Ultrasonic gun at home for a person. Do-it-yourself ultrasonic gun. Assembling an UZG circuit to scare away dogs

It has always been believed that my home is my castle. However, there are moments when it is simply impossible to be in your own apartment.

A lot of things can cause inconvenience: noisy renovations in a neighboring apartment, very loud music and, of course, a drunken brawl from above every night for a long period of time.

The noise that continues around the clock makes you immediately look for at least some solution to eliminate it. However, not everyone knows how to overcome noisy neighbors.

The federal law states that the noise level should not exceed 40 dB from seven in the morning to eleven in the evening, but at night this figure should not go beyond 30 dB.

If we take at least some comparison, then all sounds should be three times quieter than a car alarm. But still, do not forget that in each region amendments to this law may be made.

If the norms are violated by users of residential premises, all actions by unscrupulous neighbors pass into the category of an administrative violation.

However, it happens that while laws exist, they are unfortunately not enforced. In this case, there are a couple of options to solve the problem.

When very loud music is a hindrance, you can try to negotiate peacefully. This method is undoubtedly considered the best at that moment, if all the participants in this conflict are in an adequate state.

You can explain that you have a small child in your apartment and he needs to rest during the day, but in the evening he should go to bed at nine. We can compromise and understand each other.

In the event that peace negotiations did not go in favor, you can go to the district police officer, who is supposed to sort out this situation at the request of the applicant. If a drunken brawl occurs in a neighbor's apartment, then it is best not to get into it, since there is a possibility of suffering. In this case, law enforcement agencies should intervene, who will immediately arrive at the place on call and eliminate the conflict.

Neighbors doing renovations

All repairs are a separate issue. Carrying out work using a drill, a person honestly thinks that he is not doing anything wrong, since working hours, and therefore the law is not violated.

But in some cases, this kind of noise can also disturb an old woman who has a migraine and wake up a small child. In this case, you cannot complain, since the law is not actually violated.

If a person is well-mannered, then you can independently decide the time for him to carry out the noisiest repairs, which will make it possible for this period of time to go for a walk with the child or not go to bed at this time, but simply transfer it.

Request for help

So what to do if the noise continues, but it’s impossible to agree? It should be noted that the arrival of the district police officer often simply does not give the results that we would like. Very often, this moment depends on how corruption flourishes in this area and, of course, on the personality of the violator.

In the event that the district police officer does not take any action on the application or nothing changes after his arrival, you should contact the prosecutor's office directly, which monitors how the laws are observed. There must be sorted out and the answer will come to you in writing.

If they did not help here, then only the court remains. If a lawsuit is filed, then there must be strong evidence that it is really impossible for you to relax in your apartment because of the noisy neighbors.

How will the request to the housing office affect?

There is another instance to which you can apply with a complaint about especially noisy neighbors from above, who just want to annoy. You should go there if there really is no illegal action, which is a brawl.

For example, a dog is constantly barking somewhere, or just loud music from a neighbor upstairs. In these cases, it is permissible to apply to the housing office. As a rule, employees of such an institution say that it is possible to have some kind of conversation, but it is not a fact that an apartment will be opened to them. So it's easier to call the police.

However, the police officers are not in a hurry to help either, since their exit position is set up only for illegal actions, and loud music is the work of the ZhES. And when the circle is closed, you should think about alternative methods.

There are exceptions

There are clauses in the silence law that may not be subject to time limits.

Items such as:

• A small sick child is crying;
• A cat meows or a dog barks;
• Church bells are ringing;
• Holding events and holidays on the street;
• Noisy rescue or emergency work.

Consequences for violators

After the first warning was presented, but there was no effect, an administrative fine is further provided. Its value will depend only directly on who was the cause for concern - an individual or a legal entity.

In addition to the law, it is said that those who like to put an amplifier on a balcony can be attracted to pay a fine. The law has clear criteria for breaking silence, for which you will have to pay a fine:

1. Construction and repair work at night;
2. Use of pyrotechnics and fireworks;
3. Listening to loud music when using amplifiers;
4. Whistling, loud screams and more.

Self help

In the event that no methods no longer help to deal with noisy neighbors, you can simply make repairs using materials with increased soundproofing properties.

However, this is not always the way out. And yes, it's quite a hassle. You can try to use infrasound.

