Reference data

Soldering (soldering) is an operation by means of which a more or less strong connection of separate pieces of the same metal or two or more different metals between themselves is made. Three kinds of soldering: There are three types of solder: soft, or weak, hard, or strong, and nugget. In the first two cases, …

Soft or weak soldering is: soldering with soft or weak, i.e. fusible, solder consisting either of pure tin or of alloys of this metal with lead and bismuth. You can read about the types of soft solders and their use in our article. Solders: Here are a few of the most used soft solders: A) …

The beginner will find information about hard soldering, its uses and methods very useful. Hard, or strong soldering, is used where it is necessary to firmly connect refractory metals (iron, steel, copper, brass, silver, gold, etc.), is made with the help of hard or refractory solder. Tools and fixtures for hard soldering: The essence of …

As many may have already assumed from the name, in native metal soldering, the process of fusing parts together is accomplished without solder, or without the use of another, more easily melted metal. It occurs either by fusing the molten ends and edges of the parts to be soldered, or by using molten pieces of …

Trees not only provide us with oxygen, tasty fruits and an escape from the baking sun in the hot season, but also an excellent building material. Every person should protect and preserve the living nature (sometimes even from himself) and rationally use wood material. In order to make a quality wooden product, it is necessary …

Electric current passing through the human body can cause two types of injuries – electric shock and electric trauma. Electric shock is more dangerous because it affects the entire body. Death occurs from paralysis of the heart or respiration, or sometimes from both at the same time. Electrical Injuries: Electric traumas are defined as electrocution …

Every radio amateur should at least a little, but understand the marking of certain radio electronic components. Of course, for this purpose there are many different reference books, in which such information is presented in sufficient volume. This article contains data on the code marking of capacitors and summary tables of capacitance conversion. In order …

Probably many of the readers of this article know such a common, versatile device as an oscilloscope, which is used for observing digital and analog signals. This article is useful for beginners or inexperienced radio amateurs who are just thinking about buying an oscilloscope. The following information is informative, but may help beginners in choosing …

This article contains basic terms, the correct perception of which is the foundation for understanding the work of radio electronic devices and circuits. This article briefly outlines the concepts known to many from the school physics course, but thanks to the brevity of the material, they will not be difficult to master and memorize the …

Georg Simon Ohm, born in 1789 in the family of a poor locksmith, was an outstanding German physicist who gave us all his famous “Ohm’s Law. Simplicity is a sign of genius, so the three-letter combination is firmly embedded in the school physics curriculum. In this article, you will not find anything new, only recommendations …