A little about hid lamps: what is it

Modern models of cars are increasingly equipped with headlight on xenon (hid) lamps. Xenon lamps replaced widespread halogen. What are the differences between them? First of all, in principle of work. A thread of incandescent is installed inside the halogen lamp, it is a light source. The main disadvantage of such lamps in large electricity consumption and a small service life. Xenon lamps have no incandescent thread. Instead, two electrodes are used, through which a powerful electromylet is allowed. At the time of passing the electric pulse between the electrodes, xenon flares up. The lamps on xenon give bright white light, this is because the color temperature of the glow of xenon is 4300 degrees on the scale of Kelvin (in halogen no more than 30,000k). To obtain an electric bulbs, xenon lamps require a high power that cannot provide a car energy system. Such power can give special devices called ballasts. They convert the standard voltage of the on -board network to the desired value, without overloading the power system. Hid lamps more economically halogen. They consume only 35 watts. This despite the fact that they have a twice as strong. As for the service life, Ksenon has it within 3-4 thousand hours, against 500 hours for halogen. Of course, like any device, xenon lamps have their disadvantages. First of all, they are more expensive than halogen, they require the installation of additional equipment (ballasts) for their normal operation, which further increases the cost of the purchase. Another point, both headlights should be changed at the same time, so that there is no difference in brightness.