Take the simplest example: you need to turn on the press 1 second after the operator simultaneously holds the two buttons in the pressed state. Thus, we guarantee that both hands of the operator are busy and give him time to monitor the readiness of the machine. The simplest solution is to connect the contacts of both buttons in series and put an electronic relay with a timer. If the timer allows adjustment of the delay time, then such a scheme will provide some flexibility of the system, but not too high.

Any additional conditions, for example, the requirement to control the sequence of button presses will put us in a difficult situation - we will be forced to change the circuit by introducing additional relays. This is not a difficult problem, provided that such a need arises extremely rarely. But in a competitive production environment, the time it takes for a new product to enter the market is crucial ...

Speaking of energy-saving light sources, such as compact fluorescent lamps or LEDs, we, first of all, note their high efficiency. The main indicator of this same efficiency is by no means low power consumption; the main characteristic of the efficiency of a light source is its direct light output.

It is the light output that shows how many lumens of visible light a particular lamp gives, a particular light source, consuming a unit of electric power, and is measured, respectively, in Lm / W, that is, in lumens per watt. It is understood that for each watt of the electric power consumed by the light source, a strictly defined number of lumens of the visible light flux emitted by it is necessary. The value of light output is strongly associated with the manufacturing technology of a particular light source. Obviously, those who give up their positions as main...

In modern electric networks, power outages are by no means uncommon. For this reason, it is difficult to overestimate the importance of having a high-quality uninterruptible power supply in case of emergencies.

A very practical modern solution is voltage inverters, the purpose of which is to provide high-quality power supply in case of an accident.Such an inverter is powered by batteries, converting their constant voltage to alternating voltage, fully or partially compensating for the lack of power from the common network.

This is especially true for country houses, where not only lighting fixtures, but also heating and water supply can stop working without electricity. Boiler, pump, other automation - almost everything requires continuous power household appliances may fail...

Since the end of February 2013, a group of scientists from Kogakuin University of Japan, six people led by Professor Sato, have been developing and implementing an innovative idea - an almost transparent lithium-ion battery.

Finally, after two and a half years, namely on August 27, 2015, at the Innovation Japan 2015 exhibition held in Tokyo, the researchers presented to the general public a working prototype, a translucent battery that can be charged from light with different wavelengths, from red to near ultraviolet .

Thin films of the anode and cathode electrodes, 90 and 80 nanometers thick, respectively, turned out to be almost transparent. The longer the wavelength of the charging light, the more transparent the film electrodes remain after charging ...

In practice, every electrician is faced with the work of adapters, power supplies, voltage converters. In all these devices, electric capacitors are widely used, which are often called “electrolytes” on slang.

Their main advantage is the relatively large size of the capacitance with a relatively small size. In addition, their production has long been established, and the cost is relatively low.

Any capacitor consists of two plates, the space between which is filled with a dielectric. The electrolytic capacitor differs from all others in that it uses an electrolyte layerfilling the space between the two plates, most often made of foil plates. Moreover, one of them is covered with a small dielectric layer oxide film.Foil Tapes Fold Together ...

How to connect the generator to the house? It would seem that it could be easier, started the generator, connected to the house and everything, we live as before))). But not everything is as simple as it seems at first glance. In this article I would like to talk about how our people, wanting to save a little on materials, the work of qualified specialists, manage to connect gasoline and diesel generators.

So, having recently been “visiting” with one of his comrades who, according to him, worked for many years as a ship electrician and knows everything about electricity, including Ohm’s law :) ...

So, the reason for the visit was that the gasoline generator refuses to give out vital 220 V. At the first inspection of the "client", that is, the generator of the adjacent electrical household, the reason for the failure became clear - the automatic voltage regulator unit has failed ...

Electrical installations are closely related to safety issues. With a sharp increase in modern loads, they began to receive increased attention. For this, various protective devices and ground connection schemes are used. Thanks to connecting a PE-conductor to the living room, it is possible to: reduce the devastating consequences of emergencies, prevent fires from faulty electrical equipment, save people from electrical injuries and death. Protective grounding helps solve all these issues.

High voltage electrical energy is transmitted over long distances using transformers. Any household electrical appliance performs an action when current flows through it. The path for it is formed by a closed ring from the generator to the consumer through the wires of the “phase” and “zero”. The potential difference between them determines the value ...

Electricity not only brings us great benefits, greatly facilitating the human life, but also carries a serious threat. The energy companies supplying it pay a lot of attention to resolving security issues, and spend enormous material resources on its observance.

However, accidents with people from exposure to electricity continue.

Possible causes of electrical injuries in everyday life are considered in a separate article. And here we touch on the features of electric shock on people on the street.

All electrical installations are made inaccessible to unauthorized visits by unauthorized persons, and live objects are fenced, placed in separate buildings or located at a height. The photo shows the fence with a fence of a high-voltage switchgear, which is located around the perimeter ...