How many volts does the led diode lamp
The power of LED light emitting diodes is related to the design of current and voltage circuits, as well as the selection of driving power sources. The current of a single LED chip is constant at 20MA, so the single chip in red, yellow, and orange colors is between 1.8-2.3V, while the other colors are between 2.8-3.6V
So, how many volts does it take for a specific LED to light up? We can refer to the voltage range of LED beads to choose a suitable driving power supply, and we will list it as white led diode lamp
0.06W, voltage 2.6-3.5V, current 20MA
0.5W, voltage 2.65-3.77V, current 150MA
1W, voltage 2.79-3.90V, current 350MA
3W, voltage is 3.05-4.5V, current is 700MA
5W, voltage 2.65-3.77V, current 150MA
Although white light-emitting diodes are one of the many colors in LED beads, we can see the approximate range of light-emitting diodes
Next, let's take a look at the voltage of the six conventional colors
White LED diode 2.8-3.4V
Red LED diode 1.8-2.4V
Blue LED diode 2.8-3.4V
Yellow LED diode 1.8-2.4V
Emerald green LED diode 2.8-3.4V
Yellow and orange LED diodes 1.8-2.4V
In addition to the above six types, there are also white high-voltage lamp beads available at 6V, 9V, and 36V, but their use is very special, such as some products on high-voltage lamp strips
led diode lamp,emitting diodes ,LED
There are many welding methods for LED lamp beads on the chip, and the following is one of the commonly used methods for reference. First, use an electric soldering iron to heat some soldering tin on the positive and negative electrode pads of the lamp bead (the soldering tin must not be too much, otherwise, the positive and negative electrode pads will be connected once heated with a hot-air gun), then use a hot-air gun to heat the positive and negative electrode pads at the same time, after the tin melts, use tweezers to place the positive and negative electrodes of the lamp bead on the corresponding pad.
LED is the light emitting diode, which is a semiconductor solid light emitting device that converts electric energy into light energy. Its core is the PN junction. In addition to the forward conduction, reverse cut-off and breakdown characteristics of the general PN junction, it also has the light emitting characteristics under certain conditions. Its structure mainly includes the following parts: lead, bracket, encapsulation glue, bonding wire, LED chip, solid crystal glue and phosphor. The discoloration failure of LED lamp bead is closely related to its material, structure, packaging process and service conditions. The following will analyze the causes of its discoloration through specific cases.
LED lamp beads are also called light emitting diodes. It has a wide range of applications. Its luminous colors include red light, emerald green light, yellow green light, yellow light, purple light, blue light, white light and orange light. The above is monochromatic light. It can also be made into two or three colors.
The gold wire used to package LED lamp beads contains more than 99.99% gold. It is produced by drawing gold from this material. In addition to 99.99% gold, this gold also contains less than 1% other trace elements. One of the core components of LED lamp bead packaging is gold wire, which is the bridge connecting the luminous chip and the welding point, and plays a decisive role in the service life of LED lamp bead. So how to identify the purity of gold thread?