Multifunctional LED String Light Control Circuit for Stable Display Effects
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Solution Overview
Problem
Existing control circuits for LED string lights suffer from unstable control, preventing them from achieving a predetermined display effect, particularly in LED string lights with built-in ICs.
Innovation Solution
A multifunctional control circuit comprising a master control circuit with a single-chip microcomputer, a switch circuit, and a power supply circuit, where the single-chip microcomputer controls the output level of the switch circuit and power supply to stabilize the lighting of LED string lights through programmed control programs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional control circuit is used for LED string lights, then the basic control function is provided, but the control stability is poor and predetermined display effects cannot be achieved
Solution Approach 1:
The control circuit is designed with a single-chip microcomputer that can execute multiple control programs to achieve different display effects (chasing, fading, blinking, etc.). The circuit structure supports both LED string lights with and without built-in ICs, making it universally applicable while providing stable and versatile control functionality.
2Device complexity
If the control circuit hardware design is simplified, then the device complexity is reduced, but the control becomes unstable
Solution Approach 1:
The control circuit is divided into functional modules: power supply circuit, single-chip microcomputer control module, and switch circuit. This segmentation allows each module to be optimized independently while maintaining overall simplicity and stability. The power supply circuit separately powers the control chip and LED lights, and the switch circuit uses transistors for reliable on/off control.
3Reliability
If a single-chip microcomputer is introduced for programmed control, then control stability and display effects are improved, but the device complexity increases
Solution Approach 1:
The single-chip microcomputer is programmed with control programs that automatically execute predetermined display effects. Once programmed, the system operates autonomously without requiring complex external control mechanisms, achieving stable and versatile control while keeping the hardware structure relatively simple.
Data Source
AI summary
The present invention discloses a multifunctional control circuit for LED string lights, and belongs to the technical field of LED lighting control. The control circuit is entirely powered by a power supply circuit, wherein a switch circuit is controlled by a master control circuit; a single-chip microcomputer switches corresponding control programs whenever it is detected that a function switching button is turned on, output level of a corresponding output interface of the single-chip microcomputer is controlled according to a corresponding control program, so that on/off control of the switch circuit is achieved, and control waveforms in the master control circuit are transmitted to controlled LED string lights to achieve stable control of the LED string lights. The multifunctional control circuit for LED string lights has the advantages of being simple in structure, reasonable in design, and stable in control.