Overview of models of ultrasonic mosquito repellers. Electronic protection against insects and rodents Homemade mosquito generator circuits

The active phase of the life of mosquitoes begins in mid-spring. The first insects wake up in ventilation and sewer rooms apartment buildings and begin to literally terrorize the residents. Moreover, it is not so much a painless bite that irritates, but an unpleasant ear sound that the mosquito makes when it moves. Therefore, many repellers of these insects have been invented.

The bite of even the most seemingly harmless mosquito can provoke unpleasant consequences. mosquito bite- this is not only an obsessive and difficult to stop itching. During intensive combing of the affected area, there is a possibility of entry into the wound different kind infections. And sometimes, these insects are carriers of a terrible disease - malaria.

Fighting mosquitoes and other blood-sucking insects is essential. Mosquito saliva, which it injects into human skin, can contain not only dangerous infections, the female insect is able to lay eggs in human skin. Therefore, the use of reliable protective equipment in the fight against mosquitoes will be the key to your health and comfortable existence.

As their victims, these insects, first of all, choose children's thin skin and too sweaty skin of adults. Mosquitoes are especially active when ambient temperature air is 16 degrees Celsius, but they are powerless at 28-degree heat. In a room with dry air, mosquitoes lose moisture and, accordingly, their activity.

In our time, people have learned to deal with squeaky pests, this is also evidenced by the presence on store shelves of various mosquito repellents. According to their type, such funds can be divided into the following groups:

Fumigants. Liquid, gaseous or solid chemicals, which destroy insects by penetrating their respiratory tract. Such products are strong insecticides for insects and are practically non-toxic to humans and animals. Some species are able to partially cause an upset stomach in humans and an upset of the nervous system.

Fumigants include compounds such as sulfur dioxide and sulfur oxide, naphthalene, ethylene oxide, preparations containing hydrocyanic acid. In stores, fumigants are sold in the form of smoking spirals and insecticide-soaked plates. Such plates are set on fire and the room is treated with smoke. Smoke with a pungent odor is not to the liking of insects, as it has a detrimental effect on them. Experts recommend using fumigants indoors.

Repellents are repellents that come in the form of creams, wipes, lotions and gels.

According to the type of impact, repellents are classified into the following groups:

able to change smell human skin and thus confuse the orientation of insects;
repel mosquitoes and prevent them from landing on the skin.

These funds can also be used as protection for both a whole team of people and one person. On the street, the surrounding shrubs are processed. If this is a tent, then they process the inlets.

There is also a special protective clothing for people who often or constantly have to stay in the mosquito zone. Such underwear is made of a very dense material, which is extremely difficult for a mosquito to bite through.

Certain types of repellents are designed to be applied to hair, clothing, skin of the hands and face, avoiding the area around the eyes and getting into the mouth. It should be remembered that repellents cause a burning sensation on freshly shaved skin. It is worth noting that mosquito creams protect more effectively than fumigants smoking plates. Irrigation skin produced by aerosols containing repellents. Such funds are ineffective in the fight against fleas, flies, bedbugs, ants and moths. Repellents are recommended for hiking, picnics and walks.

Folk remedies. It is not necessary to use chemistry to fight against mosquitoes, you can resort to the use of folk methods. There is a set of certain plants, the smell of which is not tolerated by mosquitoes and other insects:

tomato seedlings. Mosquitoes are repelled by this smell;
cloves, anise, eucalyptus;
cedar oil, valerian, tobacco smoke also repel insects from the house;
if you sprinkle a small amount of carbolic acid in the apartment, then on long time you can forget about the presence of intrusive mosquitoes in your apartment.

Ultrasonic repellers. Effective remedy in the fight against ubiquitous insects.

Mosquito repelling occurs due to the low-frequency sound (up to 7KHz) that the device emits. Such a sound imitates the buzzing of male mosquitoes and scares off females, they drink blood directly. The instrument frequency can be set individually. Electronic repeller mosquito has a short range, and therefore it is better to use it in individual cases, for example, by attaching a keychain with ultrasound to clothing. With such a device, you can walk on the street in the evening, relax in a summer gazebo and not be afraid that blood-sucking insects can ruin your leisure time. When choosing an ultrasonic mosquito repeller on the market, you should pay attention to its range and purpose.

