WO2021104225A1

WO2021104225A1 - Circuit for regulating light and color temperature

Info

Publication number: WO2021104225A1
Application number: PCT/CN2020/131010
Authority: WO
Inventors: 李文龙; 曹开波
Original assignee: 科特亚照明(上海)有限公司
Priority date: 2019-11-29
Filing date: 2020-11-24
Publication date: 2021-06-03
Also published as: CN110740541A

Abstract

Disclosed in the present invention is a circuit for regulating light and color temperature, which belongs to the field of illumination. The circuit for regulating light and color temperature converts a received trigger signal into an electrical signal using a receiving module, generates two pulse width modulation signals using a control module according to the electrical signal, and generates two control signals by means of a drive module according to the two pulse width modulation signals, and controls the brightness and the color temperature of a light source module by means of the two control signals. The regulation of the brightness and the color temperature of a light source module can be realized by means of the control of two pulse width modulation signals, thereby achieving the purpose of regulating the brightness and the color temperature of the light source while reducing the space occupied by the wiring.

Description

Circuit for adjusting light and color temperature

Technical field

The invention relates to the field of lighting, in particular to a circuit for adjusting light and color temperature.

Background technique

With the development of smart homes, the application of smart lights is becoming more and more popular. The dimming of a single lamp or the color temperature of a single lamp is far from satisfying people's needs. Instead, more diversified and convenient lamps are pursued. Compared with wired devices, existing devices that use wireless methods such as WIFI or Bluetooth to adjust light (or power) and color temperature have higher costs and relatively cumbersome user operations. The current wired dimming and color temperature device occupies a relatively large space, and the wiring takes up a large space.

However, due to more and more application scenarios of lamps, such as: lamps installed in the room or furniture (such as: wardrobes, bedsides, cabinets), lamps used in electronic products, etc., the requirements for the size of the lamps are getting smaller and smaller. , The requirements for space wiring are becoming more and more stringent.

Summary of the invention

Aiming at the problem that the existing light and color temperature adjustment equipment occupies a large volume of space, a circuit for light and color temperature adjustment that is designed to occupy a small space and is convenient for wiring is provided.

A circuit for adjusting light and color temperature, including:

Light source module;

The receiving module is used to receive a trigger signal and convert the trigger signal into an electrical signal;

A control module, connected to the receiving module, and configured to generate two pulse width modulation signals according to the electrical signal;

The driving module is respectively connected to the control module and the light source module, and is configured to generate two control signals according to the two pulse width modulation signals, and control the brightness and color temperature of the light source module through the two control signals;

The power supply module is respectively connected with the receiving module, the control module and the driving module, and is used for supplying power to the receiving module, the control module and the driving module.

Preferably, the receiving module adopts a rotary encoder, and the rotary encoder includes the first output terminal, the second output terminal, and the third output terminal.

Preferably, the rotary encoder further includes:

A trigger switch, one end of the trigger switch is grounded;

A rotary switch, the rotary switch includes a fourth output terminal, a fifth output terminal and a ground terminal;

A first resistor, one end of the first resistor is connected to the fourth output terminal;

A second resistor, one end of the second resistor is connected to the other end of the first resistor to form the power supply end of the rotary encoder, and the other end of the second resistor is connected to the other end of the trigger switch to form The first output terminal of the rotary encoder;

A third resistor, one end of the third resistor is connected to the fourth output terminal, and the other end of the third resistor forms the second output terminal of the rotary encoder;

A fourth resistor, one end of the fourth resistor is connected to the fifth output terminal, and the other end of the fourth resistor forms the third output terminal of the rotary encoder.

Preferably, the control module adopts a single-chip microcomputer, and the single-chip microcomputer includes a first input terminal, a second input terminal, a third input terminal, a sixth output terminal, and a seventh output terminal. The sixth output terminal is used to output the first input terminal, the second input terminal, the third input terminal, the sixth output terminal, and the seventh output terminal. A pulse width modulation signal, the seventh output terminal is used to output a second pulse width modulation signal;

The first input end of the single-chip microcomputer is connected to the first output end of the rotary encoder, the second input end of the single-chip microcomputer is connected to the second output end of the rotary encoder, and the third The input terminal is connected with the third output terminal of the rotary encoder.

