Why LED Lights Need to Use PCBs
LED lights have become a main force in lighting technology due to their energy-saving, high efficiency and long life characteristics. Although LED lights can be directly connected to a DC power source to emit light, such as connecting two ends of dry battery, why is it still necessary to use PCB in practical applications? 1. The Necessity of Power Conversion Household power is usually AC, while LED lights require DC to work. A key function of a PCB is to convert AC into DC. By integrating the rectifier circuit on the PCB, the LED lights can obtain a stable DC current from the AC power source. This not only ensures the normal lighting the LED l ight , but also accurately controls the voltage and current, protects the LED chip and extend its service life. 2. Realization of D iversified F unctions LED lights are not only used for lighting, but are also widely used in...