For beginners, an electronic mosquito repeller circuit. Overview of models of ultrasonic mosquito repellers

A mosquito repeller is one of the most important items in summer period. Bloodsuckers during their activity create a lot of discomfort. Sometimes getting rid of them is not so easy. In late spring and early summer, the topic of repelling annoying insects becomes especially relevant.

To solve the problem, you can use modern purchased options or make a device for expelling bloodsuckers on your own. This does not require any specific skills. You can also use home remedies.

To date, there are many methods of repelling insects. If we are talking about sprays, then it is advisable to irrigate clothing with them, but not to use directly on the surface of the skin.

Despite the assertion of the majority of promotions about the safety of such products, every precaution should be taken so as not to provoke an allergic reaction.

Mosquito repellent creams should also be used with caution, especially when it comes to children. Of course, all means for repelling blood-sucking insects are harmful to humans to one degree or another, so if you wish, you can also use folk methods which are no less effective.

Modern mosquito repellers

Currently, mosquito repellers are famous for their diversity.

The most popular tool that is most often used at home are plates. The principle of their action is simple.

When placed in a special device, they heat up. A specific aroma begins to emanate from the plates, which bloodsuckers cannot tolerate.

Analogues of plates are liquids with identical action. In nature, such means are ineffective, as they work on electricity. Most people, when going on vacation, prefer to take spirals with them, which, when ignited, emit a smell that repels mosquitoes.

On the modern market appeared ultrasonic devices to protect against mosquitoes, which are absolutely harmless to both adults and children, but are detrimental to female bloodsuckers.

After all, they attack people. The principle of operation of ultrasonic devices is simple, but at the same time unique. The sound waves emanating from the device are similar to the squeak of a male mosquito, which is so feared females. In this case, the females quickly leave the place of deployment. For more information about the action of the plates, see this video:

Such sound vibrations are absolutely not captured by the human hearing aid. Of course, the cost of such devices is sometimes significant, but they are very convenient to use. They can be used both at home and outdoors.

Especially it is necessary to carefully protect children from insect attacks. For these purposes, do not forget about the banal mosquito nets.

To make mosquitoes forget their way into a house or tent, you can resort to one trick. This type insects do not like the smell of eucalyptus. Therefore, in the nearest pharmacy you should purchase a similar essential oil and lubricate the mosquito net with it.

Eucalyptus extract is safe and non-toxic. In the absence of hypersensitivity of the skin, it can be applied pointwise on the body, avoiding the area around the eyes and mucous membranes.

Do-it-yourself scarers

To save money, you can make a mosquito repeller with your own hands. This will require a conventional burner and camphor, which must be heated. When specific ethers evaporate, all uninvited guests will quickly leave the room.

Any kind of smoke will scare away blood-sucking insects

Tobacco smoke is the #1 mosquito repellent. However, it is not always possible to use such a simple tool. When all family members are smokers, then this method acceptable. However, if there are children in the house or in nature, then this method can be harmful to health. Instead, you can use valerian, which will keep annoying insects from ruining your mood.

One of the most popular and safe means that replace scaring devices is carnation.

You will need its small buds, from which you can make a decoction or make a universal repeller. To do this, take 1 tbsp. l. spices and pour it with 250 ml of water. Bring to a boil and turn off after a couple of minutes. Then the resulting broth is cooled and sprayed with clothes, skin and bedding. Mosquitoes won't bother you for sure. For more information on how to repel mosquitoes, see this video:

To repel insects, it is not at all necessary to use modern mosquito exterminators. The same cloves should be used, but in combination with lemon. To get a reliable fumigator, you will need to cut a citrus in half and insert spicy buds into it. Insects will avoid this smell.

Additional repellers

If the smell of cloves is not to your taste or is simply unpleasant, then you can use other means. To do this, you need a bag of vanilla.

The powder will scare away not only mosquitoes, but also midges, the consequences of bites of which are much more dangerous.

First of all, they take a glass of water and dilute 1 tsp in it. vanillin. Everything is thoroughly mixed, sprayed on clothes and treated with leather. Vanilla smell will not allow insects to the body. You can also prepare a cream based on vanillin. It will take a small amount to mix with baby cream and apply to the skin. Such a tool is only suitable for treating the body.

