#Projector christmas light series#

LED lights have also allowed the use of laser projectors in holiday light décor.

They also come in a variety of shapes and styles. An LED bulb may last 50,000-200,000 hours while the incandescent bulb will burn for 3,000 hours.Īn added benefit is that these lights are often programmable, allowing users to change the color of the lights and select different blinking modes. For instance, 10 strings of incandescent mini-lights would burn 408 watts, but the same strings of LED lights would only burn 4 watts. Capitol and Rockefeller Center had been lit using only LED lights.Įven though they cost consumers more upfront, LED lights use 80 percent less energy and last much longer than traditional incandescent lights. The first LED Christmas lights were sold in 1998, and by the early 21st century, Christmas trees at both the U.S. When an LED bulb fails, it typically short-circuits, so the rest of the string can work even in the absence of a shunt.

#Projector christmas light series#

LEDs are wired in a parallel series like incandescents, but they don't use shunts. The result is the visible light we see in an LED. When an electron and an electron hole collide, a small amount of energy is released as a photon. On the positive side, particles called “electron holes” move toward the negative side. When current is applied to the system, electrons from the negative side move toward the positive side. A diode consists of something called a p-n junction - two semiconductor materials next to each other, one with a positive charge (p) and one with a negative charge (n).