Control circuit of constant-voltage constant-power plug

Abstract

The utility model discloses a control circuit of constant voltage constant power plug, including input interface P1, rectifier bridge BD1, stabilivolt D2, polar capacitor C2, singlechip U1, output interface P2 and MOS transistor NOMOS-2, the output anode of rectifier bridge BD1 is connected with the first pin of singlechip U1 through resistor R2, the first pin of singlechip U1 is connected with the cathode of stabilivolt D2, and the output interface P2 is connected with the anode of stabilivolt D2. The positive electrode of the voltage-regulator tube D2 is grounded, the first pin of the single-chip microcomputer U1 is connected with the positive electrode of the polar capacitor C2, the fifth pin of the single-chip microcomputer U1 is connected with the G end of the MOS transistor NSMOS-2 through the resistor R3, and the D end of the MOS transistor NSMOS-2 is connected with the second pin of the output interface P2. The constant-voltage constant-power circuit is simple in structure, small in number of used electronic elements, low in production cost, capable of stably controlling the output current and the output voltage, and capable of achieving the constant-voltage constant-power effect.

Description

Technical Field

[0001] This utility model relates to the field of control circuit technology, specifically to a control circuit for a constant voltage and constant power plug. Background Technology

[0002] With the advancement of technology and the improvement of people's living standards, LED light strips have become commonplace decorative lighting fixtures. LED light strips require plugs for use, but most existing high-voltage LED light strip plugs cannot maintain constant voltage and power, easily causing the light strips to burn out and resulting in a poor user experience. Plugs that can maintain constant voltage and power use more electronic components, leading to higher production costs and hindering mass production and widespread adoption. Therefore, to avoid the shortcomings of existing technology, it is necessary to improve it. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a control circuit for a constant voltage and constant power plug with a simple structure and low production cost.

[0004] This utility model is achieved through the following technical solution:

[0005] A control circuit for a constant voltage and constant power plug includes an input interface P1, a rectifier bridge BD1, a Zener diode D2, a polarized capacitor C2, a microcontroller U1, an output interface P2, and a MOSFET NMOS-2. The positive output of the rectifier bridge BD1 is connected to the first pin of the output interface P2. The positive output of the rectifier bridge BD1 is connected to the first pin of the microcontroller U1 through a resistor R2. The first pin of the microcontroller U1 is connected to the negative terminal of the Zener diode D2, and the positive terminal of the Zener diode D2 is grounded. The first pin of the microcontroller U1 is connected to the positive terminal of the polarized capacitor C2, and the negative terminal of the polarized capacitor C2 is grounded. The fifth pin of the microcontroller U1 is connected to the gate (G) terminal of the MOSFET NMOS-2 through a resistor R3. The drain (D) terminal of the MOSFET NMOS-2 is connected to the second pin of the output interface P2. The source (S) terminal of the MOSFET NMOS-2 is grounded.

[0006] Furthermore, the gate terminal of the NMOS-2 MOSFET is grounded through resistor R6.

[0007] Furthermore, the first pin of the microcontroller U1 is grounded through resistor R4.

[0008] Furthermore, the second pin of the microcontroller U1 is connected to the first pin of the output interface P2 through resistor R1.

[0009] Furthermore, the second pin of the microcontroller U1 is grounded through resistor R5.

[0010] Furthermore, the second pin of the microcontroller U1 is grounded through capacitor C1.

[0011] Furthermore, the eighth pin of the microcontroller U1 is grounded.

[0012] Furthermore, the positive input terminal of the rectifier bridge BD1 is connected to the first pin of the input interface P1, and the negative input terminal of the rectifier bridge BD1 is connected to the second pin of the input interface P1.

[0013] Furthermore, the negative output terminal of the rectifier bridge BD1 is grounded.

[0014] Furthermore, the model number of the microcontroller U1 is LJ1022.

[0015] Compared to existing technologies, this utility model features a plug control circuit including an input interface P1, a rectifier bridge BD1, a Zener diode D2, a polarized capacitor C2, a microcontroller U1, an output interface P2, and a MOSFET NMOS-2. The rectifier bridge BD1, Zener diode D2, polarized capacitor C2, and microcontroller U1 stabilize the input current and input voltage, while the microcontroller U1 and MOSFET NMOS-2 stabilize the output current and output voltage, achieving a constant voltage and constant power effect. Furthermore, the plug has a simple structure, uses fewer electronic components, has low production costs, and is suitable for mass production and widespread adoption. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a circuit diagram of the control circuit for the constant voltage and constant power plug of this utility model. Detailed Implementation

[0018] 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.

[0019] like Figure 1The control circuit of the constant voltage and constant power plug of this utility model includes an input interface P1, a rectifier bridge BD1, a Zener diode D2, a polarized capacitor C2, a microcontroller U1, an output interface P2, and a MOSFET NMOS-2. The positive output of the rectifier bridge BD1 is connected to the first pin of the output interface P2. The positive output of the rectifier bridge BD1 is connected to the first pin of the microcontroller U1 through a resistor R2. The first pin of the microcontroller U1 is connected to the negative terminal of the Zener diode D2, and the positive terminal of the Zener diode D2 is grounded. The first pin of the microcontroller U1 is connected to the positive terminal of the polarized capacitor C2, and the negative terminal of the polarized capacitor C2 is grounded. The fifth pin of the microcontroller U1 is connected to the gate (G) terminal of the MOSFET NMOS-2 through a resistor R3. The drain (D) terminal of the MOSFET NMOS-2 is connected to the second pin of the output interface P2, and the source (S) terminal of the MOSFET NMOS-2 is grounded. The control circuit of the plug includes an input interface P1, a rectifier bridge BD1, a Zener diode D2, a polarized capacitor C2, a microcontroller U1, an output interface P2, and a MOSFET NMOS-2. The rectifier bridge BD1, Zener diode D2, polarized capacitor C2, and microcontroller U1 stabilize the input current and voltage, while microcontroller U1 and MOSFET NMOS-2 stabilize the output current and voltage, achieving constant voltage and constant power. Furthermore, the plug has a simple structure, uses fewer electronic components, and has low production costs, facilitating mass production and widespread adoption.

[0020] The gate terminal of the NMOS-2 MOSFET is grounded through resistor R6 to improve the stability and safety of the NMOS-2 MOSFET operation.

[0021] The first pin of the microcontroller U1 is grounded through resistor R4 to improve the stability and safety of the microcontroller U1's operation.

[0022] The second pin of the microcontroller U1 is connected to the first pin of the output interface P2 through resistor R1 to compensate the output power supply and improve the stability of the output voltage.

[0023] The second pin of the microcontroller U1 is grounded through resistor R5 to improve the stability and safety of the microcontroller U1's operation.

[0024] The second pin of the microcontroller U1 is grounded through capacitor C1 to improve the stability of the microcontroller U1's operation.

[0025] The eighth pin of the microcontroller U1 is grounded to improve the safety of the microcontroller U1 operation.

[0026] The positive input terminal of rectifier bridge BD1 is connected to the first pin of input interface P1, and the negative input terminal of rectifier bridge BD1 is connected to the second pin of input interface P1, which facilitates the input connection of rectifier bridge BD1.

[0027] The negative output terminal of rectifier bridge BD1 is grounded to ensure the safe operation of rectifier bridge BD1.

[0028] As a specific implementation method, the microcontroller U1 is model number LJ1022.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A control circuit for a constant voltage and constant power plug, characterized in that: The circuit includes an input interface P1, a rectifier bridge BD1, a Zener diode D2, a polarized capacitor C2, a microcontroller U1, an output interface P2, and a MOSFET NMOS-2. The positive output of the rectifier bridge BD1 is connected to the first pin of the output interface P2. The positive output of the rectifier bridge BD1 is connected to the first pin of the microcontroller U1 through a resistor R2. The first pin of the microcontroller U1 is connected to the negative terminal of the Zener diode D2, and the positive terminal of the Zener diode D2 is grounded. The first pin of the microcontroller U1 is connected to the positive terminal of the polarized capacitor C2, and the negative terminal of the polarized capacitor C2 is grounded. The fifth pin of the microcontroller U1 is connected to the gate (G) terminal of the MOSFET NMOS-2 through a resistor R3. The drain (D) terminal of the MOSFET NMOS-2 is connected to the second pin of the output interface P2. The source (S) terminal of the MOSFET NMOS-2 is grounded.

2. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The gate (G) terminal of the NMOS-2 MOSFET is grounded through resistor R6.

3. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The first pin of the microcontroller U1 is grounded through resistor R4.

4. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The second pin of the microcontroller U1 is connected to the first pin of the output interface P2 through resistor R1.

5. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The second pin of the microcontroller U1 is grounded through resistor R5.

6. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The second pin of the microcontroller U1 is grounded through capacitor C1.

7. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The eighth pin of the microcontroller U1 is grounded.

8. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The positive input terminal of the rectifier bridge BD1 is connected to the first pin of the input interface P1, and the negative input terminal of the rectifier bridge BD1 is connected to the second pin of the input interface P1.

9. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The negative output terminal of the rectifier bridge BD1 is grounded.

10. The control circuit for the constant voltage and constant power plug according to claim 1, characterized in that: The microcontroller U1 is model number LJ1022.

Images