We classify light bulb by the technology it uses to provide artificial light. as a result of grouping lamps square measure solely associate sweetening of incandescent technology we tend to don’t classify them as their own lamp family. Instead we tend to decision them a sub-category of incandescent light-weight bulb family.
Electrical current flows from the socket and makes contact with the base of the light bulb. Just like with incandescent light bulbs, the electrical current enters the socket and travels up to the tungsten filament, heating up the filament to incandescence. The enhancement with halogen lamps is that the filament is enclosed in a quartz capsule filled with halogen gas. This gas is inert and made up of iodine and bromine.
The flow of electrical current starts the “halogen cycle,” where the particles burning off the tungsten filament are then redeposited back onto the filament by the halogen inside the quartz capsule, allowing for these particles to be “reused.” Reusing the particles gives the lamp a higher luminous efficacy and a longer life than incandescent lamps. So halogens can last up to 2,500 hours while incandescents have an average life of 800-1,200 hours.