The question is trivial. First, we recommend determining where to install your homemade fan. Two types of engines dominate in technology: commutator (historically the first), asynchronous (invented by Nikola Tesla). The first ones make a lot of noise, switching sections causes a spark, the brushes rub, causing noise. An asynchronous motor with a squirrel-cage rotor is quieter and generates less interference. You will find the start-up protection relay in the refrigerator. By adding a couple of phrases of humorous phrases, we will return the seriousness of the site. How to make a fan with your own hands without scaring your family. Let's try to answer.

Aspects of designing a homemade fan

The design of the fan is so simple that there is no point in telling or describing the insides. What to consider when designing? Remember the growl cyclone vacuum cleaner, volume above 70 dB. Inside is a commutator motor. Often deprived of the ability to regulate speed. Decide, is a similar sound pressure level acceptable at the installation site of a homemade fan? Having chosen the second, we will concentrate on asynchronous motors; simple models do not require a starting winding. The power is low, the secondary EMF is induced by the stator field.

The drum of an asynchronous motor with a squirrel-cage rotor is cut with copper conductors along the generatrix, at an angle to the axis. The direction of the slope determines the direction of rotation of the engine rotor. Copper conductors are not insulated from the drum material, the conductivity of the Olympic metal exceeds the surrounding material (silumin), the potential difference between adjacent conductors is small. Current flows through copper. There is no contact between the stator and rotor, the spark has nowhere to come from (the wire is covered with varnish insulation).

The noise of an asynchronous motor is determined by two factors:

1. Alignment of stator and rotor.
2. Bearing quality.

By properly setting up and servicing an asynchronous motor, you can achieve almost complete noiselessness. We recommend considering whether sound pressure level is important. The case concerns a duct fan - it is allowed to use a commutator motor, the requirements will be determined by the location of the section.

The duct fan is placed inside the air duct section and mounted, breaking the duct. The section is removed for maintenance.

Noise loses its dominant role. The sound wave, passing through the air duct, attenuates. Particularly fast is the part of the spectrum that has inconsistent dimensions relative to the width/length of the path section. Read more textbooks on acoustic lines. The brushed motor can be used in a basement, garage, or unoccupied areas. The neighbors of the cooperative will hear, but will rather be too lazy to pay attention.

What is good about a commutator engine, what are we fighting for the right to use. Three disadvantages of asynchronous:

At the initial moment asynchronous motor does not develop high torque, a number of special design measures are taken. It doesn't matter for the fan. Most household models are equipped with asynchronous motors. In production, the number of phases is increased to three.

Finding a motor for a fan

One YouTube video suggested using an engine DC 3 volt from a hardware store. Tops a USB cord, works by rotating the laser disc blade. Useful invention? If you're tired of the extra port, this will help you survive the heat. It’s easier to take a processor cooler and power it from the system unit. The yellow wire goes to 12 volts (red to 5). The black pair is earth. You can assemble it from an old computer. Citizens of the Russian Federation are simply too lazy to invent, so we throw interesting equipment into a landfill.

Asynchronous fan motors operate without a starting capacitor... The peculiarity of fan motors is that they come directly with a winding. A couple of tips to help you get an engine:

Make a fan impeller

The question of what to make a fan from has not been resolved; the authors kept silent about the impeller. First things first, the refrigerator! The compressor is blown by an impeller. When you get the motor out, remove it. It will come in handy. Regarding washing machine, launch the drum onto an aircraft propeller. Plastic tank It's good to make a body. Heat the folded areas with a hair dryer.

Inspect the blender and equip it with an unnecessary laser disk shaped like an impeller. You can make a fan yourself using available materials. You don't need a lot of power, and there's no point in trying too hard to fine-tune the details. We believe that readers know how to make a fan with their own hands.

Eternal CPU cooler fan

We decided to please our readers by telling you how to make a fan. This is not the first review, I had to dig around to find something worthwhile. Looks great idea to create eternal fan, spinning forever. User mail.ru posted a design that looks attractive. Let's take a closer look, while thinking about how to make a fan that runs forever.

