USB lamps

Technologies do not stand still and are constantly evolving, delighting people with new useful gadgets that make life easier. More recently, the notorious USB port has been essential for connecting keyboards, mice and other office devices. Then compact flash drives were invented, which also plugged into this connector. Over time, the functions of the USB port have been constantly added, and today a large number of different devices can be connected to it. These include special lamps, which are worth talking about in more detail.

If you are going to consider in detail the functional USB lamps, you need to answer the main question: what is still included in the definition of a USB gadget.

All electronic gadgets can be roughly divided into functional and decorative:

• Functional devices perform specific functions. They are acquired to perform certain tasks.
• Decorative models are designed to please the eyes of users. They are not functional. There are many different decorative devices on the market today. Sometimes there are items that have an unjustifiably high cost.

However, there are also absolutely useless, but well-advertised gizmos. These knickknacks include small hand warmers or micro-refrigerators.

Currently, a USB lamp (plasma lamp) is very popular, which is a ball with a lightning bolt inside. It is believed by many to have a purely decorative function. This item looks interesting, but it is difficult to consider it useful. Moreover, lamps with lightning have a negative effect on household appliances located within 50 m. Because of such a thing, flash cards may stop working, and the smartphone may start to reboot.

The useful category includes two types of USB lamps:

• models with a stand;
• models without stand.

Luminaires with a stand have more impressive dimensions. They are connected to the computer using a special wire, but still have a separate base. As a rule, such devices have only 2 buttons. One of them turns on the main light, and the second one turns on the stand backlight.

The developers claim that such gadgets will be very useful for working in the dark. They don't have to be combined with other light sources in the room. However, in order to find the power button in a dark room, the stand must be illuminated. This is why there is a second button on such devices.

There are several types of stand lamps.

The most common are LED models... There are also halogen and luminescent copies.

Halogen products are becoming more and more a thing of the past, and many manufacturers have already abandoned the manufacture of such options. This is due to the unnecessary heating of the lamps and high power consumption.

Good old fluorescent lamps also heat up, but they use less energy. However, these bulbs generally have a very short lifespan.

Another advantage of LED bulbs is that they are economical and consume little electricity. Such items are lightweight, since most often they lack metal elements.

USB LED bulbs have special flexible tubes. By controlling such holders, you can direct the lighting in any direction and place it at any distance.

If you decide to buy an LED lamp, then you need to pay special attention to its stand. It often happens that the weight of the light bulb itself exceeds the weight of the base. This may cause the device to become unstable and easily fall off the table. The length of the wire must also be taken into account. It must be at least 50 cm.

Varieties without a stand are compact in size. They are flexible tubes with LED backlights mounted on them, located at the end. There is a USB plug on the other end of these products.

There are interesting options in which the tube is made of a transparent material. Inside them there are LED garland bulbs. USB LED luminaires without a stand can only have one diode (as a light source) or several small bulbs.

It should be noted that specimens with a large number of diodes without a base are quite rare. However, if you properly search for such a product in online stores, then you will almost certainly be able to find the desired option.

This kind of USB lamp is especially useful when traveling or traveling. For example, on a train, lighting can be quite poor, but you can easily solve this problem if you take a compact light bulb with you without a stand. As a rule, such lamps are easily twisted and take up very little space. They can be placed not only in a bag, but also in a clothing pocket.

The most common are small lamps with one diode. Such devices are designed to backlight a short laptop keyboard - with a diagonal of 15-16 inches.

For a mid-sized laptop, a special LED version with multiple light branches pointing in different directions may be suitable. It is necessary to choose such devices in accordance with the dimensions of the equipment. The more impressive dimensions a laptop has, the more diodes should be in the lamp.

There are also USB lamps with rechargeable batteries... They plug into the USB port for charging purposes only. If you turn off the computer with the battery light connected, it will not stop working. If you want to purchase a lamp exclusively for keyboard backlighting in the dark, then there is no need for models with rechargeable batteries. Better to find a more cost effective device without this part.

Not so long ago, appeared on the market USB salt lamps... They contain high-tech shades made of salt crystals. Such devices emit ions useful for the human body into the environment. They neutralize the negative effects of electromagnetic radiation. At the base of these bulbs there is an LED that has a soft and pleasant light.

USB luminaires do not differ in complex designs. They usually consist of three main elements:

• USB plug;
• cable (or flexible tube);
• light bulbs (more often LED).

These bulbs can be fitted with different lengths of cords. Options in which this part is longer can be used in any position. However, such items are not very convenient to carry or carry with you, as they require a little more space than small cords.

LED USB lights can be retrofitted by hand. To do this, it is enough to insert additional light sources into them. Of course, before doing this, it is necessary to calculate the maximum load of the device.

USB lamps are distinguished not only by their compact size, mobility, but also by their interesting design. Today, in computer hardware stores (and not only), you can find many different options:

• The most common are simple firefly lamps... They have a round glass shade and bases (usually metal) that reflect light. Multi-functional touch-controlled fireflies are popular. The color emitted by such lamps can be smoothly changed at your discretion.

• It differs in an interesting, unusual appearance astronaut lamp... Such designs consist of a small astronaut figurine, a flexible tube coming from his backpack, and a USB plug. The light in these models comes from the helmet of the spacesuit. If you raise this light bulb higher, it will firmly hold on to the tube, creating the illusion of a "flying" little astronaut, illuminating the laptop keyboard.

• Recently, small USB bulbs are very popular, which are plastic strips with LEDs located on them. The well-known manufacturer Xaomi produces similar products with 6 LEDs. Such variants do not have long flexible tubes and are rather short.

• Mobile lamps connected to a computer or laptop are not only small. For example, modern manufacturers produce extremely interesting specimens with batteries, made in the form of animals... These models often have a Color Change function.

Sometimes parents use these items as nightlights for children. There are many options: in order not to be mistaken with the choice, study the characteristics of the models, compare several devices.

How to make a USB lamp with your own hands, see the next video.