USB touch light based on SGL8022W
The LED driver uses SY7200. 4 strings of 12V current limit 100ma. Boosted in series, the efficiency is higher and the heat generation is smaller. LED light colors can be matched in any way.
LED uses ceramic filament 26mm 3V 100ma specifications
use:
Connect the power supply, touch the tail with your finger and the light will slowly light up to 90% brightness, touch it again and slowly turn off.
Touch the tail when it is off. When it lights up to the required brightness, touch it again to save the brightness setting and turn it off. Touch it again to turn it on and it will gradually brighten to the set value.
When it is on, touch and hold it without letting go. It will gradually lighten or darken to the brightest and darkest point. During this period, let go when the required brightness is reached and the corresponding brightness will be saved.
The saved brightness becomes invalid after a power outage and needs to be reset.
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