Timing lamp driving circuit

Abstract

The utility model relates to the technical field of light-emitting diode (LED) dimming, in particular to a timing lamp driving circuit, which comprises a linear power supply driving module, a micro control unit (MCU) master control module, a dial-up gear selection module and an LED module, and is characterized in that two input ends of the MCU master control module are electrically connected with a pulse width modulation (PWM) dimming end of the linear power supply driving module and the dial-up gear selection module respectively in a one-to-one correspondence manner; the power supply output end of the linear power supply driving module is electrically connected with the power supply end of the MCU main control module, so that the linear power supply driving module outputs 5V voltage as working voltage of the MCU main control module, the output end of the linear power supply driving module is electrically connected with the LED module, the commercial power is input to the linear power supply driving module for supplying power, and the linear power supply driving module can drive the LED module. And meanwhile, 5V voltage is output to supply power to the MCU main control module, and the MCU main control module monitors a dial-up gear selection signal of the dial-up gear selection module and sends a control signal to the linear power supply driving module, so that timed turn-off of the LED module is realized.

Description

Technical Field

[0001] This utility model relates to the field of LED dimming technology, and in particular to a timer lamp driving circuit. Background Technology

[0002] Existing LED dimming circuits on the market generally include a rectifier and filter module, a switching power supply module, a power supply module (which is also a switching power supply), and an MCU main control module. Such LED dimming circuits require an additional switching power supply to be designed as the working power supply for the MCU main control module, which increases the number of components used in the circuit and complicates the manufacturing process. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a timer lamp driver circuit with a simple circuit structure to realize the timed lamp-off of LED modules.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A timed light driving circuit includes a linear power supply driving module, an MCU main control module, a DIP switch selection module, and an LED module. The two input terminals of the MCU main control module are electrically connected to the PWM dimming terminal of the linear power supply driving module and the DIP switch selection module, respectively. The power output terminal of the linear power supply driving module is electrically connected to the power supply terminal of the MCU main control module, so that the linear power supply driving module outputs a 5V voltage as the operating voltage of the MCU main control module. The output terminal of the linear power supply driving module is electrically connected to the LED module.

[0006] Furthermore, the linear power drive module includes a linear PWM dimming power chip IC1. The PWM dimming terminal of the linear PWM dimming power chip IC1 is electrically connected to the input terminal of the MCU main control module, the power output terminal of the linear PWM dimming power chip IC1 is electrically connected to the power terminal of the MCU main control module, and the output terminal of the linear PWM dimming power chip IC1 is electrically connected to the negative terminal of the LED module.

[0007] Furthermore, the linear power drive module also includes resistors R1 and R3 and capacitor C2. One end of resistor R1 is electrically connected to the mains power and the positive terminal of the LED module, respectively. The other end of resistor R1 is electrically connected to one end of resistor R3, one end of capacitor C2 and the read enable signal terminal of the linear PWM dimming power chip IC1. The other end of resistor R3 is electrically connected to the other end of capacitor C2, and both the other ends of resistor R3 and capacitor C2 are grounded.

[0008] Furthermore, the linear power drive module also includes a resistor R4, one end of which is electrically connected to the chip select signal terminal of the linear PWM dimming power chip IC1, and the other end of which is grounded.

[0009] Furthermore, the linear power drive module also includes a resistor R6, one end of which is electrically connected to the power input terminal of the linear PWM dimming power chip IC1, and the other end of which is electrically connected to the mains power and the positive terminal of the LED module, respectively.

[0010] Furthermore, the linear power drive module also includes an electrolytic capacitor E2 and a resistor R7. One end of the electrolytic capacitor E2 is electrically connected to the mains power, one end of the resistor R7, and the positive terminal of the LED module, respectively. The other end of the electrolytic capacitor E2 is electrically connected to the output terminal of the linear PWM dimming power chip IC1, the mains power, and the negative terminal of the LED module, respectively.

