USB fan: what is it and how to do it yourself?

Hot summer is not uncommon for most regions of our country. Sometimes it is not at all easy to find a cool escape from the omnipresent heat. We all have business for which you have to leave the house, or work on which you need to spend the hottest hours. Yes, and in native walls is no easier. Not everyone can afford the installation of air conditioning or a good fan.

In this article we will talk about USB-fans that do not need power supply. They work when connected to a computer or laptop. Due to this, such an accessory becomes an indispensable companion in a hot office.

You can buy this savior from the heat in the nearest electronics store or do it yourself.We will explain how to assemble a USB fan from improvised means, and also consider the most famous models from manufacturers.

Portable accessory is a device of small dimensions. It was created to blow small spaces and can serve only one or two people at a time. However, different models may vary in size and power.

Their appearance varies. Some are equipped with a safety net, and some - a closed housing with openings for air passage. Such fans may be completely open. To the standard set of parameters one more is added - security.

By the way, the USB fan can be connected not only to the computer, but also to the Power Bank power device, thanks to which the accessory can be taken on the road. Due to low power consumption, the fan is able to work continuously for several hours.

At its core, it is a regular small fan. Only instead of the standard plug for connecting to the power supply, it has a cord with a special USB connector, designed to connect with modern electronic devices.

The main elements that make up the device:

• stator - fixed part;
• rotor - movable part;
• copper winding - several coils in the stator, where power is supplied;
• round magnet located in the rotor.

The principle of operation is quite simple. The winding under the influence of electricity creates an electromagnetic field, and the rotor, equipped with blades, begins to rotate.

Of course, the power of USB-fans are inferior to standard desktop designs. This is due to low energy consumption. The accessory works at a voltage of 5 V.

Referring to customer reviews, we have compiled a list of advantages and disadvantages that USB-fans have.

The benefits are much greater.

• Small dimensions - thanks to this, the accessory can accompany you anywhere. At home, in the office, on short trips.
• Easy operation - just connect the fan to the power source via the USB cable and press the “on” button.
• Low price - the cost of accessories varies from 100 to 1 thousand rubles, depending on the model.
• Large selection - a wide range of models will allow you to choose a fan based on any requirements.
• The various design - can be both strict, and original. You can choose a model based on your preferences.
• Additional features - some fans have additional designs. For example, there are models with a clock, backlit, or with both.

Now a little more about the shortcomings, whose list is not so wide.

• Poor performance - when compared with conventional electronic fans. The USB accessory is aimed at blowing the face and neck of one person. He is not able to provide an adequate level of comfort at high temperatures.
• No settings - you can not adjust the direction of air flow from mini-fans.
• Complex work - if the fan supports several functions, then they work only simultaneously. For example, you can not turn off the rotation of the blades, leaving a working backlight.

Do not turn on the fan if it is not fixed on the surface! Otherwise, you can harm both the mechanism and your own health.It is not recommended to leave fans unattended without protection of the blades, especially if you have children or pets. They can get hurt. An adult can be injured by negligence. These rules apply to larger desktop fans. Mini models are not capable of causing serious damage.

It is strictly forbidden to cover a running fan with a cloth. The mechanism may burn or cause a fire. Do not turn on the device if the power cable is damaged. If liquid has been spilled on the fan, it must be immediately shut off and not turned on until it is completely dry.

On the shelves of specialized stores you will find a variety of different models from manufacturers. From such an abundance of eyes can scatter. Which one of them to choose so that he could serve faithfully at least one hot summer? There are a number of criteria for choosing USB fans.

1. From the size of the blades envy blow intensity. If you need a fan that will blow you specifically, and not the whole workplace, choose a device with small-diameter blades.
2. The amount of noise. Depending on the power, the fans can produce different levels of noise. The maximum, as a rule, does not exceed 30 decibels. Such sounds can distract you from work and prevent you from concentrating.
3. Security level We have already told about the possible consequences above.

And, of course, the price. Choose a fan based on your financial capabilities. We will talk about the models that, according to customer reviews, have become the best this summer.

Ambielly is an example of a good desktop fan. With the help of a meter cord, it can be connected to any device with a USB input. Equipped with a stand and a customizable head, so you can adjust the air flow yourself. One of the main features of the model is the built-in battery.So that the fan can work for some time without connecting. He also makes little noise.

Tacson - flexible mini fanhaving an interesting look. We can say that it is equipped with a built-in clock, although at the same time they are. The fact is that on the blades there are green and red LEDs, which during the rotation form a dial. By the way, they are made of soft materials and are not capable of harm if accidentally touched.

Prettycare is the quietest of existing fans. It is provided by an oil-free axial engine and anti-vibration cushions. The advantages of the model include the presence of a metal stainless mesh, which guarantees safety during operation. The air flow can be adjusted as desired.

IEGROW is the most appreciated accessory by shoppers. He is able not only to cool the air, but also to moisten it. It has several modes of operation. Also, the model is equipped with a battery to work without connecting to the power supply. The fan can work not only standing in one place. On the case there is a convenient handle for carrying. The model is almost silent.

It is not necessary to spend money on expensive models, when there are good hands, they can collect anything unnecessary materials. Let's take a look at two handicraft ways to build a USB fan.

The main elements that you will need when assembling:

• insulating tape;
• ground knife;
• ordinary USB cable.

We need more fragments, depending on the chosen method, which we now tell.

This method is possible in the presence of the old cooler from the computer system unit. It will serve as a rotating part of the fan.

Cut the USB wire. You will find multicolored contacts. Remove green and white as unnecessary. Red and black need to be cleaned. The cooler has two of the same wiring, which also needs to be cleaned about 10 millimeters.

Connect the pins according to their color. Wind tape over the joint and the fan is ready. It is only necessary to make a stand rotating mechanism. For this fit, for example, a piece of thick cardboard.

A more complicated way, since in this case you will need blades. You can make them from unnecessary digital disk.Scale it evenly into 4–8 parts and cut to the center, but not completely. Then heat the disc to make the material become elastic, bend the cut parts back so that they become blades.

In the center of the disk you need to insert a cork, which will be attached to the motor, and rotate the plastic blades. Now you only need to build a stand for the fan and connect a USB cable to the motor, the same way as in the previous method.

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