Mosquitoes can't stand the smell of vanillin

So that mosquitoes do not bother, you can prepare a special decoction. You will need wheatgrass, valerian and wormwood. All 3 ingredients are placed in a metal container in an amount of approximately 200 g and pour 1 liter of water. Boil 30 minutes. After that, the liquid is filtered, the skin is wiped with it and clothes and bedding are treated.

One of the simplest blood-sucking insect repellents is the well-known Asterisk balm, which is applied pointwise to open areas body.

When it comes to young children, it is better to treat only clothes with a balm so that an allergic reaction does not occur.

If you don’t want to waste time on inventions, then you can buy a ready-made clove-based cologne or essential oil, which is recommended to lubricate exposed areas of the body and clothes.

Thus, the mosquito repellent device can be replaced with cheaper ones.

Creams or special devices. It is quite possible to make an ultrasonic mosquito repeller with your own hands. This special device has many advantages and can be various shapes, type, design.

The benefits of repellers

A homemade repeller is easiest to assemble for radio amateurs or people who have an understanding in modern radio components. Although the simplicity of the design makes it accessible even to an inexperienced user.

Advantages of the device:

1. Duration of use. It can be used repeatedly without loss of quality.
2. Cheapness. The cost of such a device is not much different from a purchased cream, but much cheaper than buying a ready-made one.
3. Efficiency.
4. Numerous positive reviews users who have personally experienced repellers say that the device really works.
5. Mobility. When creating a device, you can immediately set its dimensions. As a result, it is possible to obtain a repeller in various sizes for mobile use.

It is not difficult to make such a device, the most important thing is to choose the right circuit.

Application possibilities

The mosquito repellent device works on the principle of how insects perceive various sounds. When assembling ultrasonic models, microcircuits of a special frequency are used. It is not audible to humans, but extremely unpleasant for mosquitoes.

For assembly, only simple elements, which can always be purchased in specialized stores at an affordable price. The design is based on electronic circuits. They are the heart of the device. You can use one of the most common k555la3 microcircuits or buy another board, make it yourself by etching the tracks on a special canvas.

The PCB manufacturing process includes the following steps:

1. Print a pattern with tracks.
2. Etch a workpiece on a microcircuit in a solution of ferric chloride.
3. Clean up.
4. Cover with gel flux.
5. Tin.

After that, you can start soldering the mosquito repeller according to the chosen scheme.

The drawing of the ultrasonic invention also includes the following elements:

1. Source of power. They can be a regular battery.
2. Sound source.
3. bipolar transistors.
4. Capacitors.
5. variable transistor.
6. Toggle switch to bring the device into operation.

The figure shows a primitive diagram of an ultrasonic mosquito repeller.

1. VT1 - MP36 - MP38
2. VT2-MP40-MP42
3. R1-SPZ-b, SPO 100 kOhm
4. R-100kOhm
5. R -10 kOhm
6. C1. - 3300 uF
7. IN 1. - telephone capsule.

The radius of action of the repeller, made according to the specified scheme, is about 1 meter.

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 similar to the vibrations 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 - DC resistors 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. Going to 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!

The disadvantage of home-made devices is the minimum range, a narrow range of frequencies generated.

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 similar, and even more best action.

Which evaporate the repellent from the liquid or special plates. Once in the zone of evaporation of the toxin, the mosquito will not live even a few minutes. The poison is to blame, which penetrates through the spiracles on the abdomen of the insect and paralyzes its central nervous system. The mosquito loses the ability to attack a person, fly and breathe.

In open spaces where people and animals suffer from mosquito bites, fight with help fumigators not efficient. For these purposes, powerful installations against mosquitoes have been developed, which are placed on the site to protect against insects. During operation, the device emits carbon dioxide and an odorous substance reminiscent of the smell of a person. A powerful trap attracts and destroys mosquitoes.

Overview of popular and effective models of mosquito exterminators

The mosquito repellant is specially designed to attract mosquitoes to the site permanently and reduce their number in the environment, preventing the growth of the population. During the day of operation of the device, several thousand mosquitoes are destroyed. Among the dead insects big number females that lay up to 150 eggs every 2 days.

