英语达人救命

A long-life lamp, including the possession of three, a filament, the filament a parallel set a short-circuit devices, referred to short-circuit devices for static metal contacts 4 and 2 double-metal contact of the dynamic short-circuit resistance. The invention of the beneficial effect: not only to meet the lamp in the commencement of preheating, but also in the lamp normal working hours, automatic removal of electronic ballasts flow through the filament preheating current while increasing as the launch of the Electronic Cathodic Area, reducing the temperature of the cathode filament, delaying filament evaporation splash on the electronic powder scattered, thus greatly extend the lamp life.