Double-wire double-color lamp strip control device and circuit

Abstract

The utility model relates to the technical field of lamp strip control, and provides a double-wire double-color lamp strip control device and circuit. The timer comprises a double-line double-color lamp strip, a control circuit arranged between the double-line double-color lamp strip and a power supply, a pulse width modulation generator connected with the control circuit, and a timer module connected with the pulse width modulation generator. The timer module sends the trigger signal to the pulse width modulation generator within the preset time interval, so that the pulse width modulation generator generates the first control signal and the second control signal and transmits the first control signal and the second control signal to the control circuit; therefore, the control circuit adjusts the connection and disconnection of a circuit between the power supply and the double-line double-color lamp strip according to the received control signal, so as to achieve the adjustment of the color temperature and the brightness of the double-line double-color lamp strip.

Description

Technical Field

[0001] This application relates to the technical field of strip light control, and particularly to a dual-line dual-color strip light control device and circuit. Background Art

[0002] Dual-color strip lights, which are widely used in multiple fields such as lighting decoration, smart home, and stage lighting, have an increasing market demand because their variable color effects can significantly enhance the visual effect and user experience.

[0003] The existing dual-color strip light control technology mainly relies on a master integrated circuit (IC) to output complementary pulse width modulation (PWM) with a dead zone adjustable function. By precisely adjusting the duty cycle and phase difference of the PWM signal, fine control of the color of the dual-color strip light is achieved, ensuring natural and accurate color transition. However, the master IC is costly, increasing the market price of dual-color strip light products and limiting the large-scale popularization of dual-color strip lights in the market, such as their widespread application in home decoration. At the same time, the complexity of implementing the dual-color strip light control technology with the master IC also raises the development threshold, requiring developers to have high professional skills and being unfavorable for users to make independent adjustments. Summary of the Utility Model

[0004] In view of this, this application provides a dual-line dual-color strip light control device and circuit to solve the problems of independent adjustment and manufacturing cost of dual-line dual-color strip light control.

[0005] In the first aspect of this application, a dual-line dual-color strip light control device is provided. The control device includes:

[0006] A dual-line dual-color strip light;

[0007] A control circuit disposed between the dual-line dual-color strip light and a power supply, for adjusting the color temperature and brightness of the dual-line dual-color strip light according to a control signal;

[0008] A pulse width modulation generator connected to the control circuit, for outputting a first control signal and a second control signal to the control circuit, so that the control circuit adjusts the on / off of internal sub-circuits according to the first control signal and the second control signal;

[0009] A timer module connected to the pulse width modulation generator, for outputting a trigger signal to the pulse width modulation generator according to a preset time interval, so that the pulse width modulation generator outputs a control signal.

[0010] The second aspect of the present application provides a two-wire and two-color light strip control circuit, which is applied to the two-wire and two-color light strip control device as described above. The control circuit includes: a first control sub-circuit, a second control sub-circuit, a first power supply control sub-circuit, a second power supply control sub-circuit, a first ground control sub-circuit, a second ground control sub-circuit, and a first connection end and a second connection end arranged on both sides of the two-wire and two-color light strip;

[0011] The output end of the first control sub-circuit is connected to the control signal input end of the first power supply control sub-circuit, and the output end of the second control sub-circuit is connected to the control signal input end of the second power supply control sub-circuit;

[0012] The input ends of the first power supply control sub-circuit and the second power supply control sub-circuit are connected to the positive pole of the power supply;

[0013] The input end of the first ground control sub-circuit and the first connection end on one side of the control circuit are connected in parallel to the output end of the first power supply control sub-circuit, and the input end of the second ground control sub-circuit and the second connection end on the other side of the control circuit are connected in parallel to the output end of the second power supply control sub-circuit;

[0014] The output ends of the first ground control sub-circuit and the second ground control sub-circuit are connected to the ground end;

[0015] The control signal input end of the first control sub-circuit and the control signal input end of the second ground control sub-circuit are connected to the first control signal output end of the pulse width modulation generator;

[0016] The control signal input end of the second control sub-circuit and the control signal input end of the first ground control sub-circuit are connected to the second control signal output end of the pulse width modulation generator.