[0011] Furthermore, the DIP switch selection module includes a toggle switch S1, resistors R12, R21, R13, R14, R15, and R16. The first pin of the toggle switch S1 is electrically connected to the twelfth pin, the second pin to the eleventh pin, the third pin to the tenth pin, the fourth pin to the ninth pin, the fifth pin to the eighth pin, and the sixth pin to the seventh pin. The first pin of the toggle switch S1 is electrically connected to one end of resistor R21. The second pin of the toggle switch S1 is electrically connected to one end of resistor R13. The third pin of the toggle switch S1 is electrically connected to one end of resistor R14. The fourth pin of the toggle switch S1 is connected to resistor R15. One end of resistor R12 is electrically connected to one input terminal of the MCU main control module. The fifth pin of the toggle switch S1 is electrically connected to one end of resistor R15. The sixth pin of the toggle switch S1 is electrically connected to one end of resistor R16. The other end of resistor R12 is electrically connected to the power output terminal of the linear power drive module and the power terminal of the MCU main control module. The other end of resistor R21 is electrically connected to the other ends of resistors R13, R14, R15, and R16, and the other ends of resistors R21, R13, R14, R15, and R16 are all grounded.

[0012] Furthermore, the DIP switch selection module also includes a capacitor C4, one end of which is electrically connected to the other end of the resistor R12, the power output terminal of the linear power drive module, and the power terminal of the MCU main control module, and the other end of the capacitor C4 is grounded.

[0013] Furthermore, the MCU main control module includes a chip IC3, the model of which is CM9M131B. The power supply terminal of the chip IC3 is electrically connected to the power output terminals of the DIP switch selection module and the linear power drive module, respectively. The two input terminals of the chip IC3 are electrically connected to the PWM dimming terminals of the DIP switch selection module and the linear power drive module, respectively. The ground terminal of the chip IC3 is grounded.

[0014] Furthermore, it also includes an input rectification and filtering module, which is electrically connected to both the mains power and the linear power drive module.

[0015] The beneficial effects of this utility model are as follows:

[0016] This solution involves setting up a linear power supply driver module, an MCU main control module, a DIP switch selection module, and an LED module. The two input terminals of the MCU main control module are electrically connected to the PWM dimming terminal of the linear power supply driver module and the DIP switch selection module, respectively. The power output terminal of the linear power supply driver module is electrically connected to the power supply terminal of the MCU main control module, allowing the linear power supply driver module to output 5V as the operating voltage of the MCU main control module. The output terminal of the linear power supply driver module is electrically connected to the LED module. AC power is supplied to the linear power supply driver module, which drives the LED module and simultaneously outputs 5V to power the MCU main control module. The MCU main control module monitors the DIP switch selection signal from the DIP switch selection module and sends control signals to the linear power supply driver module to achieve timed LED module shutdown. Attached Figure Description

[0017] Figure 1 This is a block diagram showing the module connection of the timer lamp driving circuit of this utility model;

[0018] Figure 2 This is a circuit diagram of the timer lamp driving circuit of this utility model;

[0019] Label Explanation:

[0020] 1. Linear power supply driver module; 2. MCU main control module; 3. DIP switch selection module; 4. LED module; 5. Input rectification and filtering module. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figure 1 as well as Figure 2 The technical solution adopted by this utility model is as follows:

[0023] A timed light driving circuit includes a linear power supply driving module, an MCU main control module, a DIP switch selection module, and an LED module. The two input terminals of the MCU main control module are electrically connected to the PWM dimming terminal of the linear power supply driving module and the DIP switch selection module, respectively. The power output terminal of the linear power supply driving module is electrically connected to the power supply terminal of the MCU main control module, so that the linear power supply driving module outputs a 5V voltage as the operating voltage of the MCU main control module. The output terminal of the linear power supply driving module is electrically connected to the LED module.

