What is a dimmable LED lamp

In order to vary the intensity of light in the room it was coined by a dimmer switch, which is touted dimmer. But the thing. Such a device can not be combined with conventional LED lamps. And in order not to face the agonizing choice between saving and comfortable control and lighting were designed special dimmable LED lamps. In this article, let's look at these lamps closer.

Table of contents

Why conventional lamps can not be used with dimmer;

How does the dimmable LED lamp;

How to choose a quality lamp dimmable and its main characteristics;

Output.

Why conventional lamps can not be used with dimmer

Before proceeding to the description of dimmable lights, let's briefly learn the reason why conventional lamps do not work with dimmer.

In the conventional LED lamp structure is present micro-rectifier, which converts the incoming AC to 220 volts in constant. And in fact the lamp only two positions: it is on or off.

A dimmer task - it is a smooth change in light conditions. It turns out that if you screw the conventional diode lamp, and will make the regulation of a dimmer, you will first see the unpleasant flashing, and then a lamp turns on at full illumination. If we continue to operate in this mode, the dimmer and ordinary LED lamp, both of these elements very soon will break down.

The dimmable LED lamps there is an additional block, which is just intended to adjust.

How does the dimmable LED lamp

Note. Only if there is an inscription Dimmable (DIMM) or a special icon can understand that before you dimmable lamp. And on the outer parts do is simply impossible.

In such lamps installed a special driver with the function of the pulse width modulating. This driver is capable of adjustment in the range from 5% to 100% brightness. A principle concluded adjustment that changes the pulse duration, and the frequency and the amplitude remains unchanged.

In order to understand the essence of the work, imagine a motorboat, which thrust constant. And in order to adjust the speed of movement of the boat, you can enable or disable the motor itself. And the larger the intervals with the engine shut off, the less will be the speed of the boat, and the smaller will be the interval, the greater the speed.

So as well as a PWM. But current on and off rate occurs at a very high frequency, since the LED is almost no effect of inertia.

How to choose a quality lamp dimmable and its main characteristics

The release of LED lamps with adjustable glow made quite a few manufacturers, and depending on the brand their prices vary quite significantly. Unfortunately, there is always a big price reflects the quality of the goods. Next, we consider the main criteria on which you should pay particular attention to when choosing these lamps.

Minimum level dimming

This indicator each manufacturer a. But as the diodes themselves give a very bright light, it is best to choose products with the least possible value.

operating voltage

Unfortunately, the supply voltage may vary significantly from the standard value of 230 V. Therefore, to stably operated product should be selected such that work in the range of 170 to 260 volts.

Colour temperature

Have you ever noticed that some LED lamps shine warm yellow light, and some cold white. So this light is directly related to such parameters as color temperature. So for the workers and office buildings generally use the lamp with the figure of 4000 - 4500 Kelvin. But at home, I would recommend using lamps with values ​​of 2700 - 3000 Kelvin, it is such lamps give a warm yellow light.

Color Rendering Index RA

This index indicates how uniform the level of the different color components in the world. If this figure is low, in this light will be hardly distinguishable shades.

Light flow

Another important criterion is the LED lamp light output, measured in lumens. Moreover, this indicator can be in the range from 200 to 2500 lm.

device power

In most cases, the LED lamps are available capacity from 1 to 25 watts. In order to understand what kind of light will give one or the other lamp look out on the picture.

Type of cap and body

At the moment, dimmable LED lamps are available with all the most common types of cap.

Warranty

This is the most important parameter, since the guarantee allows you to return the bulb (with a non-warranty) and in return receive a completely new and totally free.

Life time

Often stated term trouble-free operation in, for example, 40 000 hours can be much lower. This figure depends on the technical condition of your network and the type of dimmer.

Output

So, having considered the question "What is a dimmable bulb?" we can conclude that this is a great product that allows you to not only to save electricity consumed, but also allows you to create very cozy and comfortable environment in your house.

Thanks for attention!