What is infrasound?

Infrasound is called elastic waves, which are analogues of sound waves, but with lower frequencies that a person cannot hear. The upper limit of the infrasound range is 16-25 Hz.

So far, no lower limit has been found. In fact, infrasound is present in everything: in the atmosphere and in forests and even in water.

Actions of infrasound

Infrasonic actions occur due to resonance, which is the frequency of oscillation of a large number of processes in the body. Alpha, beta and delta brain rhythms also occur on the purity of infrasound, as, in principle, the heartbeat.

Infrasonic vibrations can coincide with vibrations in the body. Subsequently, the latter are amplified, due to which the work of some organ fails. It can come not only to injury, but also to rupture.

The frequency of oscillations in the human body varies from 8 to 15 hertz. At a time when a person is exposed to sound radiation, all physical vibrations can fall into resonance, but the amplitude of microconvulsions will increase many times over.

Naturally, a person will not be able to understand the feeling of what affects, because the sound is not heard. However, there is a certain state of anxiety. If there is an extremely long and active effect of a special sound on the entire human organ, then there are ruptures of internal vessels, as well as capillaries.

Typhoon, earthquake and volcanic eruption emit a frequency of 7-13 hertz, which calls for a person to quickly retreat from the place where disasters occur. Infrasound and ultrasound can very easily drive a person to suicide.

A very dangerous interval of sound is a frequency of 6-9 hertz. Very strong psychotronic effects appear most of all at a frequency of 7 hertz, which is similar to the natural oscillation of the brain.

At such a moment, any work of a mental nature simply becomes impossible, since there is a feeling that the head can “burst like a watermelon” at any moment. If there is not a strong impact, then it just rings in the ears and a feeling of nausea appears, vision deteriorates and the person succumbs to unaccountable fear.

A sound that is of medium intensity can upset the digestive organs, the brain, give rise to paralysis, blindness and general weakness. A strong impact damages or completely leads to cardiac arrest.

ultrasonic emitter

You can independently build an infrasonic emitter that will not do any harm to the human body, but the unwanted neighborhood will become less noisy after its use.

Ultrasonic design

The scheme is as follows: the simplest generator for creating oscillations is started from the coil, which is available in the speaker for sound. The relay is needed to start the capacitor. If you push the speaker to produce sound, it will completely turn off.

Next, the circuit begins to work at the resonant frequency of the coil. You also need transistors that will be low-frequency and produce a certain sound power. A nine-volt power supply from a non-working modem is used as power.

Resistors R2 and R4 are volume controls. The circuit works on pendulum resonance. However, all the electrics take about two watts, but the output is about twenty, so the speaker does not work without them.

Any woofer will work. A prerequisite is to install it in the case, since in this case an acoustic “short circuit” is excluded. In the form of a body, a saucepan fits perfectly. At the speaker for sound, when using an electric jigsaw, the ears are cut off, then it is stuck into a bucket and glued around the perimeter with a “moment”.

Setting up an infrasound device

Initially, the entire system is assembled on a table and all electrics are fully checked. Initially, this must be done without a weighting agent. After turning on, the speaker should begin to buzz at the resonance frequency.

If it doesn’t work out right away, it’s worth working with the capacitance of the capacitor. Then the whole device is assembled in a saucepan, all the cracks between the speaker and the case are glued with a “moment”, and then the weighting spiral should be glued with glue and glued to the speaker cone for sound.

If it is not possible to find a normal chilimeter, you should set the ultrasound frequency to 13 Hz using an oscilloscope and a low-frequency generator according to the Lissajous figure. Then the power is turned on to test for a few seconds to see what happens. Then the device turns off and the cutting of the weighting spiral begins until a double Lissajous is obtained.

Each of us has repeatedly heard the expression "ultrasound" - in this article we will consider what it is, how it is created, and what it is for.

The concept of "ultrasound"

Ultrasound is mechanical vibrations that are much higher than the frequency range that the human ear hears. Oscillations of ultrasound are somewhat reminiscent of a wave similar to light. But, unlike light-type waves, which propagate only in a vacuum, ultrasound needs an elastic medium - a liquid, gas, or any other solid body.