And now it’s worth moving on to an overview of the most popular and effective traps mosquitoes for large open areas running on HC gas. Installations against mosquitoes are designed to protect the territory from 40 to 50 acres (4000-5000m2). To select a model, the consumer should decide in advance and pay attention to the power source of the trap, equipment and the complexity / cost of maintenance.

Mosquito Magnet Independence

The system was developed and manufactured in the USA. It works autonomously, due to a gas cylinder with propane, which allows its placement in remote areas from a source of electricity.

The total weight of the device (without cylinder) is 17.4 kg. The platform is equipped with wheels for easy rolling of the unit on the ground. The device attracts insects with a cloud of carbon dioxide, the same as a person emits when breathing. Additionally, an Octenol tablet is installed, which releases into environment odorous particles, reminiscent of the smell of the body of a person and an animal.

Reacting to the smell and carbon dioxide, the mosquito flies up to the trap and is sucked in by a powerful stream into the system. Killing of insects is carried out electric shock, which is fed to the mesh membrane. Dead mosquitoes accumulate in the drive. Its maximum filling is possible after 3 weeks, so it is recommended to check the contents of the collection for cleaning.

Main characteristics:

• device weight without gas cylinder - 17.4 kg
• large coverage area of ​​4500 m2 (up to 45 acres);
• quick start (by pressing one button);
• independent energy source- a catalytic generator, the charge of which is enough for period from 3 to 5 months work
• various operating modes allow the device to work on one propane cylinder up to 30 days
• consumption of Octenol tablets - 1 tablet / 21 days (3 pieces included) - the cost of spare tablets is 6300 rubles
• The cost of the device is from 55,000 rubles

In addition to the installation, a storage case is offered. Interchangeable cartridges and bait tablets.

SkeeterVac SV-3501

Installation from mosquitoes, which is most often chosen for giving. The device looks unwieldy and has smaller dimensions compared to the previous version. It works on the same principle, releasing a cloud of carbon dioxide into the environment. However, unlike the previous device, here insects are attracted by carbon dioxide and stick to a special adhesive tape.

Main characteristics:

• device weight -17 kg;
• does not require a network connection
• coverage area - 40-45 acres.
• Overall dimensions of the package - 50x50x65 cm, assembled: 105 by 40 by 40 cm.
• Adhesive tape consumption - 1 tape is enough for 10-14 days (depending on the insect population)
• octenol consumption - one cartridge for 30-50 days (the cost of a spare cartridge is 1800 rubles / adhesive tape - 900 rubles)
• Propane consumption: about 1 liter per day
• The cost of the device is 38900 rubles

Reviews about the installations for mosquitoes are so different that it is difficult to decide to purchase this device. Some consumers claim that the device is completely useless and does not affect the number of insects in the areas, other reviews confirm the benefits of these devices.

The fact is that although the device is ready for use immediately after purchase, it is necessary to adjust its operation so that enough carbon dioxide is released to attract mosquitoes. Important point- pick up optimal location to set a trap for effective work. And, of course, do not expect instant results. It will take some time to evaluate the performance of the device. When purchasing a mosquito trap, ask the seller about the possibility after-sales service and device settings.

Review:

“On the eve of summer, we took care to buy mosquito traps. The choice was long. Considered not only specifications device, more interested in the price and reliability of the unit. Settled on the modelSkeeterVac SV-3501". I liked its design and the after-sales service offered. The result was noticed after 2 weeks. Mosquitoes have become much less, which pleases. We hope that soon we will be able to forget about them altogether.”

Marina, Moscow region

Video - Mosquito Magnet vs SceeterVac - which is more effective?

The previous two exterminator devices Mosquito Magnet and SceeterVac operate on a propane-butane mixture and are completely autonomous, the traps below use CO2 (carbon dioxide) in operation and require constant power from a 220 V network. Electricity for their operation is generated by the operation of a catalytic gas generator.

The country of manufacture of the previous models is the USA, given below - Russia.