You know, of course, system units work quietly ( modern models). The slightest noise means: the cooler's axis is out of alignment, or it's time to lubricate the old fan. They work for hours, days add up to weeks, the system unit will last for years. It became possible thanks to well-thought-out technology. Think about it, noise depends on the magnitude of the friction force. Mechanical energy becomes thermal and acoustic due to the presence of roughness. CPU coolers rotate easily, just blow on them.

The author of the video - we apologize for the lack of a name, we justify: the video is in English - suggests assembling an eternal fan from an accessory. The fitting accuracy of the parts is high, the blade rotates easily. Costs are reduced to a minimum. The author of the video posted by the deirones channel noted: the processor fan is powered by direct current. I climbed inside and found four coils, equally spaced around the circumference, with their axes directed towards the center of the device.

There are no commutators inside, which means a paradoxical fact: the field of the coils is constant.

If the induction motor of a typical fan is powered by 220 volts alternating voltage, which creates a rotating magnetic field, in our case the picture is constant. You could say: inside the rotor sets in motion a commutator that creates desired distribution. This is not true, and is confirmed by the further course of the author’s thoughts and the result of experience. A Western innovator decides to replace the coil with a permanent magnet. Indeed, there is no alternating field - why electric current?

The author demonstratively cuts off the power cord and places the neodymium (hard drive) magnets around the perimeter of the frame. Each is on the continuation of the coil axis. The work is completed, the blades begin to rotate vigorously. We believe that a principle is simply used that is hushed up in orthodox literature. Trade secret of the patent holder.

The initial movement of the blade is obtained by random fluctuations in the air. Reminiscent of a magnetron, the vibrations are caused by the natural chaotic movement of elementary particles. The question arose as to what determines the direction of rotation. The design is absolutely symmetrical. We decided to look into it and express our observations:

Agree, it’s more convenient than messing up USB ports and constantly wasting batteries. The eternal fan operates from an arbitrary position and is devoid of wires. We believe that the strength of the magnets plays a decisive role. The simple rule no longer works: more is better. A golden mean is emerging. When the blades spin from a random air flow, overcoming a field of neodymium pieces. Weak magnets are probably powerless to maintain stable rotation. The field strength must be exactly that created by the coils under the influence of +5 or +12 volts.

Correctly create an eternal fan

We discussed how to make a fan, measure the direction, force magnetic field coils Enjoy special devices. A magnetometer, Teslameter, is formed by a magnetic induction converter, a measuring module. When fields interact, the resulting pattern is called coupling. The converter generates EMF. The size is determined by the measured strength of the magnetic field. Like two fingers! Costs 10,000 rubles.

The magnets will be located at a considerable distance from the axis. The coils are much closer. You need to know how the picture changes with distance. According to Coulomb's law, the force decreases in inverse proportion to the square of the distance, which is true for single charges of arbitrary sign. Magnetic poles individual ones have not yet been found in nature (it is not possible to create them), the cube of distance is included in the law. Let's say the distance to the coil from the axis is 1 cm, the diagonal perimeter is 10. This means that neodymium should be 10 x 10 x 10 = 1000 times stronger than a small coil.

Nobody obliges to place neodymium magnets around the fan perimeter on diagonals. The poles lie crosswise. Adjust the force of influence over a wide range. By placing neodymium magnets in the center of the sides of the fan frame, we significantly increase the field strength. Let's do the calculation. Let's say the hypotenuse of a triangle with a side of 10 cm is a diagonal. The distance to the center of the square will be equal to 10 / √2 = 7 cm. You see, the ratio from 1000 falls, reaching 7 x 7 x 7 = 343. Weightily, those who despair of finding strong magnets neodymium to create an eternal fan.

Let's measure the strength! A compass is suitable (there are custom designs that you can assemble yourself, for example, http://polyus.clan.su/index/indikatory_magnitnogo_polja_svoimi_rukami/0-52). One coil should be connected to the power supply. Then find the position, the arrow brought up will deviate by about 45 degrees (if you don’t like it, take any other azimuth). Then start experimenting with neodymium. Place the piece on different removals, ensuring that the arrow deflection coincides with that obtained when using the processor fan coil. Surely the distance is not equal to the diagonal, half the side, the neodymium will have to be broken and cut.

