RGB variable light power supply for T5 lamp tube

Abstract

The utility model discloses a kind of RGB variable photoelectric power for T5 fluorescent tube, including AC input terminal, rectifier filter circuit and constant-current drive circuit, the LED output circuit of constant-current drive circuit output end connection, still including the 5V voltage stabilizing output circuit of rectifier filter circuit output end connection, MCU control chip and AC input circuit with 5V voltage stabilizing output circuit connection;LED output circuit includes anode output terminal and several different color temperature monochrome output terminals;Monochrome output terminal is all fixed with MOS control tube;Different pin of MCU control chip is connected with several monochrome output terminals and AC input circuit respectively.The utility model is reasonably structured, can be quickly adjusted according to the need control luminaire color temperature condition, improves the convenience and effectiveness of control, also can change control logic according to the need, through MOS control tube can realize high-power LED luminaire, improves the scope of application.

Description

Technical Field

[0001] This utility model belongs to the field of T5 lamp power supply technology, specifically relating to an RGB variable light power supply for T5 lamps. Background Technology

[0002] LED lamps are a common type of lighting appliance. To ensure the effectiveness of LED lamps, they generally have corresponding driver power supplies. Existing driver power supplies use a fixed dedicated chip to detect the AC switch of the lamp and directly control one of the multiple outputs to adjust and control the color temperature of the T5 lamp tube. While this can meet general usage needs, it cannot arbitrarily change the number of control channels, which affects the effectiveness of control. Also, due to the limitations of the chip, the LED control logic cannot be changed, thus affecting the lighting effect. Furthermore, because the chip's output current is limited, it can only control low-power LED lamps, thus limiting its applicability. Utility Model Content

[0003] The purpose of this invention is to provide an RGB variable light power supply for T5 lamp tubes that has a reasonable structure and is stable and reliable in use.

[0004] The technical solution to achieve the purpose of this utility model is an RGB variable light power supply for T5 lamp tubes, including an AC input terminal, a rectifier and filter circuit connected to the AC input terminal and a constant current drive circuit connected to the rectifier and filter circuit, an LED output circuit connected to the output terminal of the constant current drive circuit, and a 5V regulated output circuit connected to the output terminal of the rectifier and filter circuit, an MCU control chip connected to the 5V regulated output circuit and an AC input circuit.

[0005] The LED output circuit includes a positive output terminal and several monochrome output terminals with different color temperatures;

[0006] Each monochrome output terminal is equipped with a MOS control transistor.

[0007] The different pins of the MCU control chip are connected to several monochrome output terminals and AC input circuits, respectively.

[0008] A further preferred embodiment is that the monochrome output terminal is connected to the drain of the MOS control transistor and the source of the MOS control transistor is grounded, and the pins of the MCU control chip are connected to the gate of the MOS control transistor.

[0009] A further preferred embodiment is that the monochrome output terminal includes a red light output terminal, a green light output terminal, a white light output terminal, and a blue light output terminal;

[0010] The gate of the MOS control transistor on the red light output terminal is connected to the P1 pin of the MCU control chip;

[0011] The gate of the MOS control transistor on the green light output terminal is connected to the P2 pin of the MCU control chip;

[0012] The gate of the MOS control transistor on the white light output terminal is connected to the P4 pin of the MCU control chip;

[0013] The gate of the MOS control transistor on the blue light output terminal is connected to the P3 pin of the MCU control chip.

[0014] A further preferred embodiment is that the AC input circuit includes a twenty-first resistor, a ninth capacitor, a fourth Zener diode, a twenty-fifth resistor, a sixth MOSFET, a twenty-second resistor, a twentyth resistor, and an eleventh capacitor;

[0015] The ninth capacitor, the fourth Zener diode, and the twenty-fifth resistor are connected in parallel between the source and gate of the sixth MOSFET.

[0016] The 21st resistor and the 22nd resistor are connected in series. The end of the 22nd resistor is connected to the gate of the 6th MOS transistor, and the end of the 21st resistor is connected to the output of the rectifier filter circuit.

