Hot summer is not uncommon for most regions of our country. Sometimes it does not quite easily find cool salvation from the ubiquitous heat. All of us are things for which you have to leave the house, or the work on which you need to conduct the most “hot” clock. Yes, and in the native walls it is not easier. Not everyone can afford the installation of an air conditioner or a strong fan.
In this article we will tell about USB fans that do not need power supply. 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 purchase this savior from the heat in the nearest electronics store or make it with your own hands. We will explain how to assemble a USB fan from undergraduates, as well as consider the most famous models from manufacturers.
Portable accessory is an adaptation of small dimensions. It was created for blowing small spaces and is able to serve only one or two people at the same time. However, different models may differ in size and power.
The appearance will be varied. Some are equipped with a protective mesh, and some – a closed housing with holes for air passage. Such fans can be at all open. Another one is added to the standard setting set – security.
By the way, the USB fan can be connected not only to the computer, but also to the power unit of Power Bank, so that the accessory can be taken on the road. Due to low energy consumption, the fan is able to continuously work for several hours.
In essence, it is a conventional small fan. Only instead of a standard plug for connecting to the power grid, it has a cord with a special USB connector, designed to connect with modern electronic devices.
The main elements from which the device consists of:
- stator – fixed part;
- rotor – moving part;
- Copper winding – several coils in the stator, where food is served;
- Round magnet located in the rotor.
The principle of work 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 is inferior to standard desktop designs. This is due to low energy consumption. Accessory works at a voltage of 5 V.
Pros and cons
Turning to customer reviews, we have compiled a list of advantages and disadvantages that USB fans possess.
Benefits are much more.
- Small dimensions – thanks to this, the accessory can accompany you anywhere. Houses, in the office, in short trips.
- Ease of operation – just connect the fan to the energy source via the USB cord and click the “ON” button.
- Low price – the cost of accessories varies from 100 to 1 thousand. rubles, depending on the model.
- A large selection – a wide range of allow you to choose a fan based on any requirements.
- Diverse design – can be both strict and original. You can choose the model taking into account your preferences.
- Additional features – some fans have additional designs. For example, there are models with a clock, with illumination, or and so, and with another.
Now a little more about the shortcomings, whose list is not so wide.
- Low performance – if compared with conventional electronic fans. USB accessory is aimed at blowing areas of the face and neck of one person. It is not capable of providing a sufficient level of comfort at high temperatures.
- No settings – you can not adjust the direction of air flow from mini fans.
- Comprehensive work – if the fan supports several functions, they only work simultaneously. For example, you can not turn off the rotation of the blades, leaving the working backlight.
Separately, it is worth talking about safe use, as well as about leaving the device that requires special attention. Minus it or not, decide for yourself.
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 unattended fans that are not equipped with the protection of the blades, especially if you have children or pets. They can be born. Adult man is able to hurt by negligence. These rules relate to larger desktop fans. Mini-models are not able to cause serious damage.
It is strictly forbidden to cover the working fan with a cloth. The mechanism can burn or hang out ignition. It is forbidden to turn on the device if the cable is damaged for power. If liquid got on the fan, it is necessary to disable it immediately and do not turn on until it fails.
Attempts to independently repair during breakdowns are not welcome. The device from time to time needs to be cleaned from dust. To do this, turn off the fan from the power supply and wipe the surface with soft and slightly damp cloth. Need to follow so that the moisture does not fall inside.
On the shelves of specialized stores you will find a variety of models from manufacturers. From such an abundance of the eyes can disperse. Which one to choose that he could serve faithfully and the truth at least one hot summer? There are a number of criteria for which you need to choose USB fans.
- From the size of the blades of the envy intensity of blowing. If you need a fan that will blow up specifically, and not a whole workplace, choose a device with small diameter blades.
- Number of noise. Depending on the power, fans can create a different noise level. Maximum, as a rule, does not exceed 30 decibels. Such sounds can distract you from work and interfere with focusing.
- Security level. We have already told about possible consequences.
It is advisable to choose a model with a grille. If at home there are children or pets – a model with a shallow grille.
And, of course, the price. Choose a fan based on your financial capabilities. We will tell about the models that, according to customer reviews, became the best current summer.
Ambelly – an example of a good desk fan. With a meter cord, it can be connected to any device with a USB entry. Equipped with a stand and customized head, so you yourself can adjust the airflow. One of the main features of the model – Built-in battery. So the fan will be able to work for a while without connecting. He also practically does not make noise.
TACSON – Flexible Mini Fan, an interesting appearance. It can be said that it is equipped with a built-in clock, although they are simultaneously and is. The fact is that there are green and red LEDs on the blades, which are formed during rotation dial. By the way, they are made of soft materials and are not able to cause harm with random touch.
Prettycare – the most silent of existing fans. It is ensured due to an oil-free axial engine and anti-vibration pillows. Also, the pluses of the model include the presence of a metal stainless grid, which guarantees safety during operation. Air flow can be configured at will.
IEGROW – the most highly appreciated by buyers accessory. He is capable not only to cool the air, but also moisturize it. Has several modes of operation. The same model is equipped with a battery to work without a power connection. The fan can work not only standing in one place. On the case there is a comfortable carrying handle. The model is almost silent.
How to make it yourself
Optionally spend money on expensive models when there are good hands, they can assemble any unnecessary materials. Let’s consider two handicrafts for assembling USB fan.
The main elements that you need when assembling:
- insulating tape;
- compatible knife;
- Normal USB cable.
Need more fragments, depending on the selected method, we will tell now.
This method is possible in the presence of an old cooler from a computer system unit. It will serve as a rotating part of the fan.
Cut a USB wire. You will find multicolored contacts. Green and white remove as unnecessary. Red and black need to clean. The cooler has two of the same wiring, which also need to be cleaned about 10 millimeters.
Connect the contacts according to their color. Wrap a joint place with a tape and fan ready. You only need to make the stand of the rotating mechanism. For this suit, for example, a piece of dense cardboard.
A more complex way, since in this case you will need a blade. You can make them from an unnecessary digital disk. Evenly draw it on 4-8 parts and ride to the center, but not until the end. Then heat the disc so that the material becomes elastic, remove the cut parts so that they become the blades.
In the center of the disk you need to insert a plug that will be attached to the motor, and rotate plastic blades. Now you only need to build a fan stand and connect the USB wire to the motor, the same way as in the previous method.
As you can see, having a sufficient amount of time and the necessary skills, you can get a USB0 accessory almost without cost. Otherwise, you can always choose a model in the nearest electronics store. The fan will be your faithful companion in hot weather.
About how to make a USB fan with your own hands, look in the following video.