LED dimmable lamp: an economical device of a new generation
The traditional light bulb, which shines brightly but consumes a lot of energy, has been replaced by an LED dimmable lamp. The products are designed using a special technology that allows you to smoothly adjust the intensity of the luminous flux. This feature allows not only to save electricity, but also has a beneficial effect on human health. What caused the popularity of this device is described in detail in this article.
How the LED lamp works
An LED lamp does not differ in appearance from a traditional light source. The design of the device is represented by a standard base with a conventional thread. Therefore, the lamp can be used for conventional cartridges, which eliminates the need to change the electrical equipment of the room. However, these devices have significant differences in internal configuration.
The design consists of a contact base, a housing that performs the function of a radiator, a power and control board, a board with LEDs and a transparent hood. These devices cannot be used for a 220 V network, since they will not work with such a voltage and current. To avoid lamp burnout, lamp housings are additionally equipped with a power and control board, which reduces voltage and rectifies current.
The principle of operation of an LED lamp is based on physical processes, the essence of which is the appearance of a luminous flux at the point of contact of two elements from different materials, immediately after an electric current has been passed through these substances. The main paradox of this phenomenon is that both elements are semiconductors capable of passing electric current only in one direction, and this is provided that they are interconnected.
There is also a transition of matter from one state to another, which is accompanied by the release of thermal energy. In electronics, devices that can not only transmit current, but also emit light are called LEDs. Such elements cover the entire spectrum of light radiation. In this regard, there are blue LED lamps with a cold light source and yellow or red – with a warm glow effect.
Dimmed LED lamps: what is it
The main difference between dimmed lamps and traditional ones is the presence of a light regulator for LED lamps in the device housing, thanks to which the lamp brightness is smoothly adjusted. The output power of the dimmer is the main parameter of the device. The maximum number of connected lamps depends on its value. The dimmer works as a rheostat. It allows you to smoothly adjust the brightness of incandescent lamps.
The LED lamp with a dimmer is equipped with a unit with a pulse width modulation function. With its help, the stabilizer located in the housing of the device is controlled, thanks to which the brightness of the lighting changes. The radiation intensity is adjusted by the way the voltage is applied to the LED. Here a sine wave is used, where the period of time under voltage is correspondingly equal to the value of time without voltage. To increase the brightness, it is necessary to increase the voltage supply time, and to reduce it, it is necessary to increase the time interval without voltage.
Important! A conventional energy-saving lamp cannot be connected via a dimmer. The device is designed for a certain number of cycles, and constant flashing will contribute to the rapid burnout of the bulb.
The change in the frequency of flashing of the light bulb occurs imperceptibly to the human eye, as a result of which the illumination varies in the range of 10-100%.
Types of dimmer for LED lamps
According to the control method , dimmers are distinguished:
The light intensity of the rotary dimmer is carried out by means of a rotary knob. Rotary-pressure devices are actuated by mechanical pressure on the handle. When it rotates, the brightness of the light bulb is adjusted. The degree of illumination on the keyboard devices is selected by repeatedly pressing the button. The necessary mode is selected on the touch dimmers by touching the control panel with your finger.
Today you can buy a dimmable LED lamp of a special design, in which, thanks to a light touch of the button located in the central part of the panel, the light turns on, and a prolonged touch decreases or increases the brightness of the lamp.
Depending on the location of the device , there may be:
- monoblock, or overhead;
In the first version, the dimmer is combined with a switch. Modular devices are installed on a DIN rail in a switch cabinet. Such devices are usually mounted in the entrance. They are often chosen by owners of private houses. The devices perform basic adjustment functions and are hidden from prying eyes. The latter type of dimmers is built into a special mounting box.
Depending on the functional characteristics , dimmers are distinguished:
The operation of mechanical devices is regulated by means of a wheel with a button. The device is configured manually. Electronic devices are equipped with a sensor, touch panel and automation. Remote devices are capable of receiving a signal at a distance, so the degree of illumination can be adjusted using a remote control. Acoustic devices are triggered by a clap or a voice command.
The most popular are rotary devices, which are mounted in a podrazetnik. Such devices are easy to install, manage and have a low cost.
Advantages of dimmed LED lamps
Due to the fact that a special driver is included in the design of the LED dimmable lamp, it is possible to adjust the light intensity. When there is no need for the lighting device to work at full power, you can reduce the brightness. This will help to reduce electricity costs as a result of economical electricity consumption. Smooth intensity control will extend the service life of the lamps.
With the help of dimmers, you can zone the room, place bright accents or change the atmosphere in the room. Such devices are often used to create colorful and bright effects for presentations or promotions. The use of dimmers has a beneficial effect on human health. After all, when bright light is turned on sharply, there is an unpleasant sensation of light perception by the pupil of the eye, and the dimmable LED lamps can be turned on immediately by only 10%, gradually adding intensity, which will not lead to eye injury. Thanks to the built-in dimmer, the LED lamp does not emit UV rays and IR spectrum.
The dimmed lamp can be combined with a motion sensor, which will give a signal to automatically turn on the illumination. The combination of a dimmer and a photosensitive sensor will automatically adjust artificial lighting to natural. Modern models can have a smooth start or timer function.
Useful advice! Using dimmers in an empty room, you can create the effect of presence when the owners of the house are away. This can become a good security system that will automatically turn on and off the lights in different rooms.
LED dimmable lamp: selection criteria
The first thing you need to pay attention to when choosing an LED dimmable lamp is the shape of the device. It is on this that the desired lighting effect in the room depends. Also, the nature of the lighting will be affected by the condition of the protective hood, which can be transparent or opaque. In the first variant, you can get a saturated stream of bright light. The product with frosted glass, which is covered with a special coating from the inside, provides a smooth, pleasant light.
The light in the pear-shaped lamp will be directed downward, leaving round shadows on the ceiling. The product of a classic shape has a lighting angle of up to 240 degrees. For open floor lamps and chandeliers, it is advisable to use a dimmable LED lamp e14 in the form of a ball or candle with a lighting angle of 240-360 degrees.
To illuminate a separate area, reflex-type lamps are used, which narrow the luminous flux. For suspended or suspended ceilings, accent lamps for spotlights are used. The elements do not emit heat, so they can be mounted in furniture. The angle of illumination of such lamps is 100 degrees.
The next criterion is the degree of light flickering, which is especially important for e27 dimmed LED lamps, which are often used in residential areas. It is impossible to completely eliminate this phenomenon. Therefore, preference should be given to products that have a faint flicker. You can define it in this way. During the operation of the device, a person needs to look from one object to another. At this time, there is a second slaboscopic effect when the human eye simultaneously sees several objects.
Important! If the lighting device has a strong flicker, it cannot be used for living rooms.
Next, you should pay attention to the level of dimming. The minimum value for dimmable LED lamps is 10%. This suggests that at a minimum brightness, the product shines quite strongly. It is better to select lamps with the lowest on-off limit.
Dimmers for 220V LED lamps: a step on the way to a “smart” home
What is a dimmer. Types and schemes of devices. How to connect a light regulator. Pass-through dimmers. Manufacturers and prices. Assembling the dimmer with your own hands.
Physical characteristics of LED dimmable lamps
Manufacturers produce LED lamps with a dimmer with a power of 1-25 watts. For the traditional assessment of the luminous flux, the power of a conventional incandescent bulb is used as an equivalent. The indicators for both elements are in the ratio of 1:8. For example, if you buy a dimmable e27 LED lamp with a power of 8-10 watts, it will correspond to a conventional incandescent lamp in terms of electricity consumption by 60 watts. The energy saving class is important. Manufacturers produce devices of class A, A+, and A++.
The next important parameter is the input voltage. Since there are frequent voltage surges in the power supply system, it is necessary to choose lamps with a wide input voltage range operating in the range of 170-250 V.
A high lamp power indicator does not always correspond to good brightness. When choosing a device, pay attention to the luminous flux indicator, which can be in the range of 200-2500 lm. It should be remembered that all LED lamps quickly lose brightness, and hence efficiency for a long time of continuous operation.
When choosing a lamp, you should pay attention to the color temperature, which determines the spectral composition of the light source. Elements with values of 4000-4500 K are popular for most rooms. For an apartment, you should choose lamps that create warm light with a value of 2700-3500 K, cold tones with a temperature of 4000-4500K will be convenient for reading.
An important characteristic is the color rendering index, which corresponds to the level of visible color of the object in artificial lighting, depending on the natural appearance. This value must be at least CRI 90.
Varieties of LED lamp bases
The most popular are the bases of dimmable LED lamps e27 and e14. The letter “e” in the name indicates that the design of the part is represented by a standard threaded connection. Numerical values correspond to the diameter of the base in millimeters.
The first option is the most common element. Lamps with such a base can have a power in the range of 5-18 watts. The most popular types of domes of such products are a hemisphere and a ball. Lamps with e27 base are used for closed lamps and chandeliers in living rooms.
