BdEF8LgXP3

LED dim light eliminater

 
Overview
This solution differs from those connected to the LED constant current driver input.
Solutions at the LED constant current driver input (relay-controlled switches, neutral-live wire swapping, etc.) are typically used to address the dim lighting in ordinary lamps caused by the wall switch controlling the neutral wire, leaving the live wire still energized when the lamp is turned off. These solutions are ineffective against the dim lighting caused by induced current in smart lamps.
This solution addresses the induced current generated between the lamp casing and the wall when smart and remote-controlled lamps are turned off via remote control or app (while the driver's wireless component remains active). This induced current forms a loop between the LED driver's leakage current and the wall, causing the LED to emit a dim light.
The core of this solution lies in the MOSFET controlled by the voltage divider circuit, which disconnects the neutral wire loop after the LED is turned off, preventing the dim lighting caused by induced current.
The provided BOM is compatible with most smart LEDs on the market. The LED driver output range is 50V-150V and it will work normally. Adjustments can be made to the components in the voltage divider circuit. Single-sided and double-sided designs are available; the components are the same, only the size and layout differ. I don't know how to draw schematics, but as long as you understand the diagram, it's fine; it's not a complex circuit.
Demonstration and explanation video: https://www.bilibili.com/video/BV1NQxieNEr7/
参考设计图片
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Update:2026-03-28 04:35:25
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