[0017] The drain of the sixth MOS transistor is connected to the output terminal of the 5V regulated output circuit through the twentieth resistor. The pin of the MCU control chip is connected to the drain of the sixth MOS transistor, and the twelfth capacitor is connected between the source and drain of the sixth MOS transistor.

[0018] A further preferred embodiment is that the MCU control chip is an MS8501 chip.

[0019] A further preferred embodiment is that the main chip of the 5V regulated output circuit is a BP8501 constant voltage driver chip.

[0020] This utility model has positive effects: its structure is reasonably designed, and through the MCU control chip and AC input circuit in conjunction with the monochrome output terminal with MOS control tube, the color temperature of the lamp can be quickly adjusted as needed, improving the convenience and effectiveness of control. Furthermore, the control logic can be changed as needed to improve the effectiveness of control. At the same time, the MOS control tube can realize high-power LED lamps, expanding the scope of application and making it highly applicable. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the specific circuit of this utility model.

[0023] Figure reference numerals: 1. AC input terminal, 2. rectifier and filter circuit, 3. constant current drive circuit, 4. LED output circuit, 5V regulated output circuit, 5. MCU control chip, 6. AC input circuit, 7. MOS control transistor, 8. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] See Figure 1 As shown, an RGB variable light power supply for T5 lamp tubes includes an AC input terminal 1, a rectifier and filter circuit 2 connected to the AC input terminal, a constant current drive circuit 3 connected to the rectifier and filter circuit, an LED output circuit 4 connected to the output terminal of the constant current drive circuit, a 5V regulated output circuit 5 connected to the output terminal of the rectifier and filter circuit, an MCU control chip 6 connected to the 5V regulated output circuit, and an AC input circuit 7. In this embodiment, the AC input terminal is connected to the mains power supply. The rectifier and filter circuit and the constant current drive circuit are conventional circuits in the prior art, so they are not described in detail. The 5V regulated output circuit is a conventional structure in the prior art, and it is simply applied.

[0027] Furthermore, the LED output circuit includes a positive output terminal LED+ and several monochrome output terminals with different color temperatures; each monochrome output terminal is equipped with a MOS control transistor 8; during connection, different pins of the MCU control chip are connected to the monochrome output terminals and the AC input circuit respectively. Through this structure, the color temperature output control of the lamp can be achieved through different pins of the MCU control chip, making adjustment more convenient. Moreover, the LED control logic can be changed through the MCU control chip to meet the needs of different applications. Additionally, the inclusion of MOS control transistors facilitates the control of higher-power LED lamps, expanding its applicability.

[0028] Furthermore, in this embodiment, during connection, the monochrome output terminal is connected to the drain of the MOS control transistor and the source of the MOS control transistor is grounded, and the pin of the MCU control chip is connected to the gate of the MOS control transistor.

[0029] In this embodiment, the monochrome output terminals include a red light output terminal, a green light output terminal, a white light output terminal, and a blue light output terminal; the gate of the MOS control transistor on the red light output terminal is connected to the P1 pin of the MCU control chip; the gate of the MOS control transistor on the green light output terminal is connected to the P2 pin of the MCU control chip; the gate of the MOS control transistor on the white light output terminal is connected to the P4 pin of the MCU control chip; and the gate of the MOS control transistor on the blue light output terminal is connected to the P3 pin of the MCU control chip.

