A digital oscilloscope, of course, is much more advanced than a conventional electronic one, it allows you to remember waveforms, can connect to a personal computer, has mathematical processing of results, screen markers and much more. But with all the advantages, these new generation devices have one significant drawback - this is a high price.

It is she who makes the digital oscilloscope inaccessible for amateur purposes, although there are “pocket” oscilloscopes worth only several thousand rubles, which are sold on Aliexpress, but it is not particularly convenient to use them. Well, just an interesting toy. Therefore, while we will talk about measurements using an electronic oscilloscope.

On the topic of choosing an oscilloscope for use in a home laboratory on the Internet, you can find a sufficient number of forums. Without denying the virtues of digital oscilloscopes ...

A group of scientists from the University of Texas at Austin, USA, under the leadership of Yu Guihua, created a flexible electric circuit based on a special gel, which, if cut into two, is completely self-healing and resumes its original electrical conductivity.

The new gel has a combination of properties that were not previously met together, it is flexibility, high electrical conductivity, and the ability to self-repair at room temperature. Such a solution opens up a wide range of possible applications: flexible electronics, robotics, electric batteries, and even soft artificial leather and biomimetic prostheses.

The property of the new gel is provided by two gel-like constituents of its substance: a supramolecular gel (or “supergel”), and a matrix of a conductive polymer hydrogel into which a supramolecular gel is introduced ...

Online shopping now does not surprise anyone. Everything is very simple: just select and order the goods, pay in any way possible and patiently wait for it to be sent by mail. One of these stores, of course, can be considered Chinese Aliexpress. Here, buyers are attracted to a lot: a variety of goods, low prices, a system of discounts on goods, free delivery and a huge number of sellers. Therefore, the same product can be bought at different prices.

Before becoming a full customer, you must register. The registration procedure is quite simple and free. We won’t write about it here, because a lot of detail has been written about this on the Internet, in addition, there are enough videos on this topic on YouTube. The author of the article would like to talk about his generally poor shopping experience, share his impressions of goods and services. For some reason, the very first purchases were LED lamps of different styles and different capacities ...

Electric underfloor heating can be a truly universal means of heating a room, apartment, or country house. It allows you to evenly distribute heat over the entire surface of the floor itself, and fully warm the air in the room. All types of flooring, whether it is carpet, linoleum, laminate, parquet, tile, or even natural stone, are compatible with such a heating system.

The basis of the electric underfloor heating system are heating cables laid under the floor covering. This can be single-core or two-core cables, or heating mats, which are a reinforced plastic mesh in which a two-core heating cable is laid.The power supply to the cables is regulated by a thermostat that controls the amount of heat transmitted to the floor. During installation, the cables are laid in a concrete screed with a thickness of 3 to 5 cm with the same pitch ...

Since 1879, the safety of people working with electricity has been a hot topic. It was then that the first case of human death from exposure to electric current was registered.

Since then, the number of victims has been increasing all the time. Based on sad statistics, security rules have been created, each item in which is based on someone else's tragedy.

Electricians of various professions have been trained for several years by schools, technical schools, institutes, and specialized courses. After that, graduates of institutions go on an internship at energy enterprises, pass numerous exams and tests. Only after that they are allowed to work independently.

However, even electricians with the highest fifth safety group who have worked for many years due to errors and carelessness, sometimes get serious electrical injuries ...

The article “Electronic Oscilloscope - Device, Principle of Operation” briefly talked about this universal instrument. The information given is sufficient to make the measurement process conscious, but in the case of repair of such a complex device, deeper knowledge will be needed, because the circuitry of electronic oscilloscopes is very diverse and quite complicated.

Most often, a beginner radio amateur has at his disposal a single-beam oscilloscope, but having mastered the methods of using such an instrument, it will not be difficult to switch to a two-beam or digital oscilloscope.

The figure shows a fairly simple and reliable C1-101 oscilloscope with so few handles that it is absolutely impossible to get confused. Please note that this is not some kind of oscilloscope for school physics lessons, it was just that that was used in production only twenty years ago. Oscilloscope power not only 220V ...

