by the claims.

Claims (7)

1. An LED lamp control circuit, comprising: the LED lamp comprises a first LED lamp group, a second LED lamp group, a third LED lamp group, a dimmer, a driving power supply, a first resistor R1, a dimming control module and a switch control circuit for controlling the third LED lamp group to be turned on and off, wherein the first LED lamp group, the second LED lamp group and the third LED lamp group are different in color temperature, the input end of the driving power supply is connected with the dimmer in series, the output pin of the dimming control module is electrically connected with the first resistor R1, the positive electrode output end of the driving power supply is electrically connected with the VCC end of the third LED lamp group and the dimming control module, the negative electrode output end of the driving power supply is electrically connected with the first resistor R1 and the GND end of the dimming control module, the GND end and the VCC end of the dimming control module are electrically connected with the first LED lamp group and the second LED lamp group in parallel arrangement, the second LED lamp group is composed of a second upper LED lamp group and a second lower LED lamp group which are connected in series, and the connection point of the second upper LED lamp group and the second LED lamp group is electrically connected to the GND module so that the dimming module can be turned on And the switch control circuit is electrically connected among the negative output end of the driving power supply, the third LED lamp group and the positive output end of the driving power supply.

2. An LED lamp control circuit according to claim 1, wherein: the switch control circuit comprises a first triode Q1, a second triode Q2, a second resistor R2 and a third resistor R3, the base of the first triode Q1 is electrically connected with the second resistor R2, the second resistor R2 is electrically connected with the output pin of the dimming control module, the emitter of the first triode Q1 is electrically connected with the emitter of the second triode Q2, the collector of the first triode Q1 is electrically connected with the base of the second triode Q2 and the third resistor R3, the collector of the second triode Q2 is electrically connected with the third LED lamp set, the positive output end of the driving power supply is electrically connected with the third resistor R3, and the negative output end of the driving power supply is electrically connected with the emitter of the second triode Q2.

3. An LED lamp control circuit according to claim 1, wherein: the switch control circuit comprises a first triode Q1, a second triode Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2 and a switch SW1, wherein the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output end and the negative output end of the driving power supply, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second triode Q2, the third resistor R3 is electrically connected between the collector of the second triode Q2 and the positive output end of the driving power supply, the collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the second resistor R2 is electrically connected to the collector of the first triode Q1 and the third LED group, and the collector of the switch SW 828653 is electrically connected to the collector of the second triode Q1, the first zener diode ZD1 is connected in parallel between the collector of the second triode Q2 and the emitter of the second triode Q2, and the negative output terminal of the driving power supply is electrically connected to the emitter of the second triode Q2 and the emitter of the first triode Q1.

4. An LED lamp control circuit according to claim 1, wherein: the switch control circuit comprises a first triode Q1, a second triode Q2, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first zener diode ZD1, a second zener diode ZD2 and a switch SW1, the fourth resistor R4 and the fifth resistor R5 are connected in series between the positive output end and the negative output end of the driving power supply, the second zener diode ZD2 is electrically connected between the connection point of the fourth resistor R4 and the fifth resistor R5 and the base of the second triode Q2, the third resistor R3 is electrically connected between the collector of the second triode Q2 and the positive output end of the driving power supply, the collector of the second triode Q2 is electrically connected to the base of the first triode Q1, the second resistor R2 is electrically connected to the collector of the first triode Q1 and the third LED voltage group, the collector ZD 828653 of the first triode Q2 is connected in parallel between the emitter of the second triode ZD 8427 and the second triode Q2, the negative electrode output end of the driving power supply is electrically connected with the emitter electrode of the second triode Q2 and the emitter electrode of the first triode Q1, and the switch SW1 is electrically connected with the collector electrode of the first triode Q1 and the emitter electrode of the first triode Q1.

5. An LED lamp control circuit according to any one of claims 1 to 4, wherein: the chip model of dimming control module is K9282, enable the pin and be No. 5 pins of K9282, VCC holds No. 1 pin for K9282, GND end is No. 4 pins of K9282, the output pin is No. 3 pins of K9282.

6. An LED lamp control circuit according to any one of claims 1 to 4, wherein: the number of the LED lamps of the first LED lamp group is the same as that of the second LED lamp group.

7. An LED lamp control circuit according to any one of claims 1 to 4, wherein: the first LED lamp set is cold white light, and the second LED lamp set is warm white light.

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