Electronic ballast can be divided into 4 series of 15 varieties:
1, one drag, ordinary type and light box type of special electronic ballast divided into 20W, 30W, 40W a total of 6 varieties
2, a drag two, ordinary and light box type of special electronic ballast divided into 2 x 20W, 2 x 30W, 2 x 40W A total of 6 varieties
3, ring lamp with electronic ballast divided into 22W, 32W, 40W a total of 3 varieties
4, Quartz germicidal lamp ballast applicable to 35-60w a total of 1 varieties Note: 20W, 40W is for T10, T12 Tubes said, 18W, 36W is for the T8 lamp. So sometimes we talk about 20W, can also be understood as 18W, at the same time T8 tube 36W We can also understand as T10, T12 40W, because their ballast is universal.