[0030] In practical applications, the AC input circuit includes a 21st resistor R21, a 9th capacitor C9, a 4th Zener diode D4, a 25th resistor R25, a 6th MOSFET Q6, a 22nd resistor R22, a 20th resistor R20, and an 11th capacitor C11. The 9th capacitor C9, the 4th Zener diode D4, and the 25th resistor R25 are connected in parallel between the source and gate of the 6th MOSFET Q6. The 21st resistor R21 and the 22nd resistor R22 are connected in series, with the end of the 22nd resistor R22 connected to the gate of the 6th MOSFET Q5, and the end of the 21st resistor R21 connected to the output of the rectifier filter circuit 2. The drain of the 6th MOSFET Q6 is connected to the output of the 5V regulated output circuit 5 through the 20th resistor R20. The pins of the MCU control chip 6 are connected to the drain of the 6th MOSFET Q6, and the 12th capacitor C12 is connected between the source and drain of the 6th MOSFET Q6. The MCU control chip is an MS8501 chip. The main chip of the 5V regulated output circuit is the BP8501 constant voltage driver chip.

[0031] This utility model has positive effects: its structure is reasonably designed, and through the MCU control chip and AC input circuit in conjunction with the monochrome output terminal with MOS control tube, the color temperature of the lamp can be quickly adjusted as needed, improving the convenience and effectiveness of control. Furthermore, the control logic can be changed as needed to improve the effectiveness of control. At the same time, the MOS control tube can realize high-power LED lamps, expanding the scope of application and making it highly applicable.

[0032] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural parts described in the instruction manual can also be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0033] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, these obvious variations or modifications derived from the essential spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. An RGB variable light power supply for T5 lamp tubes, comprising an AC input terminal, a rectifier and filter circuit connected to the AC input terminal, and a constant current drive circuit connected to the rectifier and filter circuit, wherein an LED output circuit is connected to the output terminal of the constant current drive circuit, characterized in that: It also includes a 5V regulated output circuit connected to the output terminal of the rectifier and filter circuit, an MCU control chip and an AC input circuit connected to the 5V regulated output circuit; The LED output circuit includes a positive output terminal and several monochrome output terminals with different color temperatures; Each monochrome output terminal is equipped with a MOS control transistor. The different pins of the MCU control chip are connected to several monochrome output terminals and AC input circuits, respectively.

2. The RGB variable light power supply for T5 lamp tubes according to claim 1, characterized in that: The monochrome output terminal is connected to the drain of the MOS control transistor, and the source of the MOS control transistor is grounded. The pins of the MCU control chip are connected to the gate of the MOS control transistor.

3. The RGB variable light power supply for T5 lamp tubes according to claim 2, characterized in that: The monochrome output terminals include red light output terminals, green light output terminals, white light output terminals, and blue light output terminals; The gate of the MOS control transistor on the red light output terminal is connected to the P1 pin of the MCU control chip; The gate of the MOS control transistor on the green light output terminal is connected to the P2 pin of the MCU control chip; The gate of the MOS control transistor on the white light output terminal is connected to the P4 pin of the MCU control chip; The gate of the MOS control transistor on the blue light output terminal is connected to the P3 pin of the MCU control chip.

4. The RGB variable light power supply for T5 lamp tubes according to claim 1, characterized in that: The AC input circuit includes a 21st resistor, a 9th capacitor, a 4th Zener diode, a 25th resistor, a 6th MOSFET, a 22nd resistor, a 20th resistor, and an 11th capacitor. The ninth capacitor, the fourth Zener diode, and the twenty-fifth resistor are connected in parallel between the source and gate of the sixth MOSFET. The 21st resistor and the 22nd resistor are connected in series. The end of the 22nd resistor is connected to the gate of the 6th MOS transistor, and the end of the 21st resistor is connected to the output of the rectifier filter circuit. The drain of the sixth MOS transistor is connected to the output terminal of the 5V regulated output circuit through the twentieth resistor. The pin of the MCU control chip is connected to the drain of the sixth MOS transistor, and the twelfth capacitor is connected between the source and drain of the sixth MOS transistor.

5. The RGB variable light power supply for T5 lamp tubes according to claim 1, characterized in that: The MCU control chip is an MS8501 chip.

6. The RGB variable light power supply for T5 lamp tubes according to claim 1, characterized in that: The main chip of the 5V regulated output circuit is the BP8501 constant voltage driver chip.

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