By sawing one edge along the length, we carefully break the parts on a nail, obtaining the required field strength to create an eternal fan. We assume that the induction is distributed proportionally to the volume. Today we explained clearly how to make a fan with your own hands!

Power supply

Anyone who wants to make a fan with their own hands sees 3 problems: getting a motor, power supply, and making a propeller. The parts must fit together. Three problems solved, you can start making a fan with your own hands. Today there are an abundance of switching power supplies at home. Think about it, it started in the 90s. Game consoles, mobile phones, other equipment. Equipment breaks down, switching power supplies remain. The voltage is sometimes non-standard; most motors operate on any voltage. The revolutions will simply change according to the voltage. There's a broken one lying around at home household appliances- Make a fan yourself immediately.

Homemade fan power supplies

People are constantly trying to make a special fan with their own hands. One issue is often beyond the scope of discussion: the power source. The design of the fan itself is so obvious that there is no point in going into more detail. So, it’s clear that there are an unimaginable number of batteries today. Will they be able to work for a long time? The answer is no. As a last resort, take the “crown”, in Soviet era considered a reliable source of energy. The power supply is bad, the power will gradually drop, the speed will decrease, and it will irritate people. Stability without additional effort is important. There is no small 12 volt battery - get ready: let's start looking for how to make a power source for a homemade fan.

The first thing that comes to mind is to screw up the computer. It is known that miniature devices are powered by a USB port. Gadgets are recharging. The USB port is a source of inexhaustible energy. The voltage is low, you will need a low voltage DC motor. We believe you can find it at home or buy it at a hardware store. How much port power will be: according to old standards, 2–3 W. Another thing is to find a host device with updated version interface (recognized as a rarity in 2014). The developers promised to deliver 50 W (it’s hard to believe even more). True, there will be more wires, the rated voltages will increase. We remind you that according to tradition, power is supplied to the red (+), black (-) wires. White, green - signal.

It's clear, high power It’s difficult to expect - even if the port supports, the motor will not pull. It is recommended to look for a higher voltage. The motor must be supplied with higher voltage. For example, it is recommended to use a processor cooler. The supply voltage is less than the required 12 volts, the rotation speed will simply decrease. Beware of exceeding it - the motor may burn out.

We are looking for energy, the question is easier to solve than for 3 volts:

12 volt power supply for a homemade do-it-yourself fan

We suggest not assembling a switching power supply, but making a regular one with your own hands. Let us remember that the former are distinguished by small-sized transformers. Therefore, the power supply will be relatively large in size. Will consist of the following parts:

• Step-down transformer. We will not name the number of turns in advance, the voltage is unknown, rectifying it with diodes, we get 12 volts. Of course, you can experiment, like the YouTube video about homemade radios Having captured the reader, we will look for a ready-made solution.
• The bridge is full-wave; by adding three to one diode, we increase the efficiency. Radio components are not very expensive.
• The backbone of the power supply is ready so that the homemade fan can serve for a long time, let’s straighten out the network ripples. After the bridge, we will turn on the low-pass filter and redraw the circuit from the Internet.

The output is a constant voltage with an amplitude of 12 volts. Be careful not to mix up the terminals. Where the “plus” comes out and where the “minus” comes out can be understood by studying the diagram. Below is a drawing of the bridge, look and read the explanations. In radio electronics, the direction of current is indicated opposite to the true one. Charges flow, according to popular belief, in the direction from plus to minus (towards electrons). Reading the diagram, you will see: the emitter of the diode, transistor, marked with an arrow, looks incorrectly. In the direction of movement of positive charges. Each one has marks and is indicated on the diagram by a huge triangle arrow. Therefore, we always find out “plus”, guided by graphic symbols shown in the drawing.

The figure shows: the plus will be on the right, transmitted according to the diode arrow to the lower output terminal. The minus will go up. With alternating voltage (roughly speaking), plus and minus will alternate from left to right, the name of the rectifier will become clear - full-wave. Works on the positive part of the voltage and the negative. Take power, low-frequency diodes. Solid size, power dissipation is relatively high. You can calculate using a simple formula taken from a physics course. We multiply the resistance of the open p-n junction (we leaf through the reference book) by the current consumed by the motor, taking the margin at least 2 times. The motor housing contains an inscription indicating the power, which can be divided by the voltage of 12 volts, simply multiplied by 2 - 3, and taken a diode with equivalent power dissipation (see reference book).