[0017] In an optional embodiment, the control circuit further includes a first logic judgment sub-circuit connected to the control signal input end of the first control sub-circuit, and a second logic judgment sub-circuit connected to the control signal input end of the second control sub-circuit;

[0018] The input end of the first logic judgment sub-circuit is connected to the control signal input end of the first control sub-circuit, the control signal input end of the first logic judgment sub-circuit is connected to the second control signal output end of the pulse width modulation generator, and the output end of the first logic judgment sub-circuit is connected to the ground end;

[0019] The input terminal of the second logic judgment sub - circuit is connected to the control signal input terminal of the second control sub - circuit. The control signal input terminal of the second logic judgment sub - circuit is connected to the first control signal output terminal of the pulse width modulation generator. The output terminal of the second logic judgment sub - circuit is connected to the ground terminal.

[0020] In an alternative embodiment, the first logic judgment sub - circuit includes a first triode, and the second logic judgment sub - circuit includes a second triode.

[0021] The collector of the first triode is connected to the control signal input terminal of the first control sub - circuit. The base of the first triode is connected to the second control signal output terminal of the pulse width modulation generator. The emitter of the first triode is connected to the ground terminal.

[0022] The collector of the second triode is connected to the control signal input terminal of the second control sub - circuit. The base of the second triode is connected to the first control signal output terminal of the pulse width modulation generator. The emitter of the second triode is connected to the ground terminal.

[0023] In an alternative embodiment, both the first triode and the second triode are NPN - type triodes.

[0024] In an alternative embodiment, the first control sub - circuit includes a third triode and several resistors, and the second control sub - circuit includes a fourth triode and several resistors.

[0025] The collector of the third triode, several resistors, and the control signal input terminal of the first power control sub - circuit are connected in series to the positive pole of the power supply. The base of the third triode is connected to the first control signal output terminal of the pulse width modulation generator. The emitter of the third triode is connected to the ground terminal.

[0026] The collector of the fourth triode, several resistors, and the control signal input terminal of the second power control sub - circuit are connected in series to the positive pole of the power supply. The base of the fourth triode is connected to the second control signal output terminal of the pulse width modulation generator. The emitter of the fourth triode is connected to the ground terminal.

[0027] In an alternative embodiment, both the third triode and the fourth triode are NPN - type triodes.

[0028] In an alternative embodiment, the first power control sub - circuit includes a first PMOS transistor, and the second power control sub - circuit includes a second PMOS transistor. Wherein

[0029] The gate of the first PMOS transistor is the control signal input terminal of the first power control sub-circuit, the drain of the first PMOS transistor is the output terminal of the first power control sub-circuit, and the source of the first PMOS transistor is the input terminal of the first power control sub-circuit;

[0030] The gate of the second PMOS transistor is the control signal input terminal of the second power control sub-circuit, the drain of the second PMOS transistor is the output terminal of the second power control sub-circuit, and the source of the second PMOS transistor is the input terminal of the second power control sub-circuit.

[0031] In an alternative embodiment, the first ground control sub-circuit includes a first NMOS transistor, and the second ground control sub-circuit includes a second NMOS transistor; wherein

[0032] The gate of the first NMOS transistor is the control signal input terminal of the first ground control sub-circuit, the drain of the first NMOS transistor is the input terminal of the first ground control sub-circuit, and the source of the first NMOS transistor is the output terminal of the first ground control sub-circuit;

[0033] The gate of the second NMOS transistor is the control signal input terminal of the second ground control sub-circuit, the drain of the second NMOS transistor is the input terminal of the second ground control sub-circuit, and the source of the second NMOS transistor is the output terminal of the second ground control sub-circuit.

[0034] In summary, the present application includes at least the following beneficial technical effects:

[0035] 1. Through the collaborative work of the control circuit and the pulse width modulation generator, users can freely adjust the color temperature and brightness of the light strip according to their needs, achieving diverse lighting effects and meeting the requirements of different scenarios and atmospheres.

[0036] 2. By adjusting the duty cycle, fine control of the light output can be achieved, improving the flexibility and adjustability of the lighting system.

[0037] 3. Automatically adjust the lighting effect of the light strip according to the preset schedule, making the control process more automated and eliminating the need for manual intervention.

[0038] 4. Through the collaborative work of the control circuit and the pulse width modulation generator, replacing the main control integrated circuit, thereby reducing the manufacturing cost of the two-wire two-color light strip control device. Description of the Drawings

[0039] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 is a schematic structural diagram of a dual - line and dual - color light strip control device provided by an embodiment of the present application;

[0041] Figure 2 is a schematic structural diagram of a set of first control signals and second control signals generated by a pulse - width modulation generator provided by an embodiment of the present application;

[0042] Figure 3 is a schematic structural diagram of a dual - line and dual - color light strip control circuit provided by an embodiment of the present application.

