Universal Dimmer Circuit Voltage Adaptation and Thermal Protection
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Solution Overview
Problem
Current dimmer circuits and cabinet assemblies are typically designed for specific voltage ranges, requiring multiple versions and increasing the risk of incorrect product delivery, as they do not operate effectively across a wide range of input voltages.
Innovation Solution
A lighting control system with a universal dimmer circuit and load control module that includes features like reverse phase cut mode dimming, forward phase cut mode dimming, hybrid phase cut mode dimming, transition time control, over current protection, and thermal protection, capable of operating across a wide range of input voltages, and housed in a cabinet with multiple modules and thermal protection features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dimmer circuits are designed for specific voltage ranges, then they can operate reliably at designated voltages, but multiple versions must be produced and stocked increasing device complexity and risk of incorrect delivery
Solution Approach 1:
The patent implements a universal dimmer circuit design that can operate across multiple voltage ranges (120V, 277V, 347V) by incorporating voltage detection circuitry that automatically configures the circuit parameters based on the detected input voltage. This eliminates the need for multiple voltage-specific versions while maintaining reliable operation at each designated voltage level.
Solution Approach 2:
The dimmer circuit dynamically adjusts its operating parameters based on the detected input voltage level. The circuit includes voltage detection mechanisms that trigger parameter changes in the power processing components, allowing the same hardware to adapt its electrical characteristics to match different voltage inputs without requiring physical reconfiguration or multiple versions.
2Temperature
If thermal protection features are added to the cabinet, then thermal management is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The cabinet incorporates thermal protection features that automatically monitor and respond to temperature conditions without requiring external control systems. Temperature sensors detect heat buildup and trigger protective actions such as activating cooling fans or alerting operators, allowing the system to self-manage thermal conditions while minimizing added complexity.
Solution Approach 2:
The patent introduces thermal management as an intermediary system between the heat-generating dimmer circuits and the cabinet environment. Thermal protection features act as mediators that monitor temperature conditions and intervene when necessary to prevent overheating, thereby protecting the primary functional components without requiring fundamental redesign of the cabinet structure.
Data Source
AI summary
A universal load control module may include a power supply that operates over a wide voltage range, a microcontroller, and one or more functional control blocks. A functional control block may include a dimmer circuit for controlling a lighting load that provides reverse phase cut mode dimming, forward phase cut mode dimming, and hybrid phase cut mode dimming, as well as thermal protection. One or more universal control modules may be housed in a cabinet that include a cabinet control module. The cabinet may include additional thermal protection measures.