[0024] As can be seen from the above description, the beneficial effects of this utility model are as follows:

[0025] This solution involves setting up a linear power supply driver module, an MCU main control module, a DIP switch selection module, and an LED module. The two input terminals of the MCU main control module are electrically connected to the PWM dimming terminal of the linear power supply driver module and the DIP switch selection module, respectively. The power output terminal of the linear power supply driver module is electrically connected to the power supply terminal of the MCU main control module, allowing the linear power supply driver module to output 5V as the operating voltage of the MCU main control module. The output terminal of the linear power supply driver module is electrically connected to the LED module. AC power is supplied to the linear power supply driver module, which drives the LED module and simultaneously outputs 5V to power the MCU main control module. The MCU main control module monitors the DIP switch selection signal from the DIP switch selection module and sends control signals to the linear power supply driver module to achieve timed LED module shutdown.

[0026] Furthermore, the linear power drive module includes a linear PWM dimming power chip IC1. The PWM dimming terminal of the linear PWM dimming power chip IC1 is electrically connected to the input terminal of the MCU main control module, the power output terminal of the linear PWM dimming power chip IC1 is electrically connected to the power terminal of the MCU main control module, and the output terminal of the linear PWM dimming power chip IC1 is electrically connected to the negative terminal of the LED module.

[0027] As can be seen from the above description, the PWM dimming terminal of the linear PWM dimming power chip IC1 receives the light-off signal from the MCU main control module, thereby turning off the linear PWM dimming power chip IC1 and achieving the purpose of turning off the light; the power output terminal of the linear PWM dimming power chip IC1 can output a 5V voltage to power the MCU main control module and the DIP switch selection module.

[0028] Furthermore, the linear power drive module also includes resistors R1 and R3 and capacitor C2. One end of resistor R1 is electrically connected to the mains power and the positive terminal of the LED module, respectively. The other end of resistor R1 is electrically connected to one end of resistor R3, one end of capacitor C2 and the read enable signal terminal of the linear PWM dimming power chip IC1. The other end of resistor R3 is electrically connected to the other end of capacitor C2, and both the other ends of resistor R3 and capacitor C2 are grounded.

[0029] As can be seen from the above description, resistors R1 and R3 divide the voltage, and capacitor C2 filters out interference. The voltage is then connected to the read enable signal terminal of the linear PWM dimming power supply chip IC1 to provide monitoring voltage for the linear PWM dimming power supply chip IC1.

[0030] Furthermore, the linear power drive module also includes a resistor R4, one end of which is electrically connected to the chip select signal terminal of the linear PWM dimming power chip IC1, and the other end of which is grounded.

[0031] As can be seen from the above description, resistor R4 is a current sampling resistor, which can adjust the maximum power of the entire lamp.

[0032] Furthermore, the linear power drive module also includes a resistor R6, one end of which is electrically connected to the power input terminal of the linear PWM dimming power chip IC1, and the other end of which is electrically connected to the mains power and the positive terminal of the LED module, respectively.

[0033] As can be seen from the above description, resistor R6 is connected to the power input terminal of the linear PWM dimming power supply chip IC1, and supplies power to the linear PWM dimming power supply chip IC1.

[0034] Furthermore, the linear power drive module also includes an electrolytic capacitor E2 and a resistor R7. One end of the electrolytic capacitor E2 is electrically connected to the mains power, one end of the resistor R7, and the positive terminal of the LED module, respectively. The other end of the electrolytic capacitor E2 is electrically connected to the output terminal of the linear PWM dimming power chip IC1, the mains power, and the negative terminal of the LED module, respectively.

[0035] As can be seen from the above description, electrolytic capacitor E2 supplies power to the LED module, and resistor R7 discharges electrolytic capacitor E2 when the light is off.

