DIY electronics. Page 7

A do-it-yourself device using a single transistor can be made by almost anyone who wants it and makes a little effort to purchase very inexpensive and not numerous components and solder them into a circuit. It is used for

According to statistics, more than half of batteries fail due to plate sulfation. I won’t go into detail about the reasons why this phenomenon occurs, but in a small part it is due to improper use of the battery. And in

When you have a CNC machine and modern power tools, making a transparent case from wood and plexiglass for the power supply (and other products) with your own hands is not so difficult. But how to get out of a situation if something like this

It's been almost a year since I started replacing all the lamps in the house with LED ones. The results were sometimes more pleasing, sometimes less, but one incident led me to an interesting decision. How often have you or someone in your family accidentally knocked over a tabletop?

One day, when I took my screwdriver out of the closet, I discovered that it didn’t work. The batteries were dead, the first thing I thought was and put the screwdriver on charge. But as soon as I connected the charger to the battery, it immediately

Today I will tell you about a great idea on how you can make a third arm for soldering with your own hands. This device will greatly facilitate the soldering process. The soldering holder will keep objects in place when working on precision projects. This is soldering

Good afternoon Today we will talk about an original night light that will serve as an excellent decoration for your windowsill. So let's get started! The basis is an ordinary 100-watt incandescent light bulb.

Nowadays, reliability and practicality are valued. More and more electronics are being made using Li-ion batteries. Although the devices are more expensive than those using the same lead-acid or Ni-cd batteries. I decided to modify the old flashlights with

When a laser printer is available, radio amateurs use a printed circuit board manufacturing technology called LUT. However, such a device is not available in every home, since even in our time it is quite expensive. More

To use a power transformer in stock, you need to know its key characteristics as accurately as possible. There are almost never any difficulties in solving this problem if the markings are preserved on the product. Required

The more I understand the modern element base, the more I am amazed at how easy it is now to make electronic devices that previously could only be dreamed of. For example, the antenna amplifier that will be discussed has a working

A super simple and super quick to make antenna from a coaxial cable for receiving digital television channels can be made with your own hands in about 5 minutes. For this you will need absolutely nothing except the cable itself. And this is the main plus

For the New Year, you want to decorate your house in an original way: so that it’s not like your neighbors’, and of course, not “like last time.” With the help of LED garlands offered for sale, you can create interesting compositions, but the price of the issue cancels out the bold ones

Radio amateurs have long chosen such an innovation as solder paste. It was originally 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 you come across wires and parts that are practically not tinned with ordinary rosin, even in an alcohol solution. And the point here is not the oxide film that formed during long-term storage, but rather the

I have long had the idea of ​​​​making myself a backup power source using a battery, a kind of high-capacity “Power Bank” with a voltage of 12 V. You can take it with you on a hike or fishing and charge your phone, laptop, flashlight, etc.

To assemble a mini soldering iron from a regular lighter you will need about 15 minutes of your time. With this soldering iron you can solder both radio elements and wires. This homemade product will definitely help you out in an emergency.

A very powerful LED strobe light that will perfectly complement any disco dance floor. A strobe light was built on three LED matrices with a total power of 150 W.

Sometimes you need to unsolder a microcircuit with a large number of legs.It is almost impossible to do this with a regular soldering iron without damaging the tracks or the microcircuit. This operation is usually done using a special hot air gun for soldering or infrared

Greetings, dear friends! In this article I will show and tell you how to make a very simple tester for testing 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 out of a smartphone to test electrical circuits for open circuits or short circuits. In fact, I will make an attachment for a cell phone (more likely even an adapter with probes), with the help of which

It's no secret that beginning radio amateurs don't always have expensive measuring equipment at hand. For example, an oscilloscope, which even on the Chinese market, the cheapest model costs about several thousand. Sometimes an oscilloscope is needed for

When I was young, I had a Soviet-made instant-heating soldering iron. In appearance it looked like a pistol. The soldering tip was made of thick copper wire. Its design was simple: a transformer with two windings - network

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