Despite the fact that the "ancient" Ilyich bulbs were replaced by more economical ones - diodes and other analogues, incandescent bulbs still remain popular and in demand among modern consumers. These products have both pros and cons. One of the most sought after are incandescent lamps of 200 watts. Why this happens, try to understand this article.
What is a light bulb?
Most of the internal structure of a 200 W incandescent lamp can be seen through its transparent bulb. The main components of the device are electrodes, feeding a thread stretched between them of refractory tungsten metal. To prevent the fragile tungsten filament from tearing during transportation of the device, it is supported by holders (supports) made of molybdenum. All electrodes and holders converge to the middle and to the base, where they are connected by a bimetallic wire and sealed into a glass frame that goes to the base.
Further we are not visible behind the cap of the base, but there is nothing interesting and magical there. The plus is output and powered with the middle soldering of the contact, the minus contacts with the circular rim of the cap, made in the form of a thread, so that the bulb can be screwed into the cartridge.
Operating principle
A 200 W incandescent bulb works like all appliances that are heated using incandescent light. They are irons, heaters, hair dryers, soldering irons and other devices. There, metals of a different composition are used for heating, with the necessary level of resistance. Tungsten has a very large resistance. It is it that does not give a sufficiently small thread when a voltage of 220 volts is applied to it to melt and collapse. It only heats up to such an extent that with the naked eye it is simply impossible to look at it for a long time. It is the luminescence of this incandescent white thread that emits light comparable to a huge number of lit candles.
The ups and downs with tungsten
But from chemistry lessons, we know that if the tungsten is heated to a temperature of 3000 degrees (this is the temperature of the thread in the working device), it will simply begin to oxidize, which will cause the thread to break. Therefore, in the inner cavity of a bulb of 200 W incandescent bulbs, as well as in similar products of other denominations, there is either absolutely no air (vacuum reigns), or it is replaced with an inert gas, whose molecules do not react with tungsten when heated.
Pros of a Bulb
The most obvious advantages of such light generating devices are:
- very low cost;
- ability to function normally at any temperature differences and atmospheric humidity;
- the ability of such an electric bulb to emit heat, which is also important in some circumstances;
- ability to withstand minor power surges;
- at violation of integrity do not emit hazardous gases into the atmosphere;
- Do not require special disposal measures.
Cons of incandescent bulbs
They are there too. And the main disadvantages of 200 W incandescent lamps are:
- Comparative fragility, since the warranty service life of such devices is limited to 1000 hours at 220V and 2500 hours at 127V.
- A fragile flask that is damaged at the slightest impact on any solid object.
- Significantly greater energy consumption compared to energy-saving counterparts.
Conclusion
There are incandescent lamps with a cap E14 and E27. Also, the products differ in power. The most popular models are 60, 100, 150 and 200 watts. What to buy, an E27 incandescent lamp with 60 watts for 20 rubles with a resource of 1000 hours, or its diode analogue, the cost of which exceeds 2000 rubles, but with a resource of 40,000 hours? The choice, again, is yours!