[0036] Furthermore, the DIP switch selection module includes a toggle switch S1, resistors R12, R21, R13, R14, R15, and R16. The first pin of the toggle switch S1 is electrically connected to the twelfth pin, the second pin to the eleventh pin, the third pin to the tenth pin, the fourth pin to the ninth pin, the fifth pin to the eighth pin, and the sixth pin to the seventh pin. The first pin of the toggle switch S1 is electrically connected to one end of resistor R21. The second pin of the toggle switch S1 is electrically connected to one end of resistor R13. The third pin of the toggle switch S1 is electrically connected to one end of resistor R14. The fourth pin of the toggle switch S1 is connected to resistor R15. One end of resistor R12 is electrically connected to one input terminal of the MCU main control module. The fifth pin of the toggle switch S1 is electrically connected to one end of resistor R15. The sixth pin of the toggle switch S1 is electrically connected to one end of resistor R16. The other end of resistor R12 is electrically connected to the power output terminal of the linear power drive module and the power terminal of the MCU main control module. The other end of resistor R21 is electrically connected to the other ends of resistors R13, R14, R15, and R16, and the other ends of resistors R21, R13, R14, R15, and R16 are all grounded.

[0037] Furthermore, the DIP switch selection module also includes a capacitor C4, one end of which is electrically connected to the other end of the resistor R12, the power output terminal of the linear power drive module, and the power terminal of the MCU main control module, and the other end of the capacitor C4 is grounded.

[0038] As can be seen from the above description, capacitor C4 provides a stable operating voltage for the entire module.

[0039] Furthermore, the MCU main control module includes a chip IC3, the model of which is CM9M131B. The power supply terminal of the chip IC3 is electrically connected to the power output terminals of the DIP switch selection module and the linear power drive module, respectively. The two input terminals of the chip IC3 are electrically connected to the PWM dimming terminals of the DIP switch selection module and the linear power drive module, respectively. The ground terminal of the chip IC3 is grounded.

[0040] Furthermore, it also includes an input rectification and filtering module, which is electrically connected to both the mains power and the linear power drive module.

[0041] As can be seen from the above description, the input rectifier and filter module can convert AC mains power into pulsating DC power.

[0042] Please refer to Figure 1 and Figure 2 As shown, Embodiment 1 of this utility model is as follows:

[0043] Please refer to Figure 1 A timed light driving circuit includes a linear power supply driving module 1, an MCU main control module 2, a DIP switch selection module 3, and an LED module 4. The two input terminals of the MCU main control module 2 are electrically connected to the PWM dimming terminal of the linear power supply driving module 1 and the DIP switch selection module 3, respectively. The power output terminal of the linear power supply driving module 1 is electrically connected to the power supply terminal of the MCU main control module 2, so that the linear power supply driving module 1 outputs a 5V voltage as the working voltage of the MCU main control module 2. The output terminal of the linear power supply driving module 1 is electrically connected to the LED module 4.

[0044] Please refer to Figure 2 The linear power drive module 1 includes a linear PWM dimming power chip IC1 (model MT7653). The PWM dimming terminal of the linear PWM dimming power chip IC1 is electrically connected to the input terminal of the MCU main control module 2. The power output terminal of the linear PWM dimming power chip IC1 is electrically connected to the power terminal of the MCU main control module 2. The output terminal of the linear PWM dimming power chip IC1 is electrically connected to the negative terminal of the LED module 4.

[0045] Please refer to Figure 2 The linear power drive module 1 further includes a resistor R1 (560kΩ), a resistor R3 (3.9kΩ), and a capacitor C2 (1nF). One end of the resistor R1 is electrically connected to the mains power and the positive terminal of the LED module 4, respectively. The other end of the resistor R1 is electrically connected to one end of the resistor R3, one end of the capacitor C2, and the read enable signal terminal of the linear PWM dimming power chip IC1. The other end of the resistor R3 is electrically connected to the other end of the capacitor C2, and both the other ends of the resistor R3 and the other ends of the capacitor C2 are grounded.

[0046] Please refer to Figure 2 The linear power drive module 1 further includes a resistor R4 (resistance value of 5.6Ω), one end of which is electrically connected to the chip select signal terminal of the linear PWM dimming power chip IC1, and the other end of which is grounded.

