... Waterproof, Anti-dust, Shockproof3:The difference between the AC ballast and DC ballast:1.DC ballast has less 4 ... MOS tube than AC ballast.Then it has simplify part of control ... will decrease the electrode life span obviously.Using AC,the high speed plus ion attack the 2 ... is the electrode temperature has low temperature under AC.Because the cathode and anode exchage about 400 ...