Electronics - Lessons

Basics of Quality Soldering. How to Learn to Solder Basics of Soldering Various Soldering Methods Soldering Printed Circuit Boards Enameled Wire Connection Technique Basics of Soldering The first thing you need to do is prepare everything necessary for soldering electronic components: a soldering iron, a soldering iron stand, a wooden block, solder, flux, pliers or tweezers, and wire cutters. Before soldering, the soldering iron must be prepared. To do this, use a file to shape the tip of the soldering iron at a 45-degree angle ( this is especially true for a new soldering iron, as the anti-burn coating on a new tip prevents tinning and, consequently, picking up solder ). After cleaning the tip, plug the soldering iron into the mains. When it heats up to the melting point of the solder, slightly process the tip with the file once more until the working part shines, and immediately touch the flux a...

THE ABCs OF SHORTWAVE (SW) RADIO From the moment radio was invented up to the present day, its primary application has been the transmission of information from one point to another — radio communication. The possibility of using radio waves to transmit messages over a distance was first demonstrated in 1896 by the inventor of radio, A. S. Popov. And although the world's first radiogram consisted of only two words ("Heinrich Hertz") and covered a distance of 250 meters, the foundation was laid. Radio communication quickly gained widespread acceptance. Radio stations appeared on ground facilities and ships, on aircraft, and on spacecraft. Radio penetrated military affairs and firmly entered everyday life. The tremendous popularity of radio was largely promoted by enthusiastic amateurs who selflessly devoted their time and energy to experiments. One of the first radio amateurs in Russia was the famous Russian scientist M. A. Bonch-Bruevich. Back in 1906, he bui...