How to distinguish the four leads at the outlet of fluorescent lamp electronic ballast, and whether there is any requirement. Whether there is a reverse connection,

The four output wires of the electronic ballast for fluorescent lamps are divided into two groups, two wires with the same color or marked with 1-2 and 3-4 are a group, and the two wires in each group are respectively connected to one side of the lamp tube, as shown in the following figure.

Electronic ballast is a kind of ballast which can convert power frequency AC power supply into high frequency AC power supply to drive electric light source and make it in luminous state. The increasingly mature electronic ballast is gradually replacing the traditional inductive rectifier because of its advantages of energy saving and elimination of tube stroboscopic.