The development effect of such SMD LED is really good, but the reason for the power consumption of such a voltage is because the circuit board is wide or high, so it is.
Everyone has a life experience where newly purchased LED lights are always particularly bright, but after a period of time, many lights become darker and darker. Why does LED lighting have such a process? To understand why.
The cause of light decay in LED is significant. In general, light decay is also a cause of occurrence, as traditional light sources may cause it during operation.
Everyone knows that LED light emitting diodes are made of semiconductor materials, which are generally arsenic simplified, PN junction (OD), and nitride.
Many people have heard of LED, but many people do not know its advantages, the editor tells you.
We often encounter various problems when using LED, such as voltage, chromaticity, brightness, response time, color anomalies, and so on. Today, the editor will introduce the parameters of LED to everyone.
As is well known, LED are composed of III-IV compounds, such as GaAs (silicon arsenide) and GaP (phosphide).
LED lighting fixtures are the mainstream form of lighting in the industry. LED, as an emerging high-tech lighting source, has significant advantages such as energy conservation, high efficiency, long lifespan, safety and environmental protection. However, traditional LED light sources are not available, and LED light sources must use LED lighting fixtures to function properly
Why does the reverse breakdown voltage test of LED indicate that the pin is positive and the reverse breakdown voltage is 175? LED lamps in the SMD series need to be fully installed. The primary indicator for testing this type of test: The purpose of the forward resistor test is to limit the current to work under the forward current. The voltage value after the test is about 3V, and the LED lamps of the SMD series need to be fully installed. When measuring, not only does it have a forward voltage of 10%, but also its forward voltage drop.
With the development of the times and the improvement of people's living standards, LED has gradually been applied in the field of lighting today, and many households have used LED lamps. It can be said that LED, as a new type of green light source, has the characteristics of environmental protection, long lifespan, small size, and is widely favored by people. So what is an LED green light source?
LED (Light Emitting Diode) is a solid-state semiconductor device that can convert electrical energy into visible light, which can directly convert electricity into light. The heart of an LED is a semiconductor chip, one end of which is attached to a bracket, one end is the negative electrode, and the other end is connected to the positive electrode of the power supply, making the entire chip encapsulated in epoxy resin.
A semiconductor chip consists of two parts, one is a P-type semiconductor in which holes dominate, and the other is an N-type semiconductor in which electrons dominate. But when these two semiconductors are connected, a P-N junction is formed between them. When an electric current passes through a wire and acts on this chip, electrons are pushed towards the P region, where they recombine with holes and emit energy in the form of photons. This is the principle of LED light emission.