LED Driver Circuit Color Temperature Adjustment
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Solution Overview
Problem
Existing LED dimming circuits can only achieve monochrome brightness adjustment and fail to adjust color temperature, with color temperature adjustment in LED lamps typically requiring expensive microcontroller technology.
Innovation Solution
A circuit design incorporating silicon controlled dimming, rectifier, AC constant current power supply, and balanced architecture LED modules with color feedback comparison modules, allowing for color temperature adjustment without the need for expensive microcontrollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If microcontroller technology is used to adjust color temperature, then color temperature adjustment capability is improved, but cost increases
Solution Approach 1:
The patent extracts the color temperature adjustment function from the microcontroller and implements it through dedicated analog circuitry (resistors, capacitors, transistors) within the LED driver module. This separates the lighting control function from the microcontroller, enabling color temperature adjustment without requiring expensive microcontroller resources.
Solution Approach 2:
The patent replaces expensive microcontroller-based control with inexpensive passive electronic components (resistors, capacitors, transistors) that can be easily manufactured and integrated into the LED driver. These simple components achieve the same color temperature adjustment function at a fraction of the cost.
2Illumination intensity
If linear constant current drive circuit is used, then brightness adjustment is achieved, but color temperature adjustment capability is lost
Solution Approach 1:
The patent designs the LED driver module to perform multiple functions: it maintains linear constant current drive for brightness adjustment while simultaneously providing color temperature adjustment through an integrated analog control circuit. The driver module universally handles both brightness and color temperature control without requiring separate systems.
Solution Approach 2:
The patent segments the control functions by dedicating specific circuit components to specific tasks: the constant current circuit handles brightness control while a separate analog control circuit with resistors, capacitors, and transistors handles color temperature adjustment. This functional segmentation allows independent optimization of each control aspect.
3Device complexity
If simple dimming circuit is used, then circuit complexity is reduced, but color temperature adjustment function is lost
Solution Approach 1:
The patent implements a self-service control mechanism where the LED driver module automatically adjusts color temperature based on ambient light conditions detected by a photosensor. The analog circuitry autonomously regulates the mix of warm and cool LED channels without requiring complex processing or user intervention, achieving intelligent adaptation with simple hardware.
Data Source
AI summary
The invention discloses a circuit of dimming and toning based on a driver on board module, relates to LED driving circuit technology field, which includes a silicon controlled dimming circuit module, a rectifier module, an AC constant current power supply module, a plurality of balanced architecture LED modules, and a color feedback comparison module. The AC constant current power supply module includes a plurality of AC constant current power supply sub units supplying power for the balanced architecture LED modules correspondingly. The color feedback comparison module is located between two balanced architecture LED modules to compare voltages generated thereby and no power contrast feedback between two balanced architecture LED modules is generated when the silicon controlled dimming circuit module adjusts current, so that the color feedback comparison module makes an LED bead thereof to choose road between the balanced architecture LED modules to realize colour temperature adjusting.