Now let's calculate the transformer... We went here http://radiolodka.ru/programmy/radiolyubitelskie/kalkulyatory-radiolyubitelya/, chose the Trans50 program, we will master it. Please note that there is software that allows you to calculate filter parameters. Do you regret that you decided to make a fan yourself? They offer to choose one of 5 windings. Steel is involved everywhere. You can make do, the losses will be great. The steel forms a magnetic circuit, the energy goes to the secondary winding. It's better to find an old rusty transformer. Times are bad; in the hungry 90s, landfills were littered with plates of scrapped windings. There were no problems with winding the transformers.

It's time to understand what voltage is required for the correct operation of the circuit. A term borrowed from electronics will help: effective voltage AC. The voltage across the active resistance creating a thermal effect is equal to constant voltage effective amplitude. To obtain the required voltage on the secondary winding, you need to divide 12 volts by 0.707 (one divided by the square root of 2). The authors received 17 volts. The engineering calculation has an error of 30%, let's take a small margin (part of the amplitude up to 1 volt will be lost on the diodes).

As for the secondary winding current (required for calculation), type something like “cooler power” into a search engine. Let's do it together with the readers. Smart articles write: the current consumption of the cooler is indicated on the case. Once you have the required parameter, we’ll plug it into the calculator. The author took the voltage of the secondary winding to be 19 volts. The voltage drop across the p-n junctions of powerful silicon diodes is 0.5 - 0.7 volts. Therefore, an appropriate reserve is needed. Smart heads searched and concluded that the processor cooler does not consume more than 5 W, therefore, the current is 5 divided by 12 = 0.417 A. We substitute the numbers into the downloaded calculator, and for the strip core we get the transformer design parameters:

1. The cross-section of the magnetic core for winding is 25 x 32 mm.
2. Window in the magnetic circuit 25 x 40 mm.
3. The magnetic core is finished with a frame for winding wire with a thickness of 1 mm and a cross-section of 27 x 34 mm.
4. The wire is wound along the larger side of the window, leaving a margin of 1 mm from the edges, for a total of 38 mm.

The primary winding is formed by 1032 turns with a diameter of 0.43 mm. The approximate length of the wire is 142 meters, the total resistance is 17.15 Ohms. The secondary winding consists of 105 turns copper core with varnish insulation with a diameter of 0.6 mm (length 16.5 meters, resistance 1 Ohm). Now readers understand: the question of what to make a fan from begins to be decided by the core...

How effective are the proposed technical solutions? Fans are known Ancient Egypt. Evidenced by a Michael Jackson video recommending “Remember the time.” The plot was hardly prepared without the consultation of archaeologists and historians. We would like to report that in Mexico, most ladies use fans. The Spaniards know how to deal with the heat; the country lies on the equator. Think about it...

Summer has arrived, which means heat, heat and an eternal lack of coolness. But this problem can be fixed, and quite easily. You only need a few details and a little free time to make your life easier with your own hands, to fill it with the light coolness that you will certainly get by making USB fan Houses. Of course, you can go and buy a fan in a store, but how nice it will be to sit next to the same computer, and a light breeze from the USB fan you created will blow on you. And a thing created with your own hands always pleases not only the eye, but also develops self-love.

We invite you to watch a video of a homemade USB fan:

Tools for usb fan:
- A regular CD (not necessarily new);
- The tube of silicone glue is empty;
- Wooden block;
- Mini disk;
- USB cord;
- Motor;
- Holder;
- Adapter;
- Silicone glue gun.

You need to make three holes in the tube, one in the lid and two on the sides. Holes can be easily made using a regular nail, which must first be heated.

It is also necessary to make a slot or recess in the wooden block. This can be easily done using sandpaper.

The mini disk easily turns into a propeller. To do this, you need to draw it into uniform blades, then heat a stationery knife and cut along pre-drawn lines. And after that, we heat the base of each blade with a lighter and, using our hands, bend each blade a little to make a propeller.

