LED lighting module common fault

First, the phenomenon: all the LEDs flash. Problem: Poor contact. Solution: Re-fix or plug in the loose area. Second, the phenomenon: LED dim. problem: 1. The LED polarity is reversed. 2. The LED is too long. 3. The switching power supply and the LED voltage label are inconsis

Basic knowledge of polarizer

Basic knowledge of polarizer The composition of the polarizer The earliest polarizer is mainly composed of a PVA film that can produce polarized light in the middle, and then a TAV protective film is compounded on both sides. In order to facilitate the use and obtain differen