Insect repeller or exterminator

All existing mosquito control devices differ in design, size and range. Some are aimed at repelling insects with high frequencies, while others are aimed at destroying them with an electric discharge or by dehydration.

The main differences between the two types of mosquito repellers are noted below.

Indoor use:

closed space does not give mosquitoes ways to exit, therefore - the repeller must be turned on all the time;
the fighter destroys mosquitoes, after which it can be turned off.

Outdoor application:

repeller. Insects will quickly leave the room;
fighter. At open windows mosquitoes will constantly fly into the room.

Impact on insects:

repeller. Works on both mosquitoes and bugs and spiders;
fighter. It only has a detrimental effect on flies, mosquitoes and other flying.

Working radius:

repeller - up to 100 sq.m;
fighter - up to 1000 sq.m.

Effects on mice and rats:

mice and rats are irritated by the ultrasound of the repeller;
fighter has no effect.

Impact on pets:

pets are scared by ultrasound;
the fighter has almost no effect.

Human impact:

a repeller irritates a person with a hearing aid;
the fighter has almost no effect.

Waterproof:

the repeller does not have such a property;
some fighter models have water protection.

Periodic inspection:

the repeller does not need to be examined;
after a while, the fighter must be cleaned of insects.

Need for repair:

sometimes the electronics of the repeller breaks down. In this regard, it is necessary to purchase a new device;
the fighter's lamp burns out intermittently. It can be easily replaced.

Outdoor work:

mosquito repeller for the street does not lose its protective properties in the open air;
indoor fighter works with great effect than on the street.

Choosing an Ultrasonic Mosquito Repeller

Before purchasing an ultrasonic repeller, it is important to determine the task that the device should perform. Whether it will be protection against insects in the conditions of an apartment or a particular room, or you are going to use the device during street walks.

Each device performs different functions aimed at fulfilling specific goals: repelling mosquitoes, flies or dogs. Therefore, when choosing a product in a store, carefully study the instructions and the main purposes of electronic repellers.

The instructions should also clearly state whether the device is suitable for indoor use, or whether its operation is aimed at protecting against mosquitoes in outdoor conditions.

There are also universal repellers for use in industrial environments. The range of such devices extends to several kilometers. The cost of these devices is much higher than household repellers.

In order not to make a mistake in choosing and provide yourself with the maximum comfortable conditions living in a room without insects, we recommend that you familiarize yourself with its purpose and principles of operation before buying an ultrasonic mosquito repeller.

DIY mosquito repeller

If you do not trust industrial ultrasonic insect repellent devices, and also consider chemical fumigants to be harmful to health, you can easily make a mosquito repeller with your own hands, especially since today this is no longer an outlandish invention, and a diagram of any device can be found on the Internet without difficulty .

Below is a universal mosquito repeller scheme that you can use when creating your own device.

Together with a toggle switch and a protective diode, 13 elements are displayed in the diagram:

resistor ( R1-R5);
variable (R6);
piezo emitter (BQ1);
transistor (VT1-VT2);
capacitor (C1-C2);
diode (VD1);
toggle switch (S1).

The frequency of the ultrasonic repeller is controlled by resistor R6. As a power source, you can use batteries or other storage device with a voltage of up to 12 volts.

The assembled ultrasonic mosquito repeller in the photo looks like this.

Approximate acquisition costs necessary materials to create an ultrasonic repeller are about 420 rubles. Batteries are not included. On the market, you can buy such a device for 1000 rubles.

Here is such a homemade repeller that can be an irritant not only for insects, but also for dogs and rodents.

Benefits of ultrasonic mosquito repeller

Electronic mosquito repellers, which work by spreading high-frequency sound, are becoming increasingly popular today. Compared to traditional repellents and fumigants, ultrasonic devices have a number of advantages, such as:

Small and mobile dimensions of devices.
ultrasonic repeller completely harmless to human health, as it does not contain chemical substances and poisons.
The device is highly effective and guarantees 100% mosquito repellent.
The human ear practically does not perceive the weak sound of the device.
The device is also available in the form of a conventional compact keychain that can be carried everywhere.
It does not kill mosquitoes, but only repels and muffles them.
The device works well in any conditions: both outdoors and indoors.

