Can the LED point light input voltage DC be connected to AC?
First introduces the principle of rectifier bridge circuit, rectifier and LED and the combination of the principle of ACLED technology; then introduced the AC LED AC LED the basic circuit circuit and various power, such as 5W, 10W etc., also introduces the simulation for each circuit of the Multisim software, the simulation results consistent with the theory; finally, according to the front of the circuit design and simulation results, with the help of Altium Designer software to design PCB board and PCB board in the verification, circuit analysis, simulation of PCB circuit verification results and the results are basically the same. It is worth pointing out that the PCB board level circuit is not the only form of AC LED. According to the above idea, deeper integration can be carried out according to requirements, such as surface mount devices, and even direct integration with the core. AC LED technology is unique, novel and practical, and has many advantages. It is one of the trends of LED lighting technology development.
Although light-emitting diode (LED) has been put into operation for more than ten years, all the LED lamps on the market are DC (DC) LED products, so the AC/DC conversion must be carried out when the AC power supply. This not only increases the cost of LED lamps, but also causes waste of energy, and greatly reduces the service life of LED lamps. This paper discussed the current direct drive technology of LED (AC LED) to solve the above problems, the technology of using LED as a single conductive diode, can build a bridge rectifier circuit, bridge rectifier output AC power through DC, can directly drive LED. AC LED does not need to use the transformer and constant current source drive circuit, so it has the advantages of simple application and low cost. In addition, only half of the LED on the rectifier bridge is working, which can reduce the heat generation.
