The more I learn about the modern elemental base, the more I am surprised at how easy it is now to make electronic devices that you could only dream of before. For example, the antenna amplifier that will be discussed has a working

You can make a super simple and super fast antenna from a coaxial cable for receiving digital television channels in your hands for about 5 minutes. For this, you will not need absolutely anything except the cable itself. And this is the main plus

On New Year's Eve, I would like to decorate my house in an original way: so that it’s not like the neighbors, and, of course, not like “the last time”. With the help of LED garlands on sale, you can create interesting compositions, but the price of the question crosses out the bold

Radio amateurs have long chosen such an innovation as solder paste. Initially, it was invented for soldering SMD components during machine assembly of boards. But now many people use this paste for ordinary manual soldering of parts, wires, metals, etc.

I would say that quite often such wires and parts come across that practically do not flatter with ordinary rosin, even in an alcohol solution. And the point is not in the oxide film that formed during the long storage period, but rather in

I have long had an idea to make a backup power source for myself on a battery, such a peculiar “Power Bank” of high capacity with a voltage of 12 V. You can take it with you on a camping trip or go fishing and charge your phone, laptop, flashlight or whatever

To assemble a mini soldering iron from a regular lighter, you need about 15 minutes of your time. With the help of this soldering iron you can solder at least radio elements, at least wires. Such homemade work will surely help you out in an emergency.

A very powerful LED strobe that perfectly complements any disco dance floor. A strobe was built on three LED arrays with a total power of 150 watts.

It happens that you need to solder a microcircuit with a large number of legs. To make such an ordinary soldering iron is practically not possible without ruining the track or microcircuit. This operation is usually done using a special hot air gun for soldering or infrared

A very simple three-channel RGB color music on LEDs does not contain scarce or expensive components. All the elements can be found in anyone, even the youngest radio amateur. The principle of color music is classic, which has become true

This shortwave radio circuit contains only three transistors. The easiest walkie-talkie to repeat by beginner hams. The design was taken from an old magazine, but it has not lost its relevance.

Greetings, dear friends! In this article I will show and tell you how to make a very simple tester for checking radio components such as diodes, transistors, capacitors, LEDs, incandescent lamps, inductors and much more.

In this article I will tell you how to make a tester from a smartphone for dialing electrical circuits for an open or short circuit. In fact, I’ll make a prefix for a cell phone (rather, even an adapter with probes), with which

It is no secret that beginner hams do not always have expensive measuring equipment at hand. For example, an oscilloscope, which even in the Chinese market, the cheapest model costs about several thousand. Sometimes an oscilloscope is needed for repair

In my youth I had a soldering iron with instant heating of Soviet production. In appearance, he looked like a gun. The soldering tip was made of thick copper wire. Its design was simple: a transformer with two windings - network

Very often, when building various electric generators or motors, it is necessary to determine the pole of the magnet. Almost everyone, from school physics lessons, knows that a magnet has two poles: the north (indicated by the blue letter

LED, or LED lamps have recently entered our lives widely. And this is not surprising, since they have many advantages compared to other sources of artificial light. Here are a few of them: 1. Profitability. 2.

Good afternoon, dear readers! Today we will focus on the assembly of the soldering station. So let's go! It all started with the fact that I came across this transformer: it is 26 volts, 50 watts.

I would say that this is just a super simple amplifier containing all four elements and delivering 40 watts into two channels! 4 parts and 40 watts x 2 power output Carl! This is a godsend for motorists, as the amplifier is powered by 12 Volts, full

One of the simplest circuits in amateur electronics is an LED flasher on a single transistor. Its manufacture is within the power of any beginner who has a minimum set for soldering and half an hour of time.

The simplest infrared sensor, which will report the presence of an obstacle, can be done with just one transistor. This homemade product is more likely not a practical application, but rather a theoretical one, demonstrating the operation of an infrared presence sensor

Headphones in our time is an integral accessory of every person! Many of us listen to them while playing sports, on the bus, or even on the way to work or school! But many of the Chinese headphones do not produce such a good sound, so I decided

If you have an old computer power supply (ATX) at home, then do not throw it away. After all, from it you can make an excellent power supply for home or laboratory purposes. Finalization will be minimal and in the end you will get almost

The most amazing thing is that the circuit of the battery level indicator does not contain transistors, nor microcircuits, nor zener diodes. Only LEDs and resistors that are turned on in such a way that an indication of the level of