Preferably, the driving module includes:

The fourth input terminal is used to receive the first pulse width modulation signal;

The fifth input terminal is used to receive the second pulse width modulation signal;

The eighth output terminal is used to output the first control signal;

The ninth output terminal; used to output the second control signal;

A driver, the driver includes: a sixth input terminal, a seventh input terminal, a tenth output terminal, an eleventh output terminal, and a twelfth output terminal;

A first field effect transistor, the source of the first field effect transistor is grounded, and the gate of the first field effect transistor is connected to the sixth input terminal of the driver to form the fourth input terminal of the driving module;

A second field effect transistor, the source of the second field effect transistor is grounded, and the gate of the second field effect transistor is connected to the seventh input terminal of the driver to form the fifth input terminal of the driving module;

A third field effect transistor, the gate of the third field effect transistor is connected to the tenth output terminal of the driver, and the drain of the third field effect transistor is connected to the drain of the second field effect transistor. Connecting together to form the eighth output end of the driving module;

A fourth field effect transistor, the source of the fourth field effect transistor is connected to the eleventh output terminal of the driver, and the gate of the fourth field effect transistor is connected to the twelfth output terminal of the driver. The output terminal is connected, and the drain of the fourth field effect transistor and the drain of the first field effect transistor are connected together to form the ninth output terminal of the driving module.

Preferably, the light source module includes:

The first control input terminal is used to connect with the eighth output terminal of the drive module;

The second control input terminal is used to connect with the ninth output terminal of the drive module;

A first color temperature adjustable light source circuit, the first color temperature adjustable light source circuit includes a third control input terminal, and the third control input terminal forms the first control input terminal;

A second color temperature adjustable light source circuit, the second color temperature adjustable light source circuit includes a fourth control input terminal, and the fourth control input terminal forms the second control input terminal.

Preferably, the first color temperature adjustable light source circuit includes: N first color temperature adjustable light sources connected in series, where N is a positive integer;

The second color temperature adjustable light source circuit includes: M second color temperature adjustable light sources connected in series, where M is a positive integer;

In the first color temperature adjustable light source circuit, the N first color temperature adjustable light sources connected in series are connected in series in a positive connection mode;

The N second color temperature adjustable light sources connected in series in the second color temperature adjustable light source circuit are connected in series in a reverse connection manner.

The N second color temperature adjustable light sources connected in series in the second color temperature adjustable light source circuit are connected in series in a positive connection manner.

Preferably, the power supply module includes:

A rectifier diode, the anode of the rectifier diode is connected to a positive voltage;

A first capacitor, one end of the first capacitor is connected to the cathode of the rectifier diode, and the other end of the first capacitor is grounded;

A voltage stabilizer, the input terminal of the voltage stabilizer is connected to the cathode of the rectifier diode and one end of the capacitor, and the common end of the voltage stabilizer is grounded;

The second capacitor is connected between the output terminal and the common terminal of the voltage regulator.

Preferably, the light source module adopts an LED circuit.

The beneficial effects of the above technical solutions:

In this technical solution, the circuit for dimming and color temperature uses a receiving module to convert the received trigger signal into an electrical signal; the control module is used to generate two pulse width modulation signals according to the electrical signal; the driving module is used to generate two pulse width modulation signals according to the two pulse width modulation signals Two control signals are generated, and the brightness and color temperature of the light source module are controlled by the two control signals. The brightness and color temperature of the light source module can be adjusted through the control of two pulse width modulation signals, which achieves the purpose of reducing the space occupied by the wiring and realizing the brightness and color temperature of the light source.

Description of the drawings

FIG. 1 is a block diagram of an embodiment of the circuit for dimming and color temperature according to the present invention;

2 is a circuit diagram of an embodiment of the light source module of the present invention;

Figure 3 is a circuit diagram of an embodiment of the receiving module of the present invention;

Figure 4 is a circuit diagram of an embodiment of the control module of the present invention;

FIG. 5 is a circuit diagram of an embodiment of the driving module according to the present invention;

Figure 6 is a schematic diagram of the circuit connection of the receiving module, the control module and the drive module;

Figures 7a-7d are waveform diagrams of LED A and LED B;

Fig. 8 is a circuit diagram of an embodiment of the power supply module of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other if there is no conflict.

