MICROCONTROLLER-BASED MULTIFUNCTIONAL ELECTRONIC SWITCH AND LIGHTING APPARATUS HAVING THE SAME

摘要

A method of a light color temperature switching control for an LED lamp includes using a first LED lighting load emitting a low color temperature light and a second LED lighting load emitting a high color temperature light, using a light diffuser covering the first LED lighting load and the second LED lighting load to create an effect of a mingled color temperature for the LED lamp, using a power switching circuitry to execute a power allocation algorithm to manage electric powers respectively delivered to the first LED lighting load and the second LED lighting load while keeping a total electric power delivered unchanged to control a diffused light with desired color temperatures. A light intensity of the LED lamp is also adjustable by keeping a ratio of electric power allocation between the first LED lighting load and the second LED lighting load without shifting the mingled color temperature.