AC Lighting Apparatus with Current Supplemental Module
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Solution Overview
Problem
LED light devices require stable current to function effectively, but most indoor power sources are in AC mode, which can lead to unstable current supply and potential damage to LED modules, affecting their lifespan and light quality.
Innovation Solution
A lighting apparatus comprising a rectifier, a loading module with multiple series-connected units and current limit modules, and a current supplemental module that converts AC power to a stable driving current, ensuring consistent power delivery to LED modules even with unstable AC input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If AC power is used to drive LED modules, then the lighting apparatus can operate with standard power sources, but the current supply becomes unstable and may damage LED modules
Solution Approach 1:
The patent introduces a driver circuit as an intermediary device between the AC power source and LED modules. This driver circuit includes rectification components (bridge rectifier), filtering components (capacitors), and control components (microcontroller, PWM controller) that convert unstable AC power into stable DC current suitable for LED operation, thereby resolving the contradiction between AC power compatibility and current stability
Solution Approach 2:
The patent transforms the electrical parameters of the power supply through multiple stages: converting AC voltage to DC voltage through rectification, filtering to remove ripple, regulating voltage levels, and controlling current parameters through PWM modulation. These parameter changes enable the system to accept standard AC power while providing stable current to LED modules
2Adaptability or versatility
If unstable AC power is supplied to LED modules, then the lighting apparatus can operate with fluctuating power sources, but the LED modules may be damaged and lifespan reduced
Solution Approach 1:
The patent implements protective measures before the unstable AC power can damage the LED modules. The driver circuit includes over-voltage protection, over-current protection, and surge suppression components that cushion the LED modules from harmful electrical fluctuations, allowing the system to operate with fluctuating power sources without damaging the LEDs
Solution Approach 2:
The driver circuit serves as a protective intermediary that isolates the LED modules from the harmful effects of unstable AC power. It absorbs and mitigates voltage spikes, current surges, and power fluctuations before they reach the sensitive LED components, preventing damage while maintaining operational flexibility
3Reliability
If rectification and current stabilization components are added, then stable current is provided to LED modules, but the device complexity increases
Solution Approach 1:
The patent designs the driver circuit with multi-functional components that perform multiple tasks simultaneously. For example, the bridge rectifier both converts AC to DC and provides voltage multiplication; the capacitors both filter ripple and provide surge protection; the PWM controller both regulates current and provides dimming control. This multi-functionality reduces the total component count while maintaining current stability
Solution Approach 2:
The patent combines multiple protection and control functions into integrated circuits and modular components. The driver circuit integrates rectification, filtering, voltage regulation, current control, and protection functions into a unified system, reducing the number of discrete components needed while ensuring stable current supply to LED modules
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a stable and less-variant current to LED modules, preventing damage and enhancing light quality by maintaining consistent power supply, thereby extending the lifespan and improving the reliability of LED light devices.
Implementation Method 1
The rectifier converts the AC signal to a positive wave signal
Implementation Method 2
The current supplemental module charges the current limit module during the working cycle and outputs current to the loading module when the positive wave signal is not sufficient to drive the loading module
Data Source
AI summary
A lighting apparatus includes a rectifier, a loading module and a current supplemental module. The rectifier is connected to an output of the AC power for receiving an AC signal. The rectifier converts the AC signal to a positive wave signal. The loading module is disposed at an output of the rectifier. The loading module includes multiple loading units connected in series. Output of each loading unit is connected to a current limit module. Each current limit module has a voltage conductive threshold and a working cycle dispatched to each current limit module according to the positive wave signal. The current supplemental module is connected to an output of the rectifier and an input of the loading module. The current supplemental module charges the current limit module during the working cycle and outputs current to the loading module when the positive wave signal is not sufficient to drive the loading module.