[0043] Explanation of the reference numerals in the drawings

[0044] 1. First control sub - circuit; 2. Second control sub - circuit; 3. First power - supply control sub - circuit; 4. Second power - supply control sub - circuit; 5. First ground - connection control sub - circuit; 6. Second ground - connection control sub - circuit; 7. First connection end; 8. Second connection end; 9. First logic - judgment sub - circuit; 10. Second logic - judgment sub - circuit. Detailed implementation manners

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0046] As Figure 1 shown, it is a schematic structural diagram of a dual - line and dual - color light strip control device provided by an embodiment of the present application.

[0047] The dual - line and dual - color light strip control device includes, but is not limited to, a dual - line and dual - color light strip, a control circuit, a pulse - width modulation (PWM) generator, and a timer module. The control circuit is arranged between the dual - line and dual - color light strip and the power supply. The control - signal input end of the control circuit is connected to the PWM generator, and the timer module is connected to the signal - receiving end of the PWM generator.

[0048] Among them, the double-line double-color light strip adopts a double-line structure design. Each light strip is composed of several light-emitting diodes of the same color connected in series. The two light strips adopt a parallel structure, and different light strips are driven by currents in opposite directions to emit two different colors of light.

[0049] The PWM generator generates a first control signal (hereinafter collectively referred to as PWM-C) and a second control signal (hereinafter collectively referred to as PWM-W) with different duty cycles and transmits them to the control circuit connected to the double-line double-color light strip, so that the control circuit adjusts the on-off of the internal circuit according to PWM-C and PWM-W to achieve the control and adjustment of the double-line double-color light strip. Among them, when PWM-C is a high-level signal and PWM-W is a low-level signal, one of the light strips in the double-line double-color light strip is lit; when PWM-C is a low-level signal and PWM-W is a high-level signal, the other light strip in the double-line double-color light strip is lit. Therefore, as Figure 2 shown, when the PWM generator is working normally, PWM-C and PWM-W cannot be high-level signals at the same time.

[0050] The timer module connected to the PWM generator generates a preset trigger signal at preset time intervals and transmits it to the PWM generator, so as to control the PWM generator to generate corresponding PWM-C and PWM-W. Further, the timer module can interact with the user in various ways such as physical buttons, touch screens or remote APPs, so as to allow the user to input or select the required time interval, so as to control the frequency of the trigger signal generated by the timer module.

[0051] As Figure 3 shown, it is a schematic structural diagram of a control circuit for a double-line double-color light strip provided by an embodiment of the present application.

[0052] The control circuit for the double-line double-color light strip provided in this embodiment is the Figure 1 control circuit in, so hereinafter the control of electric power will be used to refer to the control circuit for the double-line double-color light strip in this embodiment. The control circuit includes but is not limited to a first control sub-circuit 1, a second control sub-circuit 2, a first power supply control sub-circuit 3, a second power supply control sub-circuit 4, a first ground control sub-circuit 5, a second ground control sub-circuit 6, and a first connection end 7 and a second connection end 8 arranged on both sides of the double-line double-color light strip.

[0053] The output terminal of the first control sub-circuit 1 is connected to the control signal input terminal of the first power supply control sub-circuit 3, and the output terminal of the second control sub-circuit 2 is connected to the control signal input terminal of the second power supply control sub-circuit 4. The input terminals of the first power supply control sub-circuit 3 and the second power supply control sub-circuit 4 are connected to the positive pole of the power supply. The input terminal of the first ground control sub-circuit 5 and the first connection terminal 7 on one side of the control circuit are connected in parallel to the output terminal of the first power supply control sub-circuit 3, and the input terminal of the second ground control sub-circuit 6 and the second connection terminal 8 on the other side of the control circuit are connected in parallel to the output terminal of the second power supply control sub-circuit 4. The output terminals of the first ground control sub-circuit 5 and the second ground control sub-circuit 6 are connected to the ground terminal. The control signal input terminal of the first control sub-circuit 1 and the control signal input terminal of the second ground control sub-circuit 6 are connected to the PWM-C output terminal of the PWM generator. The control signal input terminal of the second control sub-circuit 2 and the control signal input terminal of the first ground control sub-circuit 5 are connected to the PWM-W output terminal of the PWM generator.