We take the motor, holder and adapter from a non-working CD drive.

Now let's start assembling the USB fan.

Heat up the glue gun. Lubricate the holder along the axis silicone glue from a glue gun. The propeller must be firmly seated on this glue. Press on all sides. Then, on the other side of the holder, add a drop of glue and glue the adapter. We wait until the glue dries well. This usually only takes a couple of minutes.

Now take a tube of silicone glue, remove the lid and coat the inside with silicone glue. And we insert the motor inside so that the part that we will connect sticks out of the hole that we originally made.

Then we insert the USB cord into the side hole of the glue tube and connect the ends of the wires to the motor.

You need to pour silicone glue into the recess in the wooden block, and place the wire from the USB cord tightly there, and glue the tube itself with the motor inside to the base of the block. And on the other side of the block we glue the CD with silicone glue.

Now the propeller needs to be placed on the side of the adapter glued to it onto the sharp edge of the motor, which sticks out of the hole in the tube from under the glue.

And finally, our USB fan can be plugged into the network and get that long-awaited coolness.

When working at a computer in the summer, or just on vacation, sometimes you want a gentle breeze, “local” coolness. The air flow of an office air conditioner doesn't create the sweet comfort of a gentle, directional blast that a mini fan provides. It is very easy to make such a device with your own hands.

How to make a “personal breeze”

The most famous invention in this area since ancient times is folding fans. They were made from painted paper and ostrich feathers, painted silk and carved bamboo sticks. This device has only one drawback: to obtain the much-desired coolness, you need to hold it in your hand, which is not always convenient. It’s funny to imagine a manager or economist working at a computer and fanning himself.

Therefore, let’s return to our topic and figure out how to provide yourself with a pleasant breeze in the heat. To make a mini-fan with your own hands, you need to solve the following several problems:

1. What kind of rotating propeller will it be, and what material will it be made of?
2. Where can I get a motor?
3. What power source will the device operate from?
4. Is it possible to do without an engine completely?

How to make a mini fan?

Let's start with the simplest thing: making blades. If you take a square from an ordinary sheet of paper, cut it diagonally, leaving about a centimeter intact in the center, you will get a blank for a pinwheel. Then 4 acute angles bend towards the middle and alternately string them onto a nail, having previously stuck it into the center of the workpiece. That's it! It's a pity that this is just a children's fidget spinner.

For a functional and useful design, take 2 CDs or DVDs. One will make the blades, the second will make a stand for the device.

The used circle is cut into several equal parts (from edge to center). To make the process easier, you can hold the plastic over the fire for a few seconds. Each of the resulting sectors of the softened workpiece is slightly rotated around its axis to form a propeller.

What other components are needed to assemble a convenient mini fan? Here is the list:

• Cork from a wine bottle.
• A cardboard or plastic tube for attaching the engine to the stand.
• Small motor.
• Two wires.
• Cable with USB contact or batteries.
• Good glue, scissors, a strong large nail or awl.

Where to get a micromotor

It happens that household bins contain appliances that no one has used for a long time. These could be hair dryers or mixers, blenders and children's cars. Even a motor from an old tape recorder, player or some other mechanism may come in handy. We disassemble the unnecessary device and remove the engine, having first disconnected all the wires.

Since we are making a mini fan, the motor is from an old one washing machine, refrigerator, vacuum cleaner or other large unit will not be suitable due to its size and noise.

Continued assembly of the device

A hole is made in the plug and placed on the axis of the selected engine. To secure the shaft, it is first coated with glue. Then, a propeller cut from the disk is glued to the part of the axle sticking out of the hole in the plug.

Next, lubricate with glue paper straw in diameter and place it on the plane of the second disk. Then install the motor on top and connect its contacts to the terminals from the USB cable. If the propeller spins in the opposite direction when plugged into the computer port, you need to disconnect the contacts, swap them and solder them again.

By connecting a battery to such a device, you can use it anywhere in the room, in the car, near the pool.

Wind blower without engine

How to make a mini-fan at home without a motor? A very popular option is to create a device using small neodymium magnets.

