Electronics. Page 26

It's no secret that the tablet's battery is very energy-intensive. Otherwise, how to “feed” such a giant, which has a large screen, powerful speakers and no less powerful Wi-Fi, Bluetooth and GPS modules... It’s very unpleasant that these devices break down

This chip, TDA2003, has found wide application in literally all types of audio systems - it can be found in portable speakers, car radios, computer speakers, televisions and even small music centers. Such

I have been using low voltage soldering irons for a very long time. It just so happened that I got a few of them. They are powered by a safe 42 volts. Usually they are connected to a transformer, but I don’t have one. I use it for nutrition

Every day, radio amateurs are increasingly using SMD parts and components in their work.Despite their size, they are easier to work with: you don’t need to drill holes in the board, bite off long pins, etc. You need to master soldering SMD parts

Hello! Being an amateur electronics enthusiast, I am sure that everything we do - electronic toys - homemade products, or large projects - is all out of curiosity and laziness. Curiosity strives to understand and comprehend the vast, unknown,

This instruction will clearly show how to repair an LCD display with dead rows or columns. An old phone is taken as an example, but the principle is also suitable for other devices. Typically the display is connected to the controller via

On the Internet I saw a lot of different technologies and methods for making solar water heaters and decided to share my own experience. I consider this project to be very successful, since literally every centimeter of the collector surface is in direct

Not a single portable electronic device, be it a portable speaker for a phone, the phone itself, a player, etc. can't do without a battery. Lithium-ion batteries with a nominal voltage of 3.7 volts are now extremely popular; they

Budget car amplifiers made in China, as a rule, are not particularly reliable.Although they are assembled according to traditional schemes, which are also used in devices of serious manufacturing companies, the “Chinese” often save on

A simple wind generator can be made from several faulty hard drives and a water pump from a washing machine. Alternative energy is closer than it seems; there is now more than enough junk to make such necessary gizmos. Such

When working with emery, there is always not enough light. I cover the garage light with my body and a shadow appears on the workpiece. Initially I used a carrier, even used a headlamp. I decided to make the task easier and make permanent lighting.

I don’t argue that you could buy a ready-made ultrasonic humidifier, it would be faster, but I had a problem with spare parts that it came out by itself. In the article I will show how and what I made it from, and at the end, I will tell you how I would make it now, based on

Having a very energetic dog that runs without a break after the ball, we decided to use this by making such a device to save some of the energy while jogging. We will make a keychain for the neck with an LED. In the morning, on a walk, it will charge, and

Many of us have accumulated various power supplies from laptops, printers or monitors with voltages of +12, +19, +22. These are excellent power supplies that are protected against both short circuits and overheating.Whereas in home, amateur radio

Have you ever held a huge LED in your hands, the size of a human fