Lighting

How to choose a lamp: important information and tips

The lamp is such a simple thing in the household. But everywhere there are tricks: that the purchase brought you only benefit and long served, it is important to approach the choice wisely. How exactly - tell us today Conventional notices Related articles the flow on the package is denoted as lm (lumen). For example, a standard 60 watt filament is about 660 lm, and 100 watts is 1 140 lm. The lamp power is measured in watts (W) and indicates how much it consumes electricity. The unit of measurement for is the ratio of the light flux and power, which usually averages 80-100 lm / W. The color rendering index is Ra. It shows how the light from the lamp transmits the shades of objects in the room. The ideal value for this indicator is 100 Ra. The light flux angle is measured in degrees and is important for soffit lamps. To illuminate a particular object, give preference to a lamp with a small angle, and for the whole room - with a wide angle, about 120 degrees. The voltage is indicated by the letter V (volts) and shows the sensitivity level of the lamp to voltage drops. For LED lamps, it ranges from 100 to 240 V. The light temperature is measured in kelvin (K) and shows what color the light comes from the lamp - warm or cold. The smaller the value, the warmer the light, and the more, the colder. The approximate range is from 2,700 K to 7,500 K. Varieties of socles First on popularity -screw cap E27, 27 mm in diameter. In the second place - the screw cap E14, its diameter - 14 mm. The base GU 5,3 is found both in lamps 220V and 12V, most often in halogen, soffit, or LED. The base is GU 10, it usually happens with halogen mirror or LED lamps with a voltage of 220V. The base of the GX53 is suitable for GX luminaires - flat and large, and also for lighting suspended ceilings. Related articles Heatsink in LED lamps He hasany LED lamp and is a radiator that is necessary, because for such lamps, their own heat is disastrous. A quality radiator consists of an alloy of aluminum, silver and copper and has ribs for a new heat sink - this is a guarantee that the lamp will last a long time. Unfortunately, the better the lamp, the more the radiator and it itself, so choosing a lamp on the principle of "small, but inconspicuous", prepare for the fact that it will not serve you for long. Pulsation in LED lamps If on the packagingit is written that the ripple factor is 0%, this is very good: in high-quality LED lamps, ripple should be minimal. The fact that it can adversely affect the eyesight, cause fatigue, headaches and generally have a negative impact on health. It is difficult to notice pulsation with an unaided eye, so be sure to check this figure before buying. There is also a simple, "folk" way to evaluate the pulsation - pointing at her camera smartphone. You will see moving strips - before you is a cheap and substandard lamp. Related articles

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