Build days

DIY surge protector: diagram, video, assembly instructions

Oct 28, 2021

Connecting the computer and peripherals to the mains will usually require a large number of outlets. At the same time, the operation of the power s...

Obtaining technical specifications for power supply

Oct 28, 2021

The procedure for obtaining technical specifications and connecting any facility to the power supply in the Russian Federation is regulated by the ...

Types of screwdrivers and their purpose, marking, photo

Oct 28, 2021

Every home should have a screwdriver. Of course, there is no need to acquire all the varieties, but which ones are needed for the house is very eas...

How to use an oscilloscope: instruction video

Oct 28, 2021

Faced with an oscilloscope, an uninformed person has many questions why there are so many switches and control knobs on it. Everything is pretty si...

RCD connection diagram in a single-phase network with and without grounding

Oct 28, 2021

Residual current device will protect the electrical wiring in a private house or apartment from leakage currents, but at the same time will not pro...

Air circuit breaker: design and principle of operation

Oct 28, 2021

To protect electrical equipment and high-voltage power lines, a type of switching device such as an automatic air switch is used. As the name impli...

Package switch: device, purpose, principle of operation

Oct 28, 2021

An obsolete analogue of a circuit breaker is the so-called bagger. Previously, this device was often used to distribute electricity, and in particu...

Phase meters: purpose, device and principle of operation

Oct 28, 2021

It is customary to refer to a phase meter as a device of an electrical measuring series, the function of which is to measure the phase angle relati...

Automatic frequency unloading of AFC: purpose and principle of operation

Oct 28, 2021

There are various problems that can lead to an accident at a power plant and in power systems in general. In addition to phase-to-phase and ground ...

AC and DC: What's the Difference Between Them

Oct 28, 2021

There are two kinds of currents in electricity - direct and alternating. Devices also require one or the other type of current to supply power. The...