[0047] Please refer to Figure 2 The linear power drive module 1 also includes a resistor R6 (resistance value of 100Ω). One end of the resistor R6 is electrically connected to the power input terminal of the linear PWM dimming power chip IC1, and the other end of the resistor R6 is electrically connected to the mains power and the positive terminal of the LED module 4, respectively.

[0048] Please refer to Figure 2The linear power drive module 1 further includes an electrolytic capacitor E2 (capacitance value of 56μF) and a resistor R7 (resistance value of 330kΩ). One end of the electrolytic capacitor E2 is electrically connected to the mains power, one end of the resistor R7 and the positive terminal of the LED module 4, respectively. The other end of the electrolytic capacitor E2 is electrically connected to the output terminal of the linear PWM dimming power chip IC1, the mains power and the negative terminal of the LED module 4, respectively.

[0049] Please refer to Figure 2 The DIP switch selection module 3 includes a toggle switch S1 (model SK25D02G4M), resistors R12 (330kΩ), R21 (1kΩ), R13 (5.1kΩ), R14 (10kΩ), R15 (100kΩ), and R16 (200kΩ). The first pin of the toggle switch S1 is electrically connected to the twelfth pin, the second pin to the eleventh pin, the third pin to the tenth pin, the fourth pin to the ninth pin, the fifth pin to the eighth pin, and the sixth pin to the seventh pin. The first pin of the toggle switch S1 is electrically connected to one end of resistor R21, and the second pin of the toggle switch S1 is electrically connected to one end of resistor R13. The third pin is electrically connected to one end of resistor R14. The fourth pin of the toggle switch S1 is electrically connected to one end of resistor R12 and one input terminal of MCU main control module 2. The fifth pin of the toggle switch S1 is electrically connected to one end of resistor R15. The sixth pin of the toggle switch S1 is electrically connected to one end of resistor R16. The other end of resistor R12 is electrically connected to the power output terminal of linear power drive module 1 and the power terminal of MCU main control module 2. The other end of resistor R21 is electrically connected to the other ends of resistors R13, R14, R15 and R16, and the other ends of resistors R21, R13, R14, R15 and R16 are all grounded.

[0050] Please refer to Figure 2 The DIP switch selection module 3 also includes a capacitor C4 (capacitance value of 1μF). One end of the capacitor C4 is electrically connected to the other end of the resistor R12, the power output terminal of the linear power drive module 1, and the power terminal of the MCU main control module 2, respectively, and the other end of the capacitor C4 is grounded.

[0051] Please refer to Figure 2The MCU main control module 2 includes a chip IC3, the model of which is CM9M131B. The power supply terminal of the chip IC3 is electrically connected to the power output terminal of the DIP switch selection module 3 and the linear power drive module 1, respectively. The two input terminals of the chip IC3 are electrically connected to the PWM dimming terminals of the DIP switch selection module 3 and the linear power drive module 1, respectively. The ground terminal of the chip IC3 is grounded.

[0052] The MCU main control module 2 also includes capacitors C5 (1μF), C7 (10pF), C6 (10pF), C1 (1μF), and crystal oscillator Y1 (12MHz). For the specific connection relationships between these components, please refer to [reference needed]. Figure 2 .

[0053] The LED module 4 includes LED WL1 (using 2835 LED chips) and LED WL4 (using 2835 LED chips). Please refer to [reference needed] for the specific connection relationships between the components. Figure 2 .

[0054] Please refer to Figure 1 It also includes an input rectifier and filter module 5, which is electrically connected to both the mains power and the linear power drive module 1. The input rectifier and filter module 5 includes a fuse resistor FR1 (10Ω), a varistor RV1 (270V), a rectifier bridge BR1 (MB10F), and an electrolytic capacitor E1 (4.7μF). For the specific connection relationships between these components, please refer to [reference needed]. Figure 2 .