[0054] To avoid the PWM-C and PWM-W being high-level signals simultaneously, the control circuit further includes a first logic judgment sub-circuit 9 and a second logic judgment sub-circuit 10. Among them, the input terminal of the first logic judgment sub-circuit 9 is connected to the control signal input terminal of the first control sub-circuit 1, the control signal input terminal of the first logic judgment sub-circuit 9 is connected to the PWM-W output terminal of the PWM generator, and the output terminal of the first logic judgment sub-circuit 9 is connected to the ground terminal. The input terminal of the second logic judgment sub-circuit is connected to the control signal input terminal of the second control sub-circuit 2, the control signal input terminal of the second logic judgment sub-circuit is connected to the PWM-C output terminal of the PWM generator, and the output terminal of the second logic judgment sub-circuit is connected to the ground terminal.

[0055] Both the first logic judgment sub-circuit 9 and the second logic judgment sub-circuit adopt NPN-type triodes. Among them, the collector of the first triode in the first logic judgment sub-circuit 9 is the input terminal of the first logic judgment sub-circuit 9, the base of the first triode is the control signal input terminal of the input terminal of the first logic judgment sub-circuit 9, and the emitter of the first triode in the first logic judgment sub-circuit 9 is the output terminal of the first logic judgment sub-circuit 9. It should be understood that except for the signals connected to the control signal input terminals being different, the components used in the circuit and the circuit layout of the above first logic judgment sub-circuit 9 and the second logic judgment sub-circuit are the same. Through the detailed description of the first logic judgment sub-circuit 9 above, those skilled in the art can clearly know the second logic judgment sub-circuit. For the sake of simplicity of the specification, it will not be elaborated here.

[0056] The first control sub-circuit 1 includes, but is not limited to, a third NPN-type triode and several resistors, and the second control sub-circuit 2 includes, but is not limited to, a fourth NPN-type triode and several resistors. Among them, the base of the third triode is connected in series with a voltage-dividing resistor and then connected to the PWM-C output terminal of the PWM generator. The collector of the third triode, the control signal input terminal of the first power supply control sub-circuit 3, and the voltage-dividing resistor are connected in series in turn and then connected to the positive pole of the power supply. The emitter of the third triode is the output terminal of the first control sub-circuit 1 (i.e., connected to the ground terminal). It should be understood that, except for the different signals connected to the control signal input terminals, the components used in the circuit and the circuit layout of the above-mentioned first control sub-circuit 1 and the second control sub-circuit 2 are the same. Through the above detailed description of the first control sub-circuit 1, those skilled in the art can clearly know the second control sub-circuit 2. For the sake of simplicity of the specification, it will not be described in detail here.

[0057] The first power supply control sub-circuit 3 includes a first PMOS transistor, and the second power supply control sub-circuit 4 includes a second PMOS transistor. Among them, the gate of the first PMOS transistor is the control signal input terminal of the first power supply control sub-circuit 3, the drain of the first PMOS transistor is the output terminal of the first power supply control sub-circuit 3, and the source of the first PMOS transistor is the input terminal of the first power supply control sub-circuit 3. It should be understood that, except for the different signals connected to the control signal input terminals, the components used in the circuit and the circuit layout of the above-mentioned first power supply control sub-circuit 3 and the second power supply control sub-circuit 4 are the same. Through the above detailed description of the first power supply control sub-circuit 3, those skilled in the art can clearly know the second power supply control sub-circuit 4. For the sake of simplicity of the specification, it will not be described in detail here.

[0058] The first ground control sub-circuit 5 includes a first NMOS transistor, and the second ground control sub-circuit 6 includes a second NMOS transistor. Among them, the gate of the first NMOS transistor is the control signal input terminal of the first ground control sub-circuit 5, the drain of the first NMOS transistor is the input terminal of the first ground control sub-circuit 5, and the source of the first NMOS transistor is the output terminal of the first ground control sub-circuit 5. The drain of the first NMOS transistor is connected in series with the first connection terminal 7 and then connected to the output terminal of the first power supply control sub-circuit 3. It should be understood that, except for the different signals connected to the control signal input terminals, the components used in the circuit and the circuit layout of the above-mentioned first ground control sub-circuit 5 and the second ground control sub-circuit 6 are the same. Through the above detailed description of the first ground control sub-circuit 5, those skilled in the art can clearly know the second ground control sub-circuit 6. For the sake of simplicity of the specification, it will not be described in detail here.