Basic parameters of ultrasound

The main parameters of an ultrasonic wave are considered to be the wavelength and period. The time it takes for a complete cycle is called the period of the wave, it is measured in seconds.

The ultrasonic emitter is considered to be the most powerful generator of ultrasonic waves. A person cannot hear the ultrasonic frequency, but his body is able to feel it. In other words, the human ear perceives ultrasonic frequency, but the part of the brain responsible for hearing is unable to decipher this sound wave. A high frequency is unpleasant for human hearing, but if you raise the frequency by one more range, then the sound will completely disappear - despite the fact that it is present in the ultrasonic frequency. And the brain is making efforts to unsuccessfully decode it, because of this, a person has a terrible headache, dizziness, nausea and other not entirely pleasant sensations.

Generators of ultrasonic vibrations are used in all areas of technology and science. For example, ultrasound can not only wash clothes, but also weld metal. In the modern world, ultrasound is actively used in agricultural machinery to repel rodents, since the body of most animals is adapted to communicate with their own kind at an ultrasonic frequency. It should also be said that the ultrasonic wave generator is also capable of repelling insects - today many manufacturers produce this kind of electronic repellents.

Varieties of ultrasonic waves

Ultrasonic waves are not only transverse or longitudinal, but also surface and Lamb waves.

Transverse ultrasonic waves are waves that move perpendicular to the plane of direction of velocities and displacements of body particles.

Longitudinal ultrasonic waves are waves whose movement coincides with the direction of the velocities and displacements of the particles of the medium.

The Lamb wave is an elastic wave that propagates in a solid layer with free boundaries. It is in this wave that the oscillatory displacement of particles occurs both perpendicular to the plane of the plate and in the direction of motion of the wave itself. It is the Lamb wave that is the normal wave in platinum with free boundaries.

Rayleigh (surface) ultrasonic waves are waves with an elliptical motion of particles that propagate on the surface of a material. The speed of a surface wave is almost 90% of the speed of a transverse wave, and its penetration into the material is equal to the wavelength itself.

The use of ultrasound

As mentioned above, the diverse use of ultrasound, in which its most diverse characteristics are used, can be conditionally divided into three areas:

1. receiving the information;
2. active influence on the substance;
3. signal processing and transmission.

It should be borne in mind that for each specific application, it is necessary to select an ultrasound of a certain frequency range.

The effect of ultrasound on matter

If a material or substance falls under the active influence of ultrasonic waves, then this leads to irreversible changes in it. This is due to non-linear effects in the sound field. This type of impact on the material is popular in industrial technology.

Obtaining information using ultrasound methods

Today, ultrasonic methods are widely used in various kinds of scientific research for a thorough study of the structure and properties of substances, as well as for a complete understanding of the processes taking place in them at the micro and macro levels.

All these methods are mainly based on the dependence of the speed of propagation and attenuation of acoustic waves on the processes occurring in them and on the properties of substances.

Signal processing and transmission

Ultrasonic generators are used for converting and analog processing of various kinds of electrical signals in all branches of radio electronics and for controlling light signals in optics and optoelectronics.

Do-it-yourself ultrasonic emitter

In the modern world, the ultrasonic generator is used quite widely. For example, in industry they are used for quick and high-quality cleaning of something. It should be said that this cleaning method has proven itself only from the best side. Today, the ultrasonic generator is gaining popularity in other uses as well.

Assembling an UZG circuit to scare away dogs

Many residents of the country's megacities daily face a rather tangible problem of meeting a pack of stray dogs. It is impossible to predict the behavior of the flock in advance, so UZG will come to the rescue here.

In this article, we will discuss how to make ultrasonic

To create an ultrasound at home, you will need the following details:

• printed circuit board;
• microscheme;
• radio elements.

It will not be difficult to assemble the circuit on your own. In order to be able to control the impulses, it is necessary to fix the radio component microcircuit with a soldering iron to the specific legs.

Let us analyze the design of a high power ultrasonic frequency generator. The D4049 microcircuit, which has 6 logical intertors, works as an ultrasonic frequency generator.

A foreign microcircuit can be replaced with an analogue of domestic production K561LN2. To adjust the frequency, a 22k regulator is required, with the help of its US it can be reduced to an audible frequency. The output stage, thanks to 4 medium-power biopolar transistors, receives signals from the microcircuit. There are no special conditions for choosing transistors, the main thing here is to choose complementary pairs that are as close as possible in terms of parameters.

