The full name of LED is semiconductor light-emitting diode. It is made of semiconductor materials to directly convert electrical energy into light energy. Long (normal lighting 80,000 to 100,000 hours), cold light source and other advantages, is the real "green lighting". The lighting products with LED as the new light source will inevitably replace the white woven lamp and become another revolution of human lighting in the future of the 21st century. LED lamp beads use a low-voltage power supply, the power supply voltage is between 2-4V, depending on the product, so it is a safer power supply than using a high-voltage power supply, especially suitable for public places.
The principle of colorful LED lamp beads is: it is composed of red (R), green (G), and blue (B) three primary color LEDs. Two-color LEDs are very familiar to us. Generally composed of red LEDs and green LEDs. It can be Emit red light or green light separately. If red light and green light are bright at the same time; red and green light are mixed into orange-yellow. The color change principle of the color-changing lamp is that it can emit yellow when two LEDs are lit by three primary color LEDs. , Purple, and cyan (such as red and blue LEDs emit purple light when they are lit) if the red, green, and blue LEDs are lit at the same time, it will produce white light. If there is a circuit to make the red, green and blue LEDs two and two respectively Light up, light up individually and light up the three primary color LEDs at the same time, then he can emit seven different colors of light, so this phenomenon of colorful LED lights appears.