[0055] The working principle of the above-mentioned timer lamp driver circuit is as follows:

[0056] The alternating current is converted into pulsating direct current through the rectifier bridge BR1 and the electrolytic capacitor E1. The fuse resistor FR1 provides circuit fault protection, and the varistor RV1 absorbs surges and protects the downstream circuits. When the entire lighting system has a high power factor requirement, the electrolytic capacitor E1 is not necessary.

[0057] The PWM dimming terminal (pin 2) of the linear PWM dimming power supply chip IC1 receives the lamp-off signal from the MCU main control module 2, thereby turning off the linear PWM dimming power supply chip IC1 and achieving the purpose of turning off the lamp. Resistors R1 and R3 form a voltage divider, and after filtering out interference by capacitor C2, they are connected to the read enable signal terminal (pin 3) of the linear PWM dimming power supply chip IC1 to provide monitoring voltage for the linear PWM dimming power supply chip IC1. Resistor R4 is a current sampling resistor, which can adjust the maximum power of the entire lamp. Resistor R6 is connected to the power input terminal (pin 8) of the linear PWM dimming power supply chip IC1 to supply power to the linear PWM dimming power supply chip IC1. Electrolytic capacitor E2 supplies power to LED module 4. When the lamp is turned off, resistor R7 discharges electrolytic capacitor E2.

[0058] The toggle switch S1, along with one pull-up resistor (R12) and five pull-down resistors (R21, R13, R14, R15, and R16), forms a timing selection circuit. When the slider of toggle switch S1 is moved, different timing levels can be selected. The voltage divider signal, after interference is filtered by capacitor C5, provides the selection signal to the MCU main control module 2. Depending on the settings of the MCU main control module 2, timing levels of 0.5 hours, 1 hour, 2 hours, 4 hours, and normally open (five levels) can be selected, or other settings can be changed by adjusting the MCU main control module 2. Capacitor C4 provides a stable operating voltage for the entire module. Here, the toggle switch selection module 3 and the MCU main control module 2 are connected by only one pin, reducing the MCU resource usage and lowering the cost of the MCU main control module 2. Alternatively, the toggle switch can be replaced with a sliding rheostat, which can also achieve timing selection.

[0059] The IC3 chip, model CM9M131B, is an eight-pin microcontroller. It is paired with crystal oscillator Y1, capacitors C6 and C7. Crystal oscillator Y1 provides precise timing for the microcontroller. When general timing requirements are needed, crystal oscillator Y1, capacitors C6 and C7 are not necessary, and the timing can be done using the internal timer of the IC3 chip. Capacitor C1 provides operating power to the IC3.

[0060] In summary, the timing lamp driving circuit provided by this utility model comprises a linear power supply driving module, an MCU main control module, a DIP switch selection module, and an LED module. The two input terminals of the MCU main control module are electrically connected to the PWM dimming terminal of the linear power supply driving module and the DIP switch selection module, respectively. The power output terminal of the linear power supply driving module is electrically connected to the power supply terminal of the MCU main control module, so that the linear power supply driving module outputs a 5V voltage as the operating voltage of the MCU main control module. The output terminal of the linear power supply driving module is electrically connected to the LED module. The mains power input supplies power to the linear power supply driving module, which can drive the LED module and simultaneously output a 5V voltage to power the MCU main control module. The MCU main control module monitors the DIP switch selection signal of the DIP switch selection module and sends a control signal to the linear power supply driving module to realize the timed switching off of the LED module.

[0061] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A timing lamp driving circuit, characterized by comprising: The linear power supply driving module, the MCU main control module, the dial selection module and the LED module are connected with each other.

2. The timing lamp drive circuit of claim 1, wherein, The linear power supply driving module includes a linear PWM light modulation power chip IC1, the PWM light modulation end of the linear PWM light modulation power chip IC1 is connected with the input end of the MCU main control module, the power output end of the linear PWM light modulation power chip IC1 is connected with the power end of the MCU main control module, and the output end of the linear PWM light modulation power chip IC1 is connected with the negative electrode end of the LED module.