There is no escape from them. They fly and fly... They itch and itch with nasty zzzzzzzzzzzzz... They bite and bite...

So tired that I decided to dedicate an entire post to them.

First, I propose to see how these vampires drink blood. Pretty little, but you need to know. “Song from this movie” also interferes a little, but does not overshadow the essence of the process ...

And now - a mosquito bite in HD quality, macro photography. Brrr... I never would have thought it would happen like this.

I didn’t find a word for this, they didn’t come up with such an emoticon - something between “tin” and “go crazy, what a nightmare”

Folk methods of scaring away and intimidating mosquitoes

After what he saw, the concept of "I love the world" gave another crack. So I remembered all those folk methods scaring off these bloodsuckers that you have ever used or heard about. About chemical ones later, if nothing from the people helps.

So, what do we need to do so that mosquitoes do not get to us:

Lay out near the windows and hang bouquets over the door fresh tansy or wormwood. After drying, change (they are afraid)
Spread around the room finely chopped bird cherry leaves
Spray in the room valerian
Juice repels mosquitoes basilica, thyme and smell fresh cloves
Before going to bed, you can drip a tiny drop at the head of the bed. camphor oil
Draw multiple dots anise, cedar, clove or eucalyptus oil on exposed parts of the body.
Or drop a drop of the above oils on a light bulb and then turn on the light. Fumigator, however!
Good for scaring off
They say that mosquitoes do not like flowering pelargonium And rosemary
It is advised to put a fresh one on the window in the country house tops of tomatoes, flowers and leaves black elderberry or lavender, leaves mint, catnip lemon, medicinal lemon balm. And a pleasant aroma in the house, and mosquitoes should fly to the neighbors)
Dilute in a small amount of water vanillin, before going outside, wipe your legs and arms (I generally just “wash” all open parts of the body with my hands) Helps!
"perfume" cologne "Gozdika". All childhood passed hand in hand with this smell - it probably helped if everyone splashed it;)
You can do it yourself make lotion: clove oil - 1 part, cologne - 5 parts, alcohol - 25 parts
Make a decoction of wheatgrass roots(boil a handful of chopped roots in 1.5 liters of water) and treat their face and hands (here it is - another property of weeds !!!)
Rub the exposed parts of the body with dioecious juice nettle
Wipe exposed parts of the body lard (Introduced… okay))
If you have to sit by the lake (river, estuary) fishing, then good remedy- apply birch tar war paint on the face, neck and hands. And be sure to wear a T-shirt made of bulky yarn on the body, and on top - a loose shirt with a high collar and tightly buttoned cuffs.
Old Ural way: dry horse manure set fire to tin can, let it flare up and put it out. Fumigate country rooms with smoldering smoke, close doors and windows tightly, and ventilate after 10-15 minutes. For three days, the hungriest mosquito will not fly into a smoky room! Do not be afraid, there is no special smell from manure either, but if something is felt, then remember Maurice Gerald and Louise Poindexter)) Ndaaaa ... for the youth I’ll clarify: these are the heroes of Mine Reed’s novel “The Headless Horseman” ... Maurice was a mustanger, hence the suggestion that the smell of the most romantic feelings horse manure didn’t interfere in any way ... Uff ... whoever needs it will understand ...
You can throw some plants into the fire in the country chamomile mosquitoes don't like it either
Also repels mosquitoes smoke from the cones(pine and spruce) and needles juniper. (By the way, you need to try thuja twigs! Who will try - tell me, how is the result ???)
Southerners are advised to set fire willow twig with leaves or lavender shoots
I also heard that mosquitoes are afraid of smoke from burning leaves. black elderberry

But mosquitoes like the fresh smell of pine and spruce, so do not hide from them in the forest!

Mosquito trap

As I understand it, everything read can be safely forgotten, because that mosquito trap, which we can make in 10-15 minutes, will reliably protect us from night vampirics without any additional conditions :)

We look, we delve into, we rejoice at the people's ingenuity and the remarkable mind of our compatriots!

And for those who still did not have time to read and remember everything while watching the video, I duplicate it with quietly standing letters.