Take the cooler from the computer and separate 4 transformer coils from its body. Instead of copper windings, you need to install and secure the same number of pieces of magnet. Usually they buy neodyms in the form of half-arcs or remove them from an unusable hard drive. The magnets are placed exactly in the places where the transformer windings were removed, that is, along the perimeter of the cooler frame.

As soon as the last piece is secured, the mini fan will begin to rotate. Using permanent magnet technology, it is possible to assemble an almost perpetual motion machine. To stop it, one of the neodymium pieces that replaced the coil is removed from the circuit.

The field of the magnets must be equal in strength to the field of the disconnected coils, otherwise the propeller will not be able to rotate in a constant, stable manner. The poles are placed diagonally, alternating plus and minus.

What to do if none of the above methods are suitable, if there is not enough time or details for homemade fan? In this case, you will have to use a regular factory product.

A USB cooler is a very ordinary fan, however, smaller in size, which connects to the corresponding connector on the computer. You can purchase a ready-made device or make it yourself, which is quite simple; the most important thing is to strictly follow the instructions.

How to make a fan

It is worth noting that this type of technique is not considered particularly powerful, however, practice and numerous positive reviews convince us otherwise. Like any other device, such a fan has certain pros and cons.

The main advantages include the fact that:

• It is compact;
• Multifunctional:
• It's easy to use;
• You can make it yourself.

Among the main types of such fans you can find desktop and compact models. Desktop options They cope well with their main task and can efficiently cool computer parts even if they are used for a long time. USB mini fans are distinguished by their compact size. Their design can be absolutely anything, and in terms of power they are somewhat inferior to desktop models. Compact options are intended only for light cooling of equipment, and desktop models are intended for high-quality cooling of the room and the space around the computer.

This type of equipment has very few disadvantages, however, if a person does not have even the slightest idea about the operation of equipment and electronics, then he does not need to even try to make a fan at home.

In addition, it is worth considering that mini-models cannot regulate the direction of the air flow, and in order to solve this problem, you will have to put in a lot of effort. Working at a computer in summer time, many people suffer from extreme heat, even if there is an air conditioner, since it is not always convenient to turn it on.

To solve this problem, you can make a small fan out of:

• Cooler;
• Motor;
• Small engine.

A homemade fan can also be connected to a car using a USB cable. Such homemade products can be very useful and can be made from unnecessary parts.

Initially, you need to take the old cooler and prepare it. It has two wires: black and red. Approximately 10 mm of insulation must be removed from each wire.

Important! The larger the cooler, the greater the resulting wind flow.

You also need to prepare the USB wire by stripping the insulation on it. The result should be 2 red and 2 black wires. Then connect these wires to each other, taking into account color coding. Everything is well insulated. It is worth remembering that the more insulation, the better. Then attach additional elements to the resulting device, which will act as a means for greater cooling or simply decoration. For convenience, you can install the finished cooler in a shoebox to make it more stable and connect the wire to the computer. You can also make a fan using a motor from a toy or an engine as a base. This will allow for better cooling of the room.

There are many options self-made a fan that will work no worse than a purchased product.

A homemade fan can be made from:

• Disk;
• Thick paper;
• Plastic bottle.

It's very easy to make a small fan out of ordinary ones. computer disks. It can be used to cool a computer or laptop, as well as a user who spends a lot of time working with technology.

To do this, you initially need to prepare such materials as:

• CDs;
• Motor;
• Wine cork;
• USB cable with plug;
• Cardboard.

The motor can be taken from an old toy, for example, a toy car. The assembly process is quite simple. To do this, you need to take one disk and use a marker to divide it into 8 identical parts. Then draw a soldering iron along these lines from the transparent part to the edge and cut with a knife heated on the stove.

Lightly heat the surface of the disk over the flame of a burning candle so that the blades can be slightly expanded. Insert into the hole wine cork, fix and process the edges with hot glue.