No mosquitoes KRN-5000 Turbo PRO

Russian development of the trap, which takes into account all factors for effective fight with flying bloodsuckers. The model was equipped with a powerful engine capable of sucking not only small mosquitoes, but also large flies and horseflies into the structure.

Optimized the operation of the mosquito trap due to several operating modes that allow you to change the retracting force depending on weather conditions and time of day and save consumables.

Model "Komaram.net KRN-5000 Turbo PRO" is made of a monolithic rack. This allowed to increase the strength of the structure, and reduce the weight of the unit for greater mobility. The manufacturer took care of the consumer by improving the high-voltage grid to kill mosquitoes. Now there is no need to clean the device, all mosquitoes that get inside the device die either from an electric discharge or from dehydration.

Order now for 39 900 rubles

Main characteristics:

• The device is powered by 220V 50Hz.
• impact area 50 acres (5000 m2);
• The consumption of the Nonanal bait is 50 days with round-the-clock operation or a whole season with the trap operating at night.
• Gas consumption - 40 L bottle - 120 days / 10 L bottle - 33 days
• The weight of the trap without the balloon is 24 kilograms.
• Operating temperature range — +10…+50 °С.
• the intelligent system allows you to automatically change modes when increasing / decreasing mosquitoes in the area;
• "floating" temperature regime, which simulates being on the territory of a person or animal;
• Life time— at least 3 years / 12 months manufacturer's warranty
• Cost - from 45 000 rubles

At correct operation trap "Komaram.net KRN-5000 Turbo PRO" eliminates bloodsuckers 2 weeks after installation and operation. The model is equipped with a carbon dioxide cylinder, which is not dangerous when used. The backlight sensor helps to reduce its consumption at night.

The carbon dioxide cylinder must be purchased separately. At the choice of the consumer, the device can be equipped with a 10 or 40 liter cylinder. To connect, use an adapter (included). Large capacity enough to operate the trap continuously for 4 months. There are no problems with filling the cylinder with gas, many companies provide a similar service. A bottle of Nonanal bait is enough for 50 days of round-the-clock use, in an economical mode of operation of the trap for the whole season. No special skills are required to change the vial.

The device is powered by the network. The manufacturer guarantees trouble-free use of the unit for 12 months.

ElectroFrog Security

Device from Russian manufacturer. The trap attracts bloodsuckers by the release of heated carbon dioxide and odorous substances of the attractant Octenol. The operation of the device is carried out when connected to the mains.

• System equipped with a timer. you can independently set the time to turn on and off the device (depending on the activity of insects)
• There is a pressure sensor for monitoring carbon dioxide in a bottle.
• Built-in protection against"Jumps" voltage in the network

The weight of the trap without a cylinder is 14 kg, the curb weight is 25 kg.

Main characteristics:

• Coverage area 50 acres (5000 m2)
• power supply - network 220V / power consumption - 150W
• weight with stand (without cylinder) - 18 kg
• low noise level (65 dBA);
• Bait - Food or technical purified carbon dioxide
• Gas consumption - 10-15 days on one cylinder 10 l (can be completed with cylinders of 10 or 40 liters)
• Exterminated insects: mosquitoes, midges, gadflies (all blood-sucking)
• there is no need to clean the electrical membrane;
• Cost — 40 000 rubles

When choosing an ElectroFrog Security trap, the consumer should take into account that a carbon dioxide cylinder is purchased for a fee, it is not included in the kit.

And the last device in our review -

Mosquito trap ANS-A6

The device is designed to protect the territory of 20 acres. The trap uses carbon dioxide and the attractant Octenol as bait. The device requires power supply from the 220V network. Made in China / Brand originated in the USA

Order now for 21 990 RUB

Main characteristics:

• light weight (5.5 kg);
• informative LCD display;
• 2 operating modes - automatic: setting the on / off time. Manual setting of carbon dioxide consumption.
• Main working element: Dietary carbon dioxide (CO2) / additional use of an attractant is possible
• Gas consumption - Cylinder 10l - 7-15 days of work
• Installation recommendation: 5-10 meters from the protection zone.
• The cost of the device is 22,000 rubles