Why do bulbs burn out?
There are several main varietieslight bulbs for fixtures. Each of them works on its own special system and has a number of pros and cons. In this case, all the bulbs sooner or later burn out.
We will explain why this happens.
Incandescent lamps
We can say that this is a classic type of light bulbs, which for a very long time did not have serious competitors in the market.
Their power can vary from 15 to 300 watts,and the shape can acquire either more rounded, or more acute, oblong forms. The main principle of incandescent lamps is that the electric current passes through a thin thread (usually made of tungsten), providing a characteristic glow in the glass cavity of the bulb. In order to exclude the oxidation of the body of incandescence by air, the cavity of the bulb is made either completely free of oxygen (a vacuum bulb) or filled with inert gases (for more powerful lamps), in particular, krypton, argon.
Among the advantages of incandescent lamps:
- ease of operation,
- cheapness,
- a familiar light that is pleasant to the eye.
Among the cons:
- low luminous efficiency,
- high heat transfer,
- fragility (not more than 1 thousand hours, but can be much less).
Among the reasons why light bulbs burn out quicklyincandescent, we can distinguish the low quality of such lamps, the instability of models to increased voltage in the power grid and its differences. Thus, a voltage increase of only 1% can shorten the lifespan of an incandescent lamp by as much as 14%. Overestimated indices provoke superheating of the tungsten filament, the atoms of which begin to become intensely thinner. As a result, after a short time (usually during the next turn on the lamp, that is, at the moment of peak voltage supply to the heating element), the paw will burn.
Halogen lamps
This species is an improvedthe shape of incandescent lamps. The structure of the product also presents a tungsten filament, which now has heat-resistant properties, as well as a bulb filled with an inert gas.
Due to the reinforced heating element,capable of withstanding high temperatures, power, and accordingly, the light output of halogen bulbs is almost 100% higher than that of standard incandescent lamps.
In addition, among the pros of this type of lighting elements can be identified:
- Their compactness (thanks to which the lamps are built in furniture, suspended ceilings);
- Wide opportunities in the transmission of light and color (there are lamps that give more diffuse light, there are spotlights, there are lamps emitting a beautiful toned light);
- Great durability (5-12 thousand hours of work).
However, there are also disadvantages:
- Lamps even more strongly overheat, and therefore their use requires compliance with fire safety.
- Bulb bulbs are very sensitive - an awkward touch can cause it to burst.
The main reason why light bulbs with halogen often burn out are voltage drops. That's why such products must be used through voltage regulators.
Fluorescent Lamps
These lamps operate on the basis of ultraviolet radiation from a gas discharge. The light formed by such products, it turns out pleasantly scattered.
Among the advantages of the products:
- Not bad power, which varies from 8 to 80 W;
- Luminous flux, which in comparison with all the same incandescent lamps is 7-8 times greater;
- Greater economy of electricity consumption;
- Great durability (10-15 thousand hours).
As for the minuses, this, in particular, is the tendency of the lamps to flicker strongly in the event of contact failure or some other technical reasons.
The reason why light bulbs of this type burn out are all the same voltage drops, as well as poor quality of products, failure of the starting armature.
LED lamp
One of the best lighting elements, characterized by environmental friendliness. The structure of these types of lamps is based on the LED and power converter.
The advantages of products include:
- Low power consumption;
- High durability (from 30 to 50 thousand operating hours);
- With a similar light output, the heat transfer from LED lamps is considerably less than that of incandescent lamps;
- Compactness;
- Complete safety due to the absence of dangerous substances and materials in the structure.
The most significant drawback of these models -this is their high cost. In addition, some scientists tend to negatively assess the effect of light emitted by light on the retina of the human eye.
The reason why the bulbs burn out inchandelier, it is often a breakdown of the transformer, which is responsible for reducing the voltage received by the lamp, since the LEDs are designed for a voltage of only 12 V.
For information on how to choose the correct lighting element, see What lamps are better. In the Electrics section you will find other interesting articles on this topic.