3. The timing lamp driver circuit of claim 2, wherein, The linear power supply driving module further includes a resistor R1, a resistor R3 and a capacitor C2, one end of the resistor R1 is connected with the commercial power and the positive electrode end of the LED module, the other end of the resistor R1 is connected with one end of the resistor R3, one end of the capacitor C2 and the read enable signal end of the linear PWM light modulation power chip IC1, the other end of the resistor R3 is connected with the other end of the capacitor C2, and the other end of the resistor R3 and the other end of the capacitor C2 are grounded.

4. The timing lamp driver circuit of claim 2, wherein, The linear power supply driving module further includes a resistor R4, one end of the resistor R4 is connected with the chip selection signal end of the linear PWM light modulation power chip IC1, and the other end of the resistor R4 is grounded.

5. The timing lamp driver circuit of claim 2, wherein, The linear power supply driving module further includes a resistor R6, one end of the resistor R6 is connected with the power input end of the linear PWM light modulation power chip IC1, and the other end of the resistor R6 is connected with the commercial power and the positive electrode end of the LED module.

6. The timing lamp driver circuit of claim 2, wherein, The linear power supply driving module further includes an electrolytic capacitor E2 and a resistor R7, one end of the electrolytic capacitor E2 is connected with the commercial power, one end of the resistor R7 and the positive electrode end of the LED module, the other end of the electrolytic capacitor E2 is connected with the output end of the linear PWM light modulation power chip IC1, the commercial power and the negative electrode end of the LED module.

7. The timing lamp driver circuit of claim 1, wherein, The dial selection module comprises a dial switch S1, a resistor R12, a resistor R21, a resistor R13, a resistor R14, a resistor R15 and a resistor R16, the first pin, the second pin, the third pin, the fourth pin, the fifth pin and the sixth pin of the dial switch S1 are electrically connected with the twelfth pin, the eleventh pin, the tenth pin, the ninth pin, the eighth pin and the seventh pin respectively, one end of the resistor R21 is electrically connected with the first pin of the dial switch S1, one end of the resistor R13 is electrically connected with the second pin of the dial switch S1, one end of the resistor R14 is electrically connected with the third pin of the dial switch S1, the fourth pin of the dial switch S1 is electrically connected with one end of the resistor R12 and one input end of the MCU main control module respectively, one end of the resistor R15 is electrically connected with the fifth pin of the dial switch S1, one end of the resistor R16 is electrically connected with the sixth pin of the dial switch S1, the other end of the resistor R12 is electrically connected with the power output end of the linear power driving module and the power supply end of the MCU main control module respectively, the other end of the resistor R21 is electrically connected with the other end of the resistor R13, the other end of the resistor R14, the other end of the resistor R15 and the other end of the resistor R16 respectively, and the other end of the resistor R21, the other end of the resistor R13, the other end of the resistor R14, the other end of the resistor R15 and the other end of the resistor R16 are all grounded.

8. The timing lamp driver circuit of claim 7, wherein, The dial selection module further comprises a capacitor C4, one end of the capacitor C4 is electrically connected with the other end of the resistor R12, the power output end of the linear power driving module and the power supply end of the MCU main control module respectively, and the other end of the capacitor C4 is grounded.

9. The timing lamp driver circuit of claim 1, wherein, The MCU main control module comprises a chip IC3, the model of the chip IC3 is CM9M131B, the power supply end of the chip IC3 is electrically connected with the power output end of the dial selection module and the linear power driving module respectively, two input ends of the chip IC3 are electrically connected with the PWM dimming end of the dial selection module and the linear power driving module respectively, and the ground end of the chip IC3 is grounded.

10. The timing lamp driver circuit of claim 1, wherein, The input rectification filtering module is further comprised, and the input rectification filtering module is electrically connected with the commercial power and the linear power driving module respectively.

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