The present invention will be further described below with reference to the drawings and specific embodiments, but it is not a limitation of the present invention.

As shown in Fig. 1 to Fig. 7(a-d), the present invention provides a circuit for dimming and color temperature adjustment, including:

Light source module 4;

Further, the light source module 4 includes:

The first control input terminal is used to connect with the eighth output terminal of the driving module 3;

The second control input terminal is used to connect with the ninth output terminal of the driving module 3;

In this embodiment, the light source module 4 may adopt an LED circuit.

As a preferred embodiment, the first color temperature adjustable light source circuit may include: N first color temperature adjustable light sources connected in series, where N is a positive integer;

It should be noted that the first color temperature adjustable light source circuit may include a plurality of parallel branches of N first color temperature adjustable light source groups connected in series.

It should be noted that: the second color temperature adjustable light source circuit may include a plurality of parallel branches of M second color temperature adjustable light source groups connected in series.

In this embodiment, the first color temperature adjustable light source circuit and the second color temperature adjustable light source circuit have different color temperatures, where the first color temperature adjustable light source circuit may have a 4000K color temperature; the second color temperature adjustable light source circuit may have a 2700K color temperature .

By way of example and not limitation, referring to Fig. 2, the first color temperature adjustable light source circuit LED A may include two parallel branches. The first parallel branch is composed of a first light emitting diode W1, a second light emitting diode W3, and a third light emitting diode W5. , The second parallel branch is composed of a fourth light-emitting diode W2, a fifth light-emitting diode W4, and a sixth light-emitting diode W6; the light-emitting diodes of each branch are connected in a forward connection manner.

The second color temperature adjustable light source circuit LED B may include two parallel branches, the third parallel branch is composed of a seventh light emitting diode C3, an eighth light emitting diode C6, and a ninth light emitting diode C12, and the fourth parallel branch is composed of a tenth light emitting diode C4 is composed of the eleventh light-emitting diode C7 and the twelfth light-emitting diode C13; the light-emitting diodes of each branch are connected in reverse connection.

As a preferred embodiment, the first color temperature adjustable light source circuit includes: N first color temperature adjustable light sources connected in series, where N is a positive integer;

The receiving module 1 is configured to receive a trigger signal and convert the trigger signal into an electrical signal;

Further, referring to FIG. 3, the receiving module 1 may adopt a rotary encoder, and the rotary encoder includes the first output terminal, the second output terminal, and the third output terminal.

Specifically, the rotary encoder may further include:

Trigger switch S2, one end of said trigger switch S2 is grounded;

A rotary switch S1, the rotary switch S1 includes a fourth output terminal, a fifth output terminal and a ground terminal;

A first resistor R10, one end of the first resistor R10 is connected to the fourth output terminal;

A second resistor R17, one end of the second resistor R17 is connected to the other end of the first resistor R10 to form the power supply terminal of the rotary encoder, and the other end of the second resistor R17 is connected to the trigger switch S2 The other end of is connected to form the first output end of the rotary encoder;

A third resistor R12, one end of the third resistor R12 is connected to the fourth output end, and the other end of the third resistor R12 forms the second output end of the rotary encoder;

A fourth resistor R11, one end of the fourth resistor R11 is connected to the fifth output terminal, and the other end of the fourth resistor R11 forms the third output terminal of the rotary encoder.

By way of example and not limitation, the receiving module 1 may further include: a third capacitor C14, a fourth capacitor C10, a fifth capacitor C11, and a fifth resistor R9. The third capacitor C14 is connected in parallel with the trigger switch S2; one end of the fourth capacitor C10 and the other end of the fourth resistor R11 are connected to form the third output end of the rotary encoder, and the other end of the fourth capacitor C10 is grounded; fifth One end of the capacitor C11 is connected to one end of the first resistor R10, one end of the third resistor R12 and the fourth output end of the knob switch S1; one end of the fifth resistor R9 is connected to one end of the fourth resistor R11, and the other end of the fifth resistor R9 It is connected to one end of the second resistor R17 and the other end of the first resistor R10.

