AC Direct LED Control Circuit with Integrated Dimming and Protection
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Solution Overview
Problem
Existing LED lamp control circuits are costly due to the need for a driving module to convert AC to adaptive current and lack the ability to effectively adjust light output, limiting their functionality.
Innovation Solution
A control circuit directly coupled with an AC power grid, incorporating a protection unit, anti-interference unit, adjusting unit, auxiliary control unit, low-flicker control unit, ESD protection unit, and IC units, which allows for the adjustment of LED lamp luminance and reduces flicker frequency, thereby eliminating the need for a separate driving module and enhancing user control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving module is added to convert AC to adaptive current, then the LED lamp can function properly, but the manufacturing cost increases
Solution Approach 1:
The patent combines the control circuit and driving module functions into a single integrated control circuit that can directly accept AC input and control LED output, eliminating the need for separate driving module and reducing manufacturing cost
Solution Approach 2:
The control circuit is designed to perform multiple functions including AC rectification, current regulation, dimming control, and LED protection within a single device, making it universally applicable without requiring additional specialized components
2Ease of operation
If a control circuit is added to control LED lamp, then the LED lamp can be controlled, but the manufacturing cost increases
Solution Approach 1:
The control and driving functions are merged into a single integrated circuit that can be directly connected to AC power, eliminating the need for separate control and driving components and reducing overall manufacturing cost
3Ease of operation
If a conventional control circuit is used, then the LED lamp can be turned on or off, but the light adjustment capability is insufficient
Solution Approach 1:
The control circuit incorporates dynamic dimming control that allows continuous adjustment of LED luminance output, transitioning from static on/off control to dynamic multi-level brightness control for enhanced versatility
Data Source
AI summary
A control circuit of the present disclosure can directly coupled with AC power grid to control and adjust an LED lamp. The control circuit includes a protection unit, an anti-interference unit, an adjusting unit, an auxiliary control unit, a light emitting module, a low-flicker control unit, an ESD protection unit, an output unit and a plurality of IC unit. the adjusting unit adjusts and control a luminance of the light emitting module, the auxiliary control unit assistants to adjust the luminance of the light emitting module and increase a compatibility between the adjusting unit and the IC unit.