How to make a mosquito trap: instruction diagram

The shelf life of the trap is up to 2 weeks. It can be used both indoors and outdoors.

This is how the anti-mosquito monologue turned out. By all the rules of dramaturgy - from a terrible beginning to a happy ending))

I would be grateful for the replenishment of the piggy bank of folk useful "anti-mosquito" tips. For this will mean that mosquitoes are more and more afraid of herbs, oils, smokes and colognes ...

May their proboscises bend and their itching wings weaken!
Let them have only boys!

You can cope with a large accumulation of mosquitoes at home or on the street with the help of special devices - ultrasonic flow devices that are capable of create a field with your waves where insects don't want to go. The main thing to pick up enough best options which would suit your situation perfectly.

The most popular ultrasonic mosquito repellers and how they work

Yes, for home use For example, you can use devices that work from the network. If you are going on a hike or to rest in a camp in the forest, then devices will help you, battery operated. However, the differences may lie not only in this, but also in other characteristics. Consider a few examples of devices that emit ultrasound.

Barely visible to the human ear, the Tornado device (OK 01) is an excellent tool to without any addition of synthetics and chemicals prevent the breeding and accumulation of mosquitoes. Technical and other possibilities include following characteristics such a device:

The form of production is an electrical appliance that emits ultrasound.
Power Supply Versatility – from batteries and electricity.
The intensity of the ultrasound can be adjusted in frequencies from 4 to 40 kHz.
Impact radius - 50 sq.m.
The total weight of the device is 250 gr.
Manufacturer - Russia.
Average price - 1500 rub.

Manufacturer's warranty is 1 year. The convenience of the device, unlike others, is universal power supply. You can power it from the mains, go to nature and supplement it there if recharging ends, but from batteries. The device can even work in 50-degree heat.

The peculiarity of such a keychain as "Typhoon" LS-100 lies in its supply of sound waves - they can fluctuate from normal sound to ultrasonic threshold. Both are capable of repelling insects throughout the entire time that the device will work. The features of the device are as follows:

Produce it in the form of a keychain, which is very comfortable to wear on a belt or belt.
The frequency of sound waves can be adjusted.
Impact range up to 80 sq.m.
The weight of the keychain with batteries is 0.15 kg.
Approximate price - 450 rubles.

The mechanism works quite well temperature regime from -40 to +80 degrees.

Repeller of the Belgian brand "Weitech WK0029" quite compact to take it on the road. Its body is very convenient for setting up in a tent or outdoors. No additional chemicals are needed for its operation. The main characteristics include:

The release form is an electronic device.
Warranty - 12 months.
Total weight - 110 gr.
Safety for people and animals is guaranteed.
The intensity of ultrasonic radiation can be adjusted.
Approximate cost - 1600-2190 rub.

There is a light indicator, which shows when the device is in operation and when it is off. The device is powered from batteries type "AA" in the amount of 3 pieces, which fully ensures the operation of the device for 3 months.

ECOSNIPER ML-338R

Reliable tool can be worn not only on the belt, but also in the pocket, on the ankle or just put next to the tent or hammock. TO technical specifications such a device:

Produced in the form of a keychain.
Action range - 1.5 m in open space and up to 10 sq.m. indoors.
The duration of continuous operation of the device can reach up to 8 hours.
Approximate cost - 690 rubles.

With this device, you can freely be even near bodies of water in evening time without fear of attacks blood-sucking insects.

Keychain MR 430

In addition to equipment, when equipped with ultrasonic repellers, key chains can also be used, working on the same principle as devices. Their characteristics include the following parameters:

Issued in the form of a keychain with a clip.
Fastens perfectly to a belt or to belt loops.
Functioning from one AA battery.
The manufacturer gives a 12-month warranty to the buyer.
Security is high.
Action radius - 10 sq.m.
Price 700 rub.

Nothing further needs to be configured. Similar characteristics can also be found on the bracelet of the same brand. The difference will only within the range on blood-sucking insects maximum 8 sq.m. But it can be worn on the hand, as Wrist Watch and use miniature CR2032 batteries.