The control module 2, connected to the receiving module 1, is used to generate two pulse width modulation signals (a first pulse width modulation signal CC and a second pulse width modulation signal WW) according to the electrical signal;

Further, the control module 2 may adopt a single-chip microcomputer U2. The single-chip microcomputer U2 includes a first input terminal, a second input terminal, a third input terminal, a sixth output terminal, and a seventh output terminal. For outputting a first pulse width modulation signal, the seventh output terminal is used for outputting a second pulse width modulation signal;

The first input terminal of the single-chip microcomputer U2 is connected with the first output terminal of the rotary encoder, the second input terminal of the single-chip microcomputer U2 is connected with the second output terminal of the rotary encoder, and the single-chip microcomputer U2 is connected with the second output terminal of the rotary encoder. The third input terminal of is connected with the third output terminal of the rotary encoder.

In this embodiment, the single-chip microcomputer U2 is a 20-pin single-chip microcomputer chip.

4 and 6, the control module 2 also includes a sixth resistor R8, a sixth capacitor C8, and a seventh capacitor C9. The sixth capacitor C8 and the seventh capacitor C9 are used to filter the 5-pin of the single-chip microcomputer U2; the sixth resistor R8 and the sixth capacitor C8 are used to provide the oscillating voltage for the 4-pin of the single-chip microcomputer U2; the 18-pin of the single-chip U2 is used to output the first pulse width modulation signal CC; the 17-pin of the single-chip U2 is used to output the second pulse width modulation Signal WW; the 11-pin of the single-chip microcomputer U2 is connected to the third output of the rotary encoder, the 12-pin of the single-chip microcomputer U2 is connected to the second output of the rotary encoder, and the 13-pin of the single-chip U2 is connected to the rotary encoder The first output terminal is connected, the 11, 12 and 13 pins of the single-chip microcomputer U2 are used to receive the electrical signal sent by the receiving module 1, and the first pulse width modulation signal CC and the second pulse width are generated according to the received electrical signal through the control of the single-chip microcomputer Modulation signal WW.

The driving module 3 is respectively connected to the control module 2 and the light source module 4, and is used to generate two control signals according to the two pulse width modulation signals, and control the brightness of the light source module 4 through the two control signals And color temperature.

Specifically, referring to FIG. 5 to FIG. 6, the driving module 3 may include:

The eighth output terminal is used to output the first control signal;

The ninth output terminal; used to output the second control signal;

Among them, the driver can adopt IR4426 model.

The first field effect transistor Q1, the source of the first field effect transistor Q1 is grounded, and the gate of the first field effect transistor Q1 is connected to the sixth input terminal of the driver to form the first field effect transistor Q1 of the driving module 3. Four input terminals;

The first field effect transistor Q1 is an N-channel effect transistor.

The second field effect transistor Q2, the source of the second field effect transistor Q2 is grounded, and the gate of the second field effect transistor Q2 is connected to the seventh input terminal of the driver together to form the first drive module 3 Five input terminals;

The second field effect transistor Q2 is an N-channel effect transistor.

The third field effect transistor Q3, the gate of the third field effect transistor Q3 is connected to the tenth output terminal of the driver, and the drain of the third field effect transistor Q3 is connected to the second field effect transistor. The drains of Q2 are connected together to form the eighth output terminal of the driving module 3;

The third field effect transistor Q3 is a P-channel effect transistor.

A fourth field effect transistor Q4, the source of the fourth field effect transistor Q4 is connected to the eleventh output terminal of the driver, and the gate of the fourth field effect transistor Q4 is connected to the The twelfth output terminal is connected, and the drain of the fourth field effect transistor Q4 and the drain of the first field effect transistor Q1 are connected together to form the ninth output terminal of the driving module 3.

The fourth field effect transistor Q4 is a P-channel effect transistor.