A group of volunteers from Greenpeace, who arrived in 2011 on the Philippine island of Luzon, settled in a tribe of local residents who, as it turned out, used only paraffin candles and kerosene lamps to illuminate after dark. The inhabitants of the village did not use electricity at all, and the guests of the island had nowhere to charge their numerous digital equipment.

Some of the Filipinos, who had a kerosene lamp on the farm, traveled 50 kilometers to a neighboring village to get kerosene for their lamps there, but civilized Americans were in a real technological shock from all this, their thoughts were busy finding a solution - how to charge their gadgets, given the complete absence of even power lines within the area of ​​Central Cordillera, where they settled. Fortunately, there was an abundance of seawater on the island, which, as you know, can serve as an electrolyte solution, andif electrodes are placed in such a solution ...

For laying hidden communications in the room, in particular wiring, it is often necessary to make a groove in the wall, or, to put it more closely to the topic, choose a strobe. This process is conveniently carried out using a tool specially designed for this purpose - a chipper.

The shtroborez is similar to a grinder and at the same time like a hand-held circular saw, but cutting is done here with two diamond blades with the ability to adjust both the depth of cut and its width.The result is a smooth stroba, a groove with perfectly even side walls, which can hardly be achieved using a grinder, and the working time is halved compared to a grinder, because two cutting discs work simultaneously with a stroborez. How to choose a chipper if it is necessary to carry out the appropriate work? Fact that various works require...

In the houses of the old building on each floor of the entrance, the builders installed an electric input shield. From it they spread an electric network in all rooms. Now another technical decision has been made. All commutations of the electric circuit are carried out inside the apartment where the distribution electric switchboard is mounted.

However, during settlement, it is often necessary to replace or transfer the distribution electrical panel. Cheap designs are simply not capable of fulfilling modern tasks of safe power supply. Even for a modern two-room apartment with 60 m2 of area, more than a dozen electrical circuits are required. Changing the shield model will require lengthening the power cable, and it may be walled up in a concrete wall or not fit in length. It is not always convenient to take a new cable and lay it with an additional routeth, especially when it is fixed ...

The bathroom is very different in humidity from other rooms in the home, therefore, for the safe installation of electrical appliances there, it is important to consider this factor. This also includes fixtures, which, although it is customary to place them high on the ceiling or on the wall, nevertheless, a correctly selected lamp for the bathroom can be installed in almost any humidity zone of the bathroom, provided, of course, that it has the appropriate protection class .

Basically, any bathroom can be divided into four humidity zones, in each of which the requirements for the security of the installed lamp, as well as safety, will be different. Each humidity zone is different from each other, which is why for each of them special requirements are placed on the luminaires. The first humidity zone is in the bath or in the shower ...

Many of us regularly overcome significant distances on foot, without at all thinking about the possible optimization of the energy costs of our body. Sometimes, when we get to work or study, having walked a considerable distance on foot, we feel tired, which to a certain extent reduces our performance. And despite the fact that there is a whole working day ahead, and the forces on it are simply necessary.

Meanwhile, the development of individual transport does not stand still, and now, a real revolution in this area has been completed - an electric unicycle has been created. This is a new mobile vehicle that allows you to easily get almost anywhere, leaving behind, among other things, annoying and such tiresome traffic jams. The electric unicycle is compact, it can be easily transported, it is convenient to recharge, even a child can handle ithowever the audience interested ...

The name of this electrical device for 0.4 kV electrical installations contains two fundamental actions: actuation as an electromagnet from the passage of electric current through the coil winding and start-up of the electric motor by power contacts.

Structurally, any magnetic starter consists of a stationary part and a movable armature that moves along the runners. It is highlighted in blue in the picture.

The starter can be very simplified as one button, on the case of which there are terminals with connected power circuits and stationary contacts. A contact bridge is mounted on the moving part. Its purpose: providing a double break of the power circuit to turn off the power of the electric motor and a reliable electrical connection of the incoming and outgoing wires when the circuit is switched on ...