[0059] Its working principle is as follows:

[0060] When the PWM-C signal is a preset high-level signal and the PWM-W signal is a preset low-level signal, the collector and emitter of the first triode are turned off, and the collector and emitter of the third triode are turned on, thereby generating a low-level signal and transmitting it to the control signal input terminal of the first PMOS transistor to turn on between the drain and source of the first PMOS transistor. The first NMOS transistor receives the low-level signal to turn off between the drain and source. At the same time, the collector and emitter of the second triode are turned off, and the collector and emitter of the fourth triode are turned off, thereby generating a high-level signal and transmitting it to the control signal input terminal of the second PMOS transistor to turn off between the drain and source of the second PMOS transistor. The second NMOS transistor receives the high-level signal to turn on between the drain and source. The current input from the positive power supply flows through the first PMOS transistor into the first connection terminal, thereby being transmitted to the dual-line dual-color light strip through the first connection terminal, and then the current is transmitted to the ground terminal through the second NMOS transistor connected to the second connection terminal.

[0061] When the PWM-C signal is a preset low-level signal and the PWM-W signal is a preset high-level signal, the collector and emitter of the first triode are turned off, and the collector and emitter of the third triode are turned off, thereby generating a high-level signal and transmitting it to the control signal input terminal of the first PMOS transistor to turn off between the drain and source of the first PMOS transistor. The first NMOS transistor receives the high-level signal to turn on between the drain and source. At the same time, the collector and emitter of the second triode are turned off, and the collector and emitter of the fourth triode are turned on, thereby generating a low-level signal and transmitting it to the control signal input terminal of the second PMOS transistor to turn on between the drain and source of the first PMOS transistor. The second NMOS transistor receives the low-level signal to turn off between the drain and source. The current input from the positive power supply flows through the second PMOS transistor into the second connection terminal, thereby being transmitted to the dual-line dual-color light strip through the second connection terminal, and then the current is transmitted to the ground terminal through the first NMOS transistor connected to the first connection terminal.

[0062] When both the PWM-C signal and the PWM-W signal are preset high-level signals, the collector and emitter of the first triode and the collector and emitter of the second triode are both turned on so that the PWM-C signal and the PWM-W signal flow into the ground terminal through the first triode and the second triode, thereby turning off the collector and emitter of the third triode and the collector and emitter of the fourth triode, and further turning off between the drain and source of the first PMOS transistor, the second PMOS transistor, the first NMOS transistor, and the second NMOS transistor, and the power supply cannot output current to the dual-line dual-color light strip.

[0063] When both the PWM-C signal and the PWM-W signal are preset low-level signals, the collector-emitter junctions of the first transistor and the second transistor are both turned off. At the same time, the drain-source junctions of the first PMOS transistor, the second PMOS transistor, the first NMOS transistor, and the second NMOS transistor are all turned off, and the power supply cannot output current to the dual-color double-strand light strip.

[0064] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0065] The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical units. They can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0066] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A two-line two-color light strip control device, characterized in that: The control device comprises: Two-line two-color light strip; A control circuit disposed between the two-wire two-color light strip and a power source, and configured to adjust the color temperature and brightness of the two-wire two-color light strip according to a control signal; A pulse width modulation generator connected to the control circuit, used to output a first control signal and a second control signal to the control circuit, so that the control circuit adjusts the on and off of the internal sub-circuit according to the first control signal and the second control signal; A timer module connected to the pulse width modulation generator is used to output a trigger signal to the pulse width modulation generator according to a preset time interval, so that the pulse width modulation generator outputs a control signal.

2. A two-wire two-color light strip control circuit, applied to the two-wire two-color light strip control device described in claim 1, characterized in that: The control circuit includes: a first control subcircuit, a second control subcircuit, a first power control subcircuit, a second power control subcircuit, a first grounding control subcircuit, a second grounding control subcircuit, and a first connection end and a second connection end arranged on both sides of the double-line two-color light strip; The output end of the first control subcircuit is connected to the control signal input end of the first power control subcircuit, and the output end of the second control subcircuit is connected to the control signal input end of the second power control subcircuit; The input end of the first power control subcircuit and the input end of the second power control subcircuit are connected to the positive pole of the power supply; The input end of the first grounding control subcircuit and the first connection end on one side of the control circuit are connected in parallel to the output end of the first power control subcircuit, and the input end of the second grounding control subcircuit and the second connection end on the other side of the control circuit are connected in parallel to the output end of the second power control subcircuit; The output terminal of the first grounding control subcircuit and the output terminal of the second grounding control subcircuit are connected to the ground terminal; The control signal input terminal of the first control subcircuit and the control signal input terminal of the second ground control subcircuit are connected to the first control signal output terminal of the pulse width modulation generator; The control signal input terminal of the second control subcircuit and the control signal input terminal of the first ground control subcircuit are connected to the second control signal output terminal of the pulse width modulation generator.

