Knowledge Base

Electronic homemade products for radio amateurs and novice electricians

Oct 28, 2021

Since you have decided to become a self-taught electrician, then surely after a short period of time you will want to make some useful electrical a...

Electrician Tips & Guides

Oct 28, 2021

An aspiring electrician should definitely know the basic tricks and guidelines for electrical work. Very often non-standard situations arise in whi...

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...

Transformer and autotransformer: difference in design and operation

Oct 28, 2021

To convert voltage in electrical engineering, transformers or autotransformers are used. Due to the similarity of the names of these two devices, t...

Active, reactive and apparent power in the AC circuit

Oct 28, 2021

In DC circuits, power is not divided into different components, such as active and reactive, therefore, a simple expression P = U * I is used. But ...

Anode and cathode: what are they, how to identify and remember them

Oct 28, 2021

Among the terms in electrical engineering, there are concepts such as anode and cathode. This applies to power supplies, electroplating, chemistry ...

Voltage divider: device, principle of operation, purpose

Oct 28, 2021

Often, when designing an electronic circuit, it becomes necessary to obtain a point with a certain signal level. For example, create a reference po...

Dielectric losses in dielectrics

Oct 28, 2021

Everyone knows that a dielectric is a material that prevents electric current from passing through. There are a huge number of such materials and s...

Diode bridge: device, principle of operation, purpose, circuits

Oct 28, 2021

We looked at passive components of electronic circuits such as resistors and capacitors. But besides them, electricians and radio amateurs have to ...

Electric arc: causes and methods of application

Oct 28, 2021

When switching electrical devices or overvoltages in the circuit between live parts, an electric arc may appear. It can be used for useful technolo...