The principle of operation of the ultrasonic device

Experts have repeatedly proven that among mosquitoes a person is attacked only females that have already been fertilized. The device makes a sound very similar to the squeak with which males attract and call females. However, already fertilized individuals do not need such a sound and it affects them negatively. Moreover, based on research, fertilized females will already perceive such an ultrasound as a danger signal. Adults scatter in panic, as soon as they feel the wave of the device. That is why they will never fall into the field of action of the device. Such waves do not produce any harmful effects on people at all.

Every year we buy a lot of products that can protect us from mosquitoes. These are all kinds of creams, ointments, sprays, sockets, spirals, etc. However, all this costs a lot of money. To save a little, we suggest you make a mosquito repeller yourself from improvised means. Without spending a lot of time.

For the first version of the repeller, we need:
- matches;
- a metal plate;
- plate from mosquitoes;
- round flat candle;
- pliers.

The first option is well applicable at home or on the street in the complete absence of wind.

We take a metal plate and bend it with pliers on both sides at an angle of 90 °. So that we get a kind of street bench without a back.

Then, on one side, we again bend one edge. We will get an inclined plane.

After that, we put our curved metal plate on metal case a lit candle and put a plate from mosquitoes on top.

For the second version of the repeller, we need:
- a box with a metal lid;
- a metal plate;
- ferrite ring:
- plate from mosquitoes;
- round flat candle;
- pliers;
- matches;
- glue gun:
- bolt and nut.

The second method can be used outdoors even during the wind.

We take a metal plate and make a small hole at one end. Then bend it with pliers. After that, we make another bend on the same side so that our mosquito plate fits on the rest of the plate. Once again we bend the end of the plate so that it fixes it.

In the metal cover in the middle we cut out a round hole, as well as another small one at the edge.

Now we need to glue the ferrite ring on the cover, aligning big hole. As such a ring, you can use a narrow piece of any plastic pipe.

We glue the metal stand from the candle inside the box body exactly in the middle. We insert the candle, close the lid and check how accurately the candle wick falls into the center of the hole. While the glue is not completely dry, we center the candle body.

Then we take our metal plate, insert a bolt into the hole and fasten it to the cover with a nut.

After that, light the candle and close the lid. If the candle goes out, make a few holes in the lid.

Do-it-yourself ultrasonic mosquito repeller can be made independently, guided by the scheme. Requires minimal knowledge of physics, a little time and effort.

Operating principle

Interesting!
The mosquito repellent device produces sound waves like the fluctuations of a dragonfly's flight, bat or repeats the sounds of the male. For humans, females are especially dangerous. They are to give life to new offspring. After fertilization, females try to avoid meeting with males, so they are scared away.

Calculate what kind of ultrasound will produce homemade device not easy, but according to users, the circuit of the ultrasonic mosquito repeller is correct and effective.

Circuit example

To make an apparatus that produces sound of a certain frequency is within the power of physicists. But using their drawings, it will be possible to make an effective apparatus within an hour.

The electronic circuits of the ultrasonic repeller show the chain along which the components of the device must be connected.

On the chip, the designations mean the following:

R1-R5 - resistors direct current with a power of 0.25 W;
VD1 - diode to protect the device from short circuit, incorrect connection;
BQ1 - emitter producing ultra-frequency sound;
VT1-VT2 - bipolar transistors;
R6 - variable resistor;
C1-C2 - capacitors;
S1 - toggle switch for turning on, off.

All components of the drawing are located on printed circuit board, you will need batteries or batteries to use for the street. Power supply with voltage up to 12 V.

You can adjust the sound frequency using a variable resistor R6. A homemade repeller is used indoors or outdoors.

You can use the K555LA3 chip with good frequency characteristics, low consumption electrical energy. There are only 4 parts in the diagram.

The designations are similar. Assembled on a breadboard. The signal is generated by the capacitor C1, if you need to change it, adjust it with a variable resistor R6. An ultrasonic repeller is made in a few hours with minimal knowledge of physics.

On a note!
Flaw homemade appliances lies in the minimum range, a narrow range of generated frequencies.

If someone is interested in whether it will work or not, you can spend a few hours of your free time making an ultrasonic repeller. But, it is much easier to buy a ready-made device for affordable price with a similar, and even better effect.