Octopus šilumos siurblys
The current that affects the LED becomes smaller, which causes the LED to dim. For voltage-driven LED lamps, the V of the LED current is the power source, VD is the on-voltage drop of the LED, and n is the number of LED connected in series. For a certain LED lamp, the voltage V is almost constant, and the voltage drop of the LED is also a fixed value, and the number of LEDs in series n is also a fixed value. This is basically the structure of LED Hyperlite LED High Bay Light – Black Hero Series.
http://www.cristalgran.com/productos/ventanas-y-puertas/
https://sweetandromanticlove.blogspot.com/2020/02/benefits-of-led.html