3. The two-wire two-color light strip control circuit according to claim 2, characterized in that: The control circuit further comprises a first logic judgment subcircuit connected to a control signal input terminal of the first control subcircuit, and a second logic judgment subcircuit connected to a control signal input terminal of the second control subcircuit; The input terminal of the first logic judgment subcircuit is connected to the control signal input terminal of the first control subcircuit, the control signal input terminal of the first logic judgment subcircuit is connected to the second control signal output terminal of the pulse width modulation generator, and the output terminal of the first logic judgment subcircuit is connected to the ground terminal; The input end of the second logic judgment subcircuit is connected to the control signal input end of the second control subcircuit, the control signal input end of the second logic judgment subcircuit is connected to the first control signal output end of the pulse width modulation generator, and the output end of the second logic judgment subcircuit is connected to the ground end.

4. The two-wire two-color light strip control circuit according to claim 3, characterized in that: The first logic judgment subcircuit includes a first triode, and the second logic judgment subcircuit includes a second triode; The collector of the first transistor is connected to the control signal input terminal of the first control subcircuit, the base of the first transistor is connected to the second control signal output terminal of the pulse width modulation generator, and the emitter of the first transistor is connected to the ground terminal; The collector of the second transistor is connected to the control signal input terminal of the second control subcircuit, the base of the second transistor is connected to the first control signal output terminal of the pulse width modulation generator, and the emitter of the second transistor is connected to the ground terminal.

5. The two-wire two-color light strip control circuit according to claim 4, characterized in that: The first transistor and the second transistor are both NPN transistors.

6. The two-wire two-color light strip control circuit according to claim 2, characterized in that: The first control subcircuit includes a third transistor and a plurality of resistors, and the second control subcircuit includes a fourth transistor and a plurality of resistors; The collector of the third triode, a plurality of resistors and the control signal input terminal of the first power control subcircuit are connected in series to the positive electrode of the power supply, the base of the third triode is connected to the first control signal output terminal of the pulse width modulation generator, and the emitter of the third triode is connected to the ground terminal; The collector of the fourth transistor, a plurality of resistors and the control signal input terminal of the second power control subcircuit are connected in series to the positive electrode of the power supply, the base of the fourth transistor is connected to the second control signal output terminal of the pulse width modulation generator, and the emitter of the fourth transistor is connected to the ground terminal.

7. The two-wire two-color light strip control circuit according to claim 6, characterized in that: The third transistor and the fourth transistor are both NPN transistors.

8. The two-wire two-color light strip control circuit according to claim 2, characterized in that: The first power control subcircuit includes a first PMOS transistor, and the second power control subcircuit includes a second PMOS transistor; wherein The gate of the first PMOS tube is the control signal input terminal of the first power control sub-circuit, the drain of the first PMOS tube is the output terminal of the first power control sub-circuit, and the source of the first PMOS tube is the input terminal of the first power control sub-circuit; The gate of the second PMOS tube is the control signal input terminal of the second power control sub-circuit, the drain of the second PMOS tube is the output terminal of the second power control sub-circuit, and the source of the second PMOS tube is the input terminal of the second power control sub-circuit.

9. The two-wire two-color light strip control circuit according to claim 2, characterized in that: The first grounding control subcircuit includes a first NMOS transistor, and the second grounding control subcircuit includes a second NMOS transistor; in The gate of the first NMOS transistor is the control signal input terminal of the first grounding control subcircuit, the drain of the first NMOS transistor is the input terminal of the first grounding control subcircuit, and the source of the first NMOS transistor is the output terminal of the first grounding control subcircuit; The gate of the second NMOS tube is the control signal input terminal of the second grounding control subcircuit, the drain of the second NMOS tube is the input terminal of the second grounding control subcircuit, and the source of the second NMOS tube is the output terminal of the second grounding control subcircuit.

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