  Fluorescent lamps utilize a variety of bases for connecting the lamp bulb to the fixture. Rapid Start and Preheat lamps typically use a bipin base. The medium bipin is available for T-12, T-10, and T-8 lamps. A miniature bipin base is available for smaller lamps.
Miniature Bipin Base
Single pin and recessed double contact bases are used in Slimline lamps, ranging from the T-8 to the T-12, and even T-17 lamps.
Bases
Compact fluorescent lamps use a special two-pin base designed to fit into a small ballast outlet.
Some compact fluorescent lamps, with an integral ballast, use medium screw bases identical to those used on incandescent lamps; they are often used as direct replacements for existing incandescent lamps
    
| 