By way of example and not limitation, referring to FIG. 5, the driving module 3 may further include: a first driving resistance R4, a second driving resistance R6, a third driving resistance R15, a fourth driving resistance R16, a fifth driving resistance R13, and a sixth driving resistance. The resistor R14, the first discharge resistor R5, and the second discharge resistor R7. One end of the first drive resistor R4 is connected to the drain of the first field effect transistor Q1; one end of the third drive resistor R15 is connected to the sixth input terminal of the driver, and the other end of the third drive resistor R15 is connected to the other end of the first drive resistor R4 The fourth input terminal of the drive module 3 is formed together; one end of the second drive resistor R6 is connected to the drain of the second field effect transistor Q2; one end of the fourth drive resistor R16 is connected to the seventh input terminal of the driver, and the fourth drive The other end of the resistor R16 is connected with the other end of the second drive resistor R6 to form the fifth input end of the drive module 3; the first discharge resistor R5 is connected to one end of the first drive resistor R4 and the source of the first field effect transistor Q1 The second discharge resistor R7 is connected to one end of the second drive resistor R6 and the source of the second field effect transistor Q2; the fifth drive resistor R13 is connected in series between the gate of the third field effect transistor Q3 and the tenth output terminal of the driver ; The sixth driving resistor R14 is connected in series between the gate of the fourth field effect transistor Q4 and the twelfth output terminal of the driver.

In this embodiment, the driving module 3 uses the H-bridge Pmos, and the driving module 3 is a low-voltage, high-speed power MOSFET (metal oxide half field effect transistor) and IGBT (insulated gate bipolar transistor) driver. There are two sets of drive outputs (the eighth output terminal and the ninth output terminal), corresponding to two inputs (the first pulse width modulation signal CC and the second pulse width modulation signal WW), input a low-power signal, you can drive a high-power IGBT Match the propagation delay between the two channels.

In practical applications, the driving module 3 can be connected to the light source module 4 through a splitter, so as to achieve the purpose of controlling multiple color temperature adjustable light source circuits at the same time.

In this embodiment, generating a trigger signal by controlling the receiving module 1 includes the following situations:

The first trigger signal can be generated by short pressing the knob switch (<0.5s), and the light source module 4 (such as LED light source) can be lighted up by the control module 2 and the drive module 3. The default state of the first power-on is two channels (2700K). And 4000K) The maximum brightness duty ratio Ton is 50% (refer to Figure 7a); if the power is not turned off last time, the last brightness time Ton and ratio status will be memorized;

If you short press the knob switch again (<0.5s), a second trigger signal is generated, and the brightness of the light source module 4 gradually decreases until it goes out;

Long press the knob switch (>1s) to generate the third trigger signal, the ratio of the duty cycle Ton of the first pulse width modulation signal CC and the second pulse width modulation signal WW remains unchanged, and decreases synchronously with the increase of time ( Referring to Fig. 7b, T1=T1a+T1b, T2=T2a+T2b, T3=T3a+T3b, T4=T4a+T4b), until it is zero.

If the knob switch is pressed again for a long time (>1s) to generate the fourth trigger signal, the ratio of the duty cycle Ton of the first pulse width modulation signal CC and the second pulse width modulation signal WW remains unchanged, and increases synchronously with the increase of time. Until it reaches the state of the duty cycle Ton before long pressing the knob.

Rotating the knob to the right generates the fifth trigger signal. As the rotation angle increases, the duty cycle Ton of the first pulse width modulation signal CC increases, and the duty cycle Ton of the second pulse width modulation signal WW decreases (refer to Figure 7c, T1+ T2=T1a+T2a), when the rotation angle reaches the maximum, the duty ratio of the first pulse width modulation signal CC is 1, and the duty ratio of the second pulse width modulation signal WW is 0. The increase and decrease ratios are synchronized in the above process.

Turn the knob to the left to generate the sixth trigger signal. As the rotation angle increases, the duty cycle Ton of the second pulse width modulation signal WW increases, and the duty cycle Ton of the first pulse width modulation signal CC decreases (refer to Figure 7d, T3+T4 = T3a+T4a), when the rotation angle reaches the maximum, the duty ratio of the second pulse width modulation signal WW is 1, and the duty ratio of the first pulse width modulation signal CC is 0, and the increase and decrease ratios are synchronized in the above process.

