How to detect the good and bad of the fluorescent lamp
If you measure the resistance at both ends, it's not bad
There is a small filament in each end of the normal daylight lamp, and the two feet on each side of the lamp are interlinked with the multimeter (only very small cold resistance). Working principle is: making after vacuum tubes when filling the silver (mercury), a small drop of water on the walls painted with fluorescent powder, the bulb is started, at the ends of the filament after heating, mercury evaporates into gas, gas is ionized conductive lines into loop, gas release a large number of ultraviolet (uv), at the same time by the ultraviolet radiation fluorescent powder from visible light. In addition, when after the lamp aging on both ends of the filament evaporation guide to black on both ends of the tube, the tube sometimes no broken cannot use the filament lamp to glow (so).
Normally, the filament on both ends is not broken is good.
The most basic and simple method is to test tubes per head of the poles, the poles are conduction description is good didn't burn out, there was a head of the poles impassability (no resistance) is burnt out.
