Various lighting equipment is the integral and important element of life. To choose the best option, it is necessary to have idea of various bulbs.
Some the most widespread glow lamps which belong to heat sources of light are their. The operation principle of these bulbs is based on heating by electric current of spiral up to the temperature of 3000 degrees. In flasks there are inert gases - argon, krypton. These bulbs do not depend on ambient temperature, are lit instantly. They have low cost, differ simple design and reliability. Main lack of these bulbs: not too big life cycle - about 1000 hours. The serviceability of glow lamps is checked visually or normal tester. They can have only 2 faults: the fused spiral or lack of contact in electric wiring when tension does not move on socle. Luminescent bulbs are widely applied to lighting of rooms in production and in life. They treat gas discharge lamps of low pressure and can have power to 200 W. For operation of luminescent devices of lighting special devices - the pusko-regulating devices are required (or throttles). There are normal and electronic throttles. Lighting devices with the electronic pusko-regulating device are lit better, do not flicker, do not rustle during the work and save electrical energy. Compact luminescent devices of lighting with tubes of special form (so-called energy saving bulbs) can replace glow lamps - they are rolled in threaded cartridge directly or via the special adapter. They have the long term of operation and low power consumption. Life cycle of fluorescent lamps - till 10,000 o'clock (foreign production) and up to 5,000 - 8,000 (domestic productions). It is convenient to apply them to rooms which need to be lit during large number of hours. Main lack of these lamps: at temperature below 5 degrees they are hard lit and burn not really brightly. Malfunctions of luminescent lamps: violation of electric contact in the scheme and/or failure of one of elements. Contacts are checked visually and by means of tester. Faulty elements of lamp or throttle come to light by consecutive replacement all of them on obviously serviceable. The halogen lamps having strong brightness began to be used according to premises now – kitchens, bathrooms, etc. These lamps give light shade light very similar to day. Shortcomings of halogen lamps: the short term of operation, too glaring light giving sharp shadows. When choosing sources of lighting it is necessary to remember that the room cannot be lit with different types of lamps as it is harmful to sight.