Connect the USB cable to the motor. Make a tube out of cardboard, to which you glue the motor, as well as another whole disk, which will act as a stand. When everything is ready, attach the propeller to the motor shaft and fan rod. Secure it with hot glue. Despite the fact that the process of making it takes a lot of time, however, the result will definitely please you. The blades of the disk will rotate, resulting in good cooling. If necessary, you can install a mini flash drive and connect the watch. You can also make a battery-powered fan or power it by connecting a generator. It all depends on your own preferences and knowledge of technology and electronics. Such crafts are quite easy to implement; the most important thing is to do everything step by step and strictly follow the instructions.

Simple DIY fan

You can make your own quite original and stylish paper ceiling fan. This bladeless model is somewhat similar in appearance to a snail, which attracts buyers. However, it works very well and can be easily made by yourself. The operating principle of such a fan is quite simple, since at the base of the device there is a small turbine that helps create air currents passing through the side holes.

To create such a device you will need:

• Computer cooler;
• Old computer case with power and USB connector;
• Switch;
• Thick paper;
• Hot glue gun.

First you need to make the base of the device. For this, thick cardboard or paper is used. The parameters must be taken into account based on the size of the cooler. Integrate a switch and power connector into the housing.

Then cut out two circles from paper that will act as the main part of the fan. They are attached to the body of the product. Assemble the device, fastening all parts with hot glue so that the cooler is located in the central part of the case. Place the wires in a corner of the structure. Then connect the switch and make a test connection to the network. If everything works, you need to attach parts cut out of paper to the body to make the device safe. Thus, the impeller will be located inside the device itself, which is completely safe during its operation. In addition, you can make a hood in almost the same way, however, you should use a powerful working compressor.

Methods: how to connect a cooler to USB

You can quite simply connect the cooler to the USB and you don’t need any specific knowledge or skills to do this.

This will require:

• Computer cooler;
• USB cable;
• Insulating tape.

Initially, you need to carefully strip the wires on the cooler and the USB cable by about 1 cm each. Connect them together by color and if you have a soldering iron, then it’s best to solder them. Then you need to wind the electrical tape so as to completely insulate the wires, otherwise the USB port may burn out when the contacts are shorted. After this, check the functionality of the cooler. In just a few minutes you can get a very good coolant.

How to make a fan with your own hands (video)

Making a fan yourself is not at all difficult. The most important thing is to choose the right materials and components, and also carry out all the steps step by step.

From time to time the need for a kind of fan arises, but small models are relatively expensive. Don’t rush to shell out money, because you can easily make a small fan with my own hands. In terms of efficiency, it is not inferior to purchased analogues, and its creation will require a minimum amount of materials.

Making a fan from a cooler

The simplest way to make a fan yourself is to use an unnecessary cooler (these are used in computers as a cooling system for components).

It is not surprising that this method is the simplest, because a cooler is a small fan. There are only a few things left to do simple steps to give it its final shape and performance.

The cooler itself is quite functional, but you need to prepare it for non-standard way uses:

1. Wires.

If the fan is located next to the computer, a regular unnecessary USB cable will do. It needs to be cut and the insulation removed (the same with the cooler wires):

We are only interested in two wires: red (plus) and black (minus). If there are other colors in the cooler or USB cable, feel free to cut them off and isolate them, since they are absolutely unnecessary and will only get in the way.

1. Compound.

After cleaning, the wires need to be connected to each other (it is enough to twist them tightly together). Don't mix up the colors. This threatens serious complications in the process of creating a ventilator.

A length of 10 mm is sufficient for twisting. If necessary, you can clean most of the wire, this is not scary, but you will have to insulate much more.

1. Safety.

Remember that proper insulation is the key to success and a guarantee that the computer or outlet will not short out. Bare wires should be covered with electrical tape (exclusively in the absence of power), and the thicker it is, the better.

There is no particular point in explaining what threatens the fall of “minus” to “plus”. If the red and black wires come into contact while transmitting electricity, not only the USB cable/port, but also the computer components may burn out.

In principle, computers are not afraid of such moments if they are equipped with protection against voltage surges. But when an outlet in the wall is used, it will be much more difficult to repair the wiring in the apartment. more difficult to create small fan.

Therefore, take serious care to insulate the exposed parts of the wires. Rarely does anyone need unnecessary complications.

