LED fluorescent tube installation sequence
How do fluorescent lamps work? In a fluorescent lamp circuit, current starts from the left prong of the plug, flows through the rectifier, one filament of the lamp, the closed switch in the starter, and the other filament in the lamp, and finally out the right prong of the plug . The current heats the two small elements of the fluorescent tube, and then the starter turns on to allow electricity to flow smoothly through the fluorescent tube.
A rectifier is a magnetic coil that regulates the current flowing through the lamp. When the starter is turned on, it sends an arc surge through the tube, and then after the tube has fired, the starter will keep the current flowing at the exact rate. In most fluorescent lamps, the starter is an automatic switch, when it detects that the tube is glowing, it will always be off, and the starter will shut off as long as the power to the lamp is disconnected.
Many fluorescent lamps contain multiple tubes to provide better lighting. These fluorescent lamps must be equipped with a separate rectifier and starter for each lamp. The light fixture may look like two tubes sharing a rectifier, but it may actually be two rectifiers built into a box. Likewise, fixtures with four tubes are equipped with four starters and four rectifiers. In some types of fixtures, the starters are built-in and cannot be replaced individually.
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