As a more preferred embodiment, the circuit for dimming and color temperature adjustment of the present invention may further include: a power supply module 5, and the power supply module 5 is connected to the receiving module 1, the control module 2 and the driving module respectively. 3 connection, used to supply power to the receiving module 1, the control module 2 and the driving module 3.

Further, the power supply module 5 described with reference to FIG. 8 may include:

A rectifier diode D1, the anode of the rectifier diode D1 is connected to a positive voltage;

A first capacitor C2, one end of the first capacitor C2 is connected to the cathode of the rectifier diode D1, and the other end of the first capacitor C2 is grounded;

Voltage stabilizer U1, the input end of the voltage stabilizer U1 is connected to the cathode of the rectifier diode D1 and one end of the capacitor, and the common end of the voltage stabilizer U1 is grounded;

The second capacitor C1 is connected between the output terminal and the common terminal of the voltage stabilizer U1.

In this embodiment, the AC voltage is rectified by the rectifier diode D1, filtered by the first capacitor C2, input to the regulator U1 to output the DC voltage, and filtered by the second capacitor C1 to obtain a 5V voltage.

In practical applications, the input AC voltage of the power supply module 5 is between 90V and 277V, and the frequency is 50/60Hz; the output power of the power supply module 5 is 12V/24V, and the current is between 0.5A and 3A. The power supply module 5 can select the corresponding power (or output current) according to the number of light sources in the actual light source module 4.

In this embodiment, the circuit for dimming and color temperature uses the receiving module 1 to convert the received trigger signal into an electrical signal; the control module 2 is used to generate two pulse width modulation signals according to the electrical signal; The pulse width modulation signal generates two control signals, and the brightness and color temperature of the light source module 4 are controlled by the two control signals. The brightness and color temperature of the light source module 4 can be adjusted through the control of the two pulse width modulation signals, which achieves the purpose of reducing the space occupied by the wiring and realizing the brightness and color temperature of the light source.

The above descriptions are only preferred embodiments of the present invention, and do not limit the implementation and protection scope of the present invention. For those skilled in the art, they should be able to realize that all equivalents made by using the description and illustrations of the present invention are equivalent. The solutions obtained by substitutions and obvious changes should all be included in the protection scope of the present invention.

Claims

A circuit for adjusting light and color temperature, which is characterized in that it comprises:

Light source module;

The receiving module is used to receive a trigger signal and convert the trigger signal into an electrical signal;

A control module, connected to the receiving module, and configured to generate two pulse width modulation signals according to the electrical signal;

The driving module is respectively connected to the control module and the light source module, and is configured to generate two control signals according to the two pulse width modulation signals, and control the brightness and color temperature of the light source module through the two control signals;

The power supply module is respectively connected with the receiving module, the control module and the driving module, and is used for supplying power to the receiving module, the control module and the driving module.
The circuit for dimming and color temperature adjustment according to claim 1, wherein the receiving module adopts a rotary encoder, and the rotary encoder includes the first output terminal, the second output terminal, and the third output terminal. The output terminal.
The circuit for adjusting light and color temperature according to claim 2, wherein the rotary encoder further comprises:

A trigger switch, one end of the trigger switch is grounded;

A rotary switch, the rotary switch includes a fourth output terminal, a fifth output terminal and a ground terminal;

A first resistor, one end of the first resistor is connected to the fourth output terminal;

A second resistor, one end of the second resistor is connected to the other end of the first resistor to form the power supply end of the rotary encoder, and the other end of the second resistor is connected to the other end of the trigger switch to form The first output terminal of the rotary encoder;

A third resistor, one end of the third resistor is connected to the fourth output terminal, and the other end of the third resistor forms the second output terminal of the rotary encoder;

A fourth resistor, one end of the fourth resistor is connected to the fifth output terminal, and the other end of the fourth resistor forms the third output terminal of the rotary encoder.
The circuit for dimming and color temperature adjustment according to claim 2, wherein the control module adopts a single-chip microcomputer, and the single-chip microcomputer includes a first input terminal, a second input terminal, a third input terminal, a sixth output terminal, and A seventh output terminal, where the sixth output terminal is used to output a first pulse width modulation signal, and the seventh output terminal is used to output a second pulse width modulation signal;

