A lamp is such a simple thing to have around the house.But there are tricks everywhere: in order for your purchase to bring you only benefits and serve you for a long time, it is important to approach the choice wisely. How exactly - we will tell you today Symbols Articles on the topic The flux on the packaging is designated as lm (lumen). For example, a standard 60-watt incandescent lamp is about 660 lm, and 100 watts is 1,140 lm. The power of the lamp is measured in watts (W) and indicates how much electricity it consumes. Units of measurement for are the ratio of luminous flux to power, which usually averages 80-100 lm / W. Color rendering index - Ra. It shows how the light from the lamp conveys the shades of objects in the room. The ideal value for this indicator is 100 Ra. The angle of the luminous flux is measured in degrees and is important for spotlights. To illuminate a specific object, choose a lamp with a small angle, and for an entire room - with a wide angle, about 120 degrees. Voltage is indicated by the letter V (volts) and shows the level of sensitivity of the lamp to voltage drops. For LED lamps, it ranges from 100 to 240 V. Light temperature is measured in Kelvin (K) and shows what color light comes from the lamp - warm or cold. The lower its value, the warmer the light will be, and the higher, the colder. The approximate range is from 2,700 K to 7,500 K.
Types of bases First in popularity— screw base E27, 27 mm in diameter. In second place is the screw base E14, its diameter is 14 mm. The GU 5.3 base is found in both 220V and 12V lamps, most often in halogen, spotlight, or LED lamps. The GU 10 base is usually found in halogen mirror or LED lamps with a voltage of 220V. The GX53 base is suitable for GX lamps — flat and large, and also for lighting suspended ceilings. Related articles
Heat dissipation in LED lamps It is present inany LED lamp and is a radiator, which is necessary because such lamps are destructive to their own heat. A high-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 quality of the lamp, the larger the radiator and the lamp itself, so when choosing a lamp based on the principle of "small but unnoticeable", be prepared for the fact that it will not serve you for long.
Pulsation in LED lamps If onThe packaging says that the pulsation coefficient is 0%, which is very good: in high-quality LED lamps, pulsation should be minimal. The fact is that it can negatively affect vision, cause fatigue, headaches, and generally have a negative impact on health. It is difficult to notice pulsation with the naked eye, so be sure to check this indicator before buying. There is also a simple, “folk” way to assess pulsation - point your smartphone camera at it. If you see moving stripes, you have a cheap and low-quality lamp in front of you. Related articles
How to choose a lamp: important information and tips
