Dimming Lampholder with Frequency Modulation Circuit
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Solution Overview
Problem
Conventional dimming lampholders are not compatible with dimmable energy-saving fluorescent bulbs and dimmable LED bulbs, limiting their applicability and failing to meet user requirements for power-saving features.
Innovation Solution
A dimming lampholder design featuring a seat, cover body, cap, screwing ring, printed circuit board, and electrical connecting plates, with a switch and dimming circuit installed on the printed circuit board, allowing direct installation and dimming of dimmable energy-saving fluorescent bulbs and dimmable LED bulbs by adjusting the brightness through the knob.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dimming methods (changing voltage or resistance) are used, then incandescent bulbs can be dimmed, but fluorescent bulbs and LED bulbs cannot be used
Solution Approach 1:
The patent changes the dimming parameter from voltage/resistance (conventional method) to frequency modulation. The dimming circuit modulates the frequency of the driving signal to control bulb brightness, which is compatible with fluorescent and LED bulbs that require frequency-controlled dimming rather than direct voltage control.
Solution Approach 2:
The dimming circuit is designed to work universally with multiple bulb types (fluorescent and LED) by using a frequency modulation approach that can drive both bulb technologies. The circuit incorporates both a fluorescent bulb driving circuit and an LED driving circuit, allowing the same lampholder to support different bulb types through a unified control mechanism.
2Adaptability or versatility
If a unified dimming lampholder is designed for multiple bulb types, then adaptability improves, but the structural complexity increases
Solution Approach 1:
The dimming circuit is segmented into distinct functional modules: a fluorescent bulb driving circuit portion and an LED driving circuit portion. Each module is independently designed for its specific bulb type, allowing them to be integrated into a single lampholder without creating complex interdependencies. This modular segmentation simplifies the overall design by making each circuit portion independent and manageable.
Solution Approach 2:
The patent introduces a switching mechanism as an intermediary between the power source and the two different bulb types. The switching mechanism selectively connects either the fluorescent bulb driving circuit or the LED driving circuit to the power source, allowing unified control while maintaining electrical isolation between the two circuit types. This intermediary simplifies the integration by providing a clean interface between different bulb technologies.
Data Source
AI summary
A dimming lampholder includes a printed circuit board installed in the dimming lampholder, a switch and a dimming circuit installed in dimming lampholder and operated together with a dimmable energy-saving fluorescent bulb and a dimmable LED bulb. The dimmable energy-saving fluorescent bulb and the dimmable LED bulb may be installed and used directly to achieve the effect of adjusting the brightness of the emitting light.