1. The finishing touches.

Don't forget that a computer cooler is very light, but at the same time very fast. Even with a voltage of 5 volts, its speed will be quite high. We consider this voltage for a reason: the cooler will do its job perfectly, and the operation will be as silent as possible.

Due to the small size of the device, it may fall due to vibrations. This should not be allowed for the following reasons:

• Such a cooler cannot cause lethal cuts even during operation, but there is no guarantee that the device will not jump up and fly off, for example, into the face;
• if it falls on a non-flat surface (on a pencil, pen, lighter), its blades can be damaged: fragments breaking off at such a rotation speed can cause irreparable damage;
• other unforeseen circumstances.

Therefore, it is important to secure the cooler (with tape, glue) on some more stable surface: a box, wooden block, table.

1. Additional features.

If desired, the finished fan can be updated externally, add a switch (so as not to pull out the cord every time), etc. But attention is also paid to a method that increases the efficiency of the device relatively well.

Just cut it off top part plastic bottle and glue it (with a wide hole) to the cooler frame. Thus, the air flow will be more accurate and directed: the force of air movement will become approximately 20% stronger, which is a pretty good indicator.

At this point, the creation of the fan is completed, and it is ready for full operation.

Disc fan

If the previous option does not suit you, and you want something more complex, then consider self-creation fans from computer disks:

1. Engine.

Since we don’t use a cooler, we need to get some kind of motor that drives the blades of our future device. In fact, you can also use the motor of the already mentioned cooler of the cooling system, but this is too simple.

You should find or buy a motor with a specific part that moves (for example, a protruding iron rod). Since we are making a fan from disks, then the presence of such a rod will the best option. Motors from an old VCR or player are also perfect, because they spin discs and cassettes - just what we need for the spinning propeller in our fan.

You should not use a motor from a washing machine or even an old fan - they are extremely strong. Due to the self-assembly of the structure, it will be very flimsy. In the very first seconds, a strong motor will scatter fragments of blades throughout the room and fly off the base.

If there is a working motor, it must be secured with wires in the previously mentioned form.

Having a running engine in hand, you need to concentrate on the disks, which are the main components of our fan. First of all, cut one into 8 equal parts:

To avoid mistakes during the procedure, you can first mark the disc with a pencil. It is best to use a soldering iron (there will be no sharp edges, it is safer), but regular scissors will also work.

Afterwards, the disk should be slightly heated with a lighter so that the material becomes more pliable, and the wings should be bent in the manner of blades, like conventional fans:

You can do the same with regular plastic bottle:

You need to insert a wooden bottle cap into the center of our propeller. If the size is too big, it can be planed.

1. The remaining parts.

As a center holding the entire structure, you can use a regular roll sleeve toilet paper:

It should be secured in the center of the second disk, which will act as a foundation for the fan. You can place half of the second bushing on top, as seen in the photo, so that the motor is inside it. You need to hang the blades from the disk/bottle on it.

The fan is ready for operation. If desired, you can add decorative elements to make the device look more presentable.

You can see clearly how such a fan is made from a bottle in this video.

Additionally, it should be recalled that important points when creating a homemade fan:

1. To fasten the parts together, you need to use high-quality “superglue”.

Exactly the one that you can’t peel off even if you want to. The entire structure must be as stable as possible and not succumb to vibrations and fluctuations. Be responsible and fill everything you see with glue except the blades and internal parts engine.

1. Take your time.

You risk missing out important detail, and this significantly increases the chances that something will go wrong during the operation of the finished fan. The consequences can be quite serious.

1. Do not use inferior components.

If you don’t need the motor that is used to create the engine, its performance may be in doubt. Make sure it will last for some time and be effective.

Building an engine from scratch is a highly specialized process and requires good knowledge. Make sure that the motherboards are in order, that all necessary connections are sealed well, etc. It is better to check again than to make another fan later.

1. Insulation.

We remind you once again: do not forget about high-quality winding of wires with electrical tape. You should not save it, because short circuits and their repair will force you to sacrifice big expenses. Perhaps even in a monetary sense.

The hand-held fan is quite compact, efficient and does its job well. It is not difficult to do if you take the procedure responsibly and follow the instructions. There are no restrictions on dimensions: if you feel strong, feel free to start assembling a larger fan.