The application's features of sintered electrodes for arc discharge lamp lighting

Because in Russia the share of arc discharge lighting lamps of high pressure over half of all sources of outdoor lighting, improvement of this type of lamps on ways to increase their longevity and to reduce negative impacts on the environment is an important task.

The application of sintered electrodes in the tubes is one way of increasing the longevity of the lamp while reducing its cost, since they have several features not found in commercially used spiral electrodes deposited on their surface lamellae of the emission-active substance. One of the advantages of sintered electrode is increased by 5-10 times the amount of active substance, its volume location, high emission capability and lower operating temperature.

Due to the application of a new type of electrodes was established type of DRL lamps with improved reliability. However, when you try to use one-stage quartz decreased quality of the bulbs. In this paper we studied the dependence of the emission properties of material used sintered electrodes on the quality of the applied silica glass.

The mechanism of gas-discharge lamp lighting was as follows: lamp included in the network voltage in series with the ballast resistor, and when applying voltage to the electrodes under the influence of high-voltage pulse or without a breakdown occurs the discharge gap of the burner and the development of its arc in the working composition. The arc discharge to generate radiation in the optical spectrum: the ultraviolet, visible and infrared, which is used for lighting objects or for technical purposes.

The results showed that the use of sintered electrodes with the optimum content of barium tungstate, calcium and barium aluminate Ba2CaWO6 BaAl2O4 possible to produce lamps with long life at 20,000 hours, the burners are made of quartz glass containing hydroxyl groups from 3 to 5 ppm.