The dimmed LED lamp e14, which is often called “minion”, is used for sconces, floor lamps, outdoor lamps of small size, in ceiling chandeliers designed for a large number of lamps. Such a device can have a power of 2-10 watts. The shape of the dome can be made in the form of a ball or a candle.
Less common are the gx53 dimmable LED lamps. The products have a round shape, with a luminous flat surface with LEDs. The base is made in the form of pin contacts. The lamps are designed for special lamps of the same shape. They are often chosen for rooms with high humidity.
Dimmed gu 5.3 LED lamps are equipped with a base with a pin attachment to the lamp. The digital value corresponds to the distance between the contact centers in millimeters. Such products are characterized by low power and small size. Lamps are used for decorative illumination of stands, paintings, showcases, etc. For this purpose, it is also possible to use the gu10 dimmed LED lamps, in which the pins of the base are located at a distance of 10 mm from each other. They are noticeably thickened, which is convenient and reliable for rotary connection with the cartridge.
Useful advice! The gu 5 3 LED dimmable lamp can be used as a replacement for the uneconomical outdated MR16 halogen lamp, which also has a glow angle of 30-180 degrees.
The G9 LED dimmed lamps are microlamps. They are also used for spot design illumination. The shape of the lamp can be varied. But most often there is a device in the form of a tablet.
The embodiment of new technologies is lamps, which have ventilation ducts in the basement. They contribute to the efficient removal of heat from the diodes and the inside of the lamp, which prolongs the service life of the product.
Manufacturers of LED Lamps with Dimmer
Among the popular manufacturers, we can single out the Uniel company, which produces LED lamps and dimmers. The products are characterized by the CRI 80 index. The brightness is adjustable between 10-100%. The input voltage of the product is in the range of 40-250V. LED lamps have a matte bulb. The service life of the product is 30 thousand hours.
The lamps are presented in two series: Palazzo Dimmable and Cristal Dimmable. The models of the first series have a uniquely shaped housing equipped with four ventilation ducts. Products with a base e14, e27, gu10, gu 5.3 are characterized by a power of 5-7 watts, a luminous flux intensity of 500-600 lm. They are used for spot and reflex light fixtures. They can have the shape of a ball or a candle.
The models of the second series are represented by LED dimmable lamps e14, which you can buy for 320 rubles. The case is made of aluminum alloy. LEDs are located on metal petals in the bulb, creating a wide angle of light transmission up to 360 degrees.
Philips produces a wide range of products with different versions of the base and the shape of the housing. Especially popular are the gx 53 dimmed lamps used in bathrooms as spotlights.
The products are manufactured using a special filament technology. Inside the case, LED filaments are formed, resembling a glowing spiral. Thanks to the Dim Tone function, when the brightness decreases, the room lighting becomes warmer. The design of the base has a hidden ventilation system, which increases the service life of the product up to 40 thousand hours. The price of an LED dimmed lamp is in the range of 220-410 rubles.
Gauss LED dimmable lamps
The company manufactures a wide range of lighting equipment, including dimmable LED lamps. The products are characterized by an input operating voltage of 185-265V and a color rendering index equal to 90.
The models are available in two color temperatures: 2700 and 4100 K. The working time of the lamps reaches 35 thousand hours. The manufacturer produces these types of lamps:
- filament products in the form of a ball or candle, with a power of 5W, with a luminous flux of 420-450 lm;
- soffit dimmable LED lamps gu 5.3 220V and gu10 with a luminous flux of 500-530 lm;
- cantilever products with a g9 base with a power of 3 watts with a luminous flux value of 280-300 lm.
Separately, you can select an additional function in the form of step dimming of LED lamps. The products are characterized by a specific principle of operation. The structure already has a built-in element in the base, thanks to which the brightness is adjusted. The lamp can be operated from the mains with a standard voltage of 180-240 V.
You can buy a dimmable e27 LED lamp for 250 rubles. They are produced in the form of a candle or a ball with a power of 7-70 Watts in two color values of 2700 and 4100 K. The warranty period of the lamp is 3 years.
The manufacture and use of LED dimmable lamps is rapidly gaining momentum. Until recently, LED lighting devices could not be used with light regulators. The problem was solved after the introduction of a dimmer into the design of the lighting element. An important condition for long-term operation of the device is compliance with the recommended parameters. Therefore, before buying a dimmable LED lamp e14 or e27, you should study the product characteristics in detail.