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

Hot summers are not uncommon for most regions of our country. Finding a cool escape from the omnipresent heat is sometimes not easy. We all have things to do that we have to leave home for, or jobs that require our hottest hours. Yes, and in the native walls it is not easier. Not everyone can afford to install an air conditioner or a good fan.

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

You can get this heat saver at your nearest electronics store or make it yourself. We will explain how to assemble a USB fan from available tools, and also consider the most famous models from manufacturers.

The portable accessory is a small device. It was created to blow off small spaces and can only serve one or two people at a time. However, different models may differ in size and power.

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

By the way, the USB fan can be connected not only to a computer, but also to a Power Bank energy device, so you can take the accessory with you on the road. Due to its low energy consumption, the fan is able to run continuously for several hours.

At its core, it is a small ordinary fan. Only instead of a standard plug for connecting to the mains, 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 - stationary part;
• rotor - moving part;
• copper winding - several coils in the stator, where power is supplied;
• a 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, in terms of power, USB fans are inferior to standard desktop designs. This is due to the low energy consumption. The accessory operates at a voltage of 5 V.

Looking at customer reviews, we have compiled a list of the advantages and disadvantages of USB fans.

There are many more advantages.

• Small dimensions - thanks to this, the accessory can accompany you anywhere. At home, in the office, on short trips.
• Ease of use - just connect the fan to an energy source via a USB cable and press the "power" 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 requirement.
• Diverse design - can be either strict or original. You can choose a model based on your preferences.
• Additional functions - some fans have additional designs. For example, there are models with a clock, backlit, or both.

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

• Low performance - when compared to conventional electronic fans. The USB accessory is aimed at blowing the face and neck area of ​​one person. It is unable to provide a sufficient level of comfort at high temperatures.
• Lack of settings - it is impossible to adjust the air flow direction of the mini-fans.
• Complex work - if the fan supports several functions, then they work only at the same time. For example, you cannot turn off the rotation of the blades, leaving the backlight working.

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

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

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

1. The intensity of the blowing depends on the size of the blades. If you need a fan that will blow specifically on you, and not the whole workplace, choose a device with small diameter blades.
2. The amount of noise. The fans can generate different noise levels depending on the power. The maximum, as a rule, does not exceed 30 decibels. Sounds like these can distract you from your work and make it difficult to concentrate.
3. Security level. We have already discussed the possible consequences above.

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

Ambielly is an example of a good desktop fan. Using a meter cord, it can be connected to any device with a USB input. Equipped with a stand and an adjustable head, so you can adjust the air flow yourself. One of the main features of the model is the built-in battery. So the fan can run for a while without being connected. It also makes almost no noise.

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

Prettycare is the quietest fan available. It is powered by an oil-free axial motor and anti-vibration pads. Also, 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 highly regarded accessory by customers. He is able not only to cool the air, but also to humidify it. Has several modes of operation. The model is also equipped with a battery to work without being connected to the power supply. The fan can work not only while standing in one place. There is a convenient carrying handle on the body. The model is practically silent.

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

The main elements that you will need during assembly:

• insulating tape;
• sharpened knife;
• regular USB cable.

We need more fragments, depending on the chosen method, which we will now talk about.

This method is possible if you have an old cooler from a computer system unit. It will serve as the rotating part of the fan.

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

Connect the contacts according to their color. Wrap the joint with electrical tape and the fan is ready. You just need to make the stand of the rotating mechanism. For this, a piece of thick cardboard is suitable, for example.

A more complicated method, as in this case you will need blades. You can make them from an unnecessary digital disc. Divide it evenly into 4-8 pieces and cut to the center, but not completely. Then heat the disc to make the material elastic, bend the cut pieces back so that they become blades.

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

To learn how to make a USB fan with your own hands, see the next video.