The first input end of the single-chip microcomputer is connected to the first output end of the rotary encoder, the second input end of the single-chip microcomputer is connected to the second output end of the rotary encoder, and the third The input terminal is connected with the third output terminal of the rotary encoder.
The circuit for adjusting light and color temperature according to claim 4, wherein the driving module comprises:

The fourth input terminal is used to receive the first pulse width modulation signal;

The fifth input terminal is used to receive the second pulse width modulation signal;

The eighth output terminal is used to output the first control signal;

The ninth output terminal; used to output the second control signal;

A driver, the driver includes: a sixth input terminal, a seventh input terminal, a tenth output terminal, an eleventh output terminal, and a twelfth output terminal;

A first field effect transistor, the source of the first field effect transistor is grounded, and the gate of the first field effect transistor is connected to the sixth input terminal of the driver to form the fourth input terminal of the driving module;

A second field effect transistor, the source of the second field effect transistor is grounded, and the gate of the second field effect transistor is connected to the seventh input terminal of the driver to form the fifth input terminal of the driving module;

A third field effect transistor, the gate of the third field effect transistor is connected to the tenth output terminal of the driver, and the drain of the third field effect transistor is connected to the drain of the second field effect transistor. Connecting together to form the eighth output end of the driving module;

A fourth field effect transistor, the source of the fourth field effect transistor is connected to the eleventh output terminal of the driver, and the gate of the fourth field effect transistor is connected to the twelfth output terminal of the driver. The output terminal is connected, and the drain of the fourth field effect transistor and the drain of the first field effect transistor are connected together to form the ninth output terminal of the driving module.
The circuit for adjusting light and color temperature according to claim 5, wherein the light source module comprises:

The first control input terminal is used to connect with the eighth output terminal of the drive module;

The second control input terminal is used to connect with the ninth output terminal of the drive module;

A first color temperature adjustable light source circuit, the first color temperature adjustable light source circuit includes a third control input terminal, and the third control input terminal forms the first control input terminal;

A second color temperature adjustable light source circuit, the second color temperature adjustable light source circuit includes a fourth control input terminal, and the fourth control input terminal forms the second control input terminal.
The circuit for adjusting light and color temperature according to claim 6, wherein the first color temperature adjustable light source circuit comprises: N first color temperature adjustable light sources connected in series, wherein N is a positive integer;

The second color temperature adjustable light source circuit includes: M second color temperature adjustable light sources connected in series, where M is a positive integer;

In the first color temperature adjustable light source circuit, the N first color temperature adjustable light sources connected in series are connected in series in a positive connection mode;

The N second color temperature adjustable light sources connected in series in the second color temperature adjustable light source circuit are connected in series in a reverse connection manner.
The circuit for adjusting light and color temperature according to claim 6, wherein the first color temperature adjustable light source circuit comprises: N first color temperature adjustable light sources connected in series, wherein N is a positive integer;

The second color temperature adjustable light source circuit includes: M second color temperature adjustable light sources connected in series, where M is a positive integer;

In the first color temperature adjustable light source circuit, the N first color temperature adjustable light sources connected in series are connected in series in a positive connection mode;

The N second color temperature adjustable light sources connected in series in the second color temperature adjustable light source circuit are connected in series in a positive connection manner.
The circuit for adjusting light and color temperature according to claim 1, wherein the power supply module comprises:

A rectifier diode, the anode of the rectifier diode is connected to a positive voltage;

A first capacitor, one end of the first capacitor is connected to the cathode of the rectifier diode, and the other end of the first capacitor is grounded;

A voltage stabilizer, the input terminal of the voltage stabilizer is connected to the cathode of the rectifier diode and one end of the capacitor, and the common end of the voltage stabilizer is grounded;

The second capacitor is connected between the output terminal and the common terminal of the voltage regulator.
The circuit for dimming and color temperature adjustment according to claim 1, wherein the light source module adopts an LED circuit.