How is dimmable technology for lamps realized?

Generally it is brightness dimmable. If you want to adjust the color temperature can also be achieved. For example, a lamp inside a warm white lamp board a positive white lamp, to ensure that the warm white is always bright, the brightness of the white can be adjusted from 0 to 100. as long as the regulation of the brightness of the white lamp beads, we have achieved the effect of changing the color temperature of the entire lamp.