Almost any RF head that has a power of 5 watts or more can be used as a radiator. The ideal option would be domestic heads such as 10GDV-6, 10GDV-4 or 5GDV-6, they can easily be found in all acoustic systems manufactured in the USSR.

The do-it-yourself ultrasonic generator circuit remained only to be hidden in the case. A metal reflector will help control the power of the ultrasonic generator.

Scheme of the ultrasonic generator

In the modern world, it is customary to use an ultrasonic generator to repel dogs, insects, rodents, as well as for high-quality washing. UZG is also used to significantly reduce the time spent on washing and etching printed circuit boards. Chemical processes in a liquid proceed much faster due to cavitation.

The USG circuit is based on two rectangular pulse generators and a bridge-type power amplifier. On logical elements of type DD1.3 and DD1.4, a tunable pulse generator of ultrasonic frequency of the meander shape is installed. It should be remembered that its operating frequency directly depends only on the total resistance of the resistors R4 and R6, as well as on the capacitance of the capacitor C3.

Remember the rule: the lower the frequency, the greater the resistance of these resistors.

On the elements DD1.1 and DD1.2, a low-frequency generator was made, which has an operating frequency of 1 Hz. The generators are interconnected by means of resistors R3 and R4. In order to achieve a smooth change in the frequency of the high-frequency generator, you need to use capacitor C2. One secret should also be remembered here - if capacitor C2 is shunted using switch SA1, then the frequency of the high-frequency generator will become constant.

The use of ultrasound: the widest scope

As we all know, ultrasound is not used anywhere in the modern world. Surely each of us at least once in his life underwent an ultrasound procedure (ultrasound examination). It should be added that it is thanks to ultrasound that doctors can detect the occurrence of diseases of human organs.

Ultrasound is actively used in cosmetology for effective cleansing of the skin not only from dirt and fat, but also from the epithelium. For example, ultrasonic phonophoresis is successfully used in beauty salons for nutrition and cleansing, as well as for moisturizing and rejuvenating the skin. The technique of using ultrasonic phonophoresis enhances the protective mechanisms of the skin due to the action of an ultrasonic wave. Cosmetic procedures using ultrasound are considered universal and suitable for all skin types. Ultrasonic phonophoresis echoes miracles!

The ultrasonic steam generator is actively used not only in Turkish hammams, Finnish saunas, but also in our modern Russian baths. Thanks to steam, our body is effectively cleansed of invisible dirt, our body gets rid of toxins and toxins, skin and hair are healed, and steam has a positive effect on the human respiratory system.

Artificial fog generators are actively used to increase indoor air humidity, which has a beneficial effect on the climate in the apartment. This becomes especially relevant in the cold season, when central heating dries out the air. Artificial fog generators are used both in residential premises and in a terrarium or winter garden. Experts advise people with respiratory diseases or those prone to allergic diseases to have an ultrasonic fog generator.

Conclusion

In home use, an ultrasonic steam or fog generator is a very useful device that will not only create comfort and coziness, but will also be able to enrich the air with vitamins invisible to the eye, light negative air ions, which are so numerous on the seashore, in the mountains or in the forest, and very few inside our apartments. And this, in turn, will contribute to an increase in emotional state and improve health.

An ultrasonic transducer is a generator of powerful ultrasonic waves. As we know, a person does not hear the ultrasonic frequency, but the body feels it. In other words, ultrasonic frequency is perceived by the human ear, but a certain part of the brain responsible for hearing cannot decipher these sound waves. Those who build audio systems should be aware that high frequency is very unpleasant for our hearing, but if we raise the frequency to an even higher level (ultrasonic range), then the sound will disappear, but in fact it is. The brain will try unsuccessfully to decode the sound, resulting in headache, nausea, vomiting, dizziness, etc.

Ultrasonic frequency has long been used in various fields of science and technology. Using ultrasound, you can weld metal, wash and much more. Ultrasound is actively used to repel rodents in agricultural machinery, since the body of many animals is adapted to communicate with their own kind in the ultrasonic range. There is also data about repelling insects using ultrasound generators, many companies produce such electronic repellents. And we suggest that you independently assemble such a device, according to the above scheme:

Consider the design of a fairly simple high-power ultrasonic gun. The D4049 chip works as an ultrasonic frequency signal generator, it has 6 logic inverters.

The microcircuit can be replaced with a domestic analogue K561LN2. A 22k regulator is needed to adjust the frequency, it can be reduced to an audible range if the 100k resistor is replaced with 22k, and the 1.5nF capacitor is replaced with 2.2-3.3nF. The signals from the microcircuit are fed to the output stage, which is built on only 4 medium power bipolar transistors. The choice of transistors is not critical, the main thing is to choose complementary pairs that are as close as possible in terms of parameters.

As a radiator, you can use literally any RF heads with a power of 5 watts or more. From the domestic interior, you can use heads like 5GDV-6, 10GDV-4, 10GDV-6. Such high-frequency heads can be found in acoustic systems manufactured in the USSR.

It remains only to arrange everything in the body. To direct the ultrasonic signal, you need to use a metal reflector.

The ultrasonic gun is self-assembled on only two logical inverters and has a minimum number of components. Despite the ease of assembly, the design is quite powerful and can be used against drunk drunks, dogs or teenagers who sit up and sing in other people's porches.

Diagram of an ultrasonic gun

Chips CD4049 (HEF4049), CD4069, or domestic chips K561LN2, K176PU1, K176PU3, K561PU4 or any other standard logic chips with 6 or 4 logical inverters are suitable for the generator, but you have to change the pinout.

Our ultrasonic gun circuit is based on the HEF4049 chip. As already mentioned, we need to use only two logical inverters, and which of the six inverters to use is up to you.

The signal from the output of the last logic is amplified by transistors. To build up the last (power) transistor, in my case, two low-power KT315 transistors were used, but the choice is huge, you can put any NPN transistors of low and medium power.

The choice of a power switch is also not critical, you can install transistors from the KT815, KT817, KT819, KT805, KT829 series - the latter is composite and will work without an additional amplifier on low-power transistors. In order to increase the output power, powerful composite transistors such as KT827 can be used - but an additional amplifier will still be needed to build it up.

As a radiator, you can use any MF and HF heads with a power of 3-20 watts, you can also use piezo emitters from sirens (as in my case).

By selecting the capacitor and the resistance of the tuning resistor, the frequency is adjusted.

Such a self-assembled ultrasonic gun is quite suitable for protecting a summer cottage or a private house. But do not forget - the ultrasonic range is dangerous! We cannot hear it, but the body feels it. The fact is that the ears receive a signal, but the brain is not able to decode it, hence the reaction of our body.

Collect, test, rejoice - but be extremely careful, and I say goodbye to you, but not for long - AKA KASYAN.

To generate ultrasound, special emitters of a magnetostrictive type are used. The main parameters of devices include resistance and conductivity. The allowable frequency value is also taken into account. Device design may vary. It should also be noted that the models are actively used in echo sounders. To understand the emitters, it is important to consider their scheme.

Device diagram

A standard magnetostrictive ultrasound transducer consists of a stand and a set of terminals. The magnet is directly connected to the capacitor. There is a winding at the top of the device. A clamping ring is often installed at the base of the emitters. The magnet is suitable only for neodymium type. At the top of the models is a rod. A ring is used to fix it.

Ring modification

Ring devices operate at a conductivity of 4 microns. Many models are made with short stands. It should also be noted that there are modifications on field capacitors. To assemble a magnetostrictive emitter with your own hands, a solenoid winding is used. In this case, it is important to set the terminals to a low threshold voltage. It is more expedient to select a ferrite rod of a small diameter. The clamping ring is installed last.

Yard device

Making a magnetostrictive emitter with your own hands is quite simple. First of all, a rack for the rod is prepared. Next, it is important to cut the stand. You can use a metal disc for this. Experts say that the stand should be no more than 3.5 cm in diameter. The terminals for the device are selected for 20 V. A ring is fixed in the upper part of the model. If necessary, you can wind the tape. The resistance index for emitters of this type is in the region of 30 ohms. They work with a conductivity of at least 5 microns. Winding in this case is not required.

Double winding model

Devices with double winding are produced in different diameters. The conductivity of the models is at around 4 microns. Most devices have high wave impedance. To make a magnetostrictive emitter with your own hands, only a steel stand is used. An insulator is not required in this case. The ferrite core is allowed to be installed on the lining. Experts recommend preparing an o-ring in advance. It should also be noted that a field-type capacitor is required to assemble the emitter. The input resistance of the model should be no more than 20 ohms. The windings are installed next to the rod.

Reflector based emitters

Radiators of this type are distinguished by high conductivity. Models operate at a voltage of 35 V. Many devices are equipped with field capacitors. Making a magnetostrictive emitter with your own hands is quite problematic. First of all, you need to choose a rod of small diameter. In this case, the terminals are prepared with a conductivity of 4 microns.

The wave impedance in the device should be from 45 ohms. The plate is mounted on a stand. The winding in this case should not come into contact with the terminals. At the bottom of the device must be a round stand. To fix the ring, ordinary electrical tape is often used. The capacitor is soldered over the manganite. It should also be noted that rings are sometimes used with overlays.

Devices for echo sounders

For echo sounders, a magnetostrictive ultrasonic transducer is often used. How to make a model with your own hands? Home-made modifications are made with a conductivity of 5 microns. they average 55 ohms. To make a powerful ultrasonic rod, 1.5 cm is used. The solenoid winding is wound in small increments.

Experts say that it is more expedient to select racks for emitters from stainless steel. In this case, the terminals are used with low conductivity. Capacitors are suitable for different types. for emitters is at around 14 watts. Rubber rings are used to fix the rod. Electrical tape is wound at the base of the device. It is also worth noting that the magnet must be installed last.

Modifications for fish finders

Devices for fish finders are assembled only with wire capacitors. First you need to install the rack. It is more expedient to use rings with a diameter of 4.5 cm or more. The solenoid winding must fit snugly against the rod. Quite often, capacitors are soldered at the base of the emitters. Some modifications are made to two terminals. The ferrite rod must be fixed on the insulator. To strengthen the ring, electrical tape is used.

Low impedance models

Low impedance devices operate at 12V. Many models have two capacitors. To assemble a device that generates ultrasound with your own hands, you will need a 10 cm rod. In this case, capacitors are installed on the emitter of a wired type. The winding is wound last. It should also be noted that a terminal is required to assemble the modification. In some cases, 4 micron field capacitors are used. The frequency setting will be quite high. It is more expedient to install the magnet above the terminal.

High impedance devices

High resistance ultrasound transducers are well suited for short wave receivers. You can assemble the device yourself only on the basis of transition capacitors. In this case, the terminals are selected for high conductivity. Quite often, the magnet is mounted on a stand.

The stand for the emitter is used of low height. It should also be noted that one rod is used to assemble the device. To insulate its base, ordinary electrical tape is suitable. In the upper part of the emitter must be a ring.

Rod devices

The rod-type circuit includes a conductor with a winding. Capacitors are allowed to use different capacities. However, they may differ in conductivity. If we consider a simple model, then the stand is prepared in a round shape, and the terminals are set to 10 V. The solenoid winding is wound last. It should also be noted that the magnet is selected neodymium type.

The rod itself is applied at 2.2 cm. The terminals can be installed on a lining. It should also be mentioned that there are modifications for 12 V. If we consider devices with high-capacity field capacitors, then the minimum diameter of the rod is 2.5 cm. In this case, the winding must be wound up to the insulation. A protective ring is installed at the top of the emitter. Stands are allowed to be made without lining.

Models with unijunction capacitors

Emitters of this type give out conductivity at the level of 5 microns. At the same time, their wave resistance indicator reaches a maximum of 45 ohms. In order to independently manufacture the emitter, a small rack is being prepared. At the top of the stand must be a rubber pad. It should also be noted that the magnet is prepared neodymium type.

Experts advise installing it on glue. Terminals for the device are selected for 20 watts. The capacitor is directly installed above the lining. The rod is used with a diameter of 3.3 cm. There should be a ring at the bottom of the winding. If we consider models for two capacitors, then the rod is allowed to be used with a diameter of 3.5 cm. The winding must be wound up to the very base of the emitter. Tape is glued to the bottom of the drain. The magnet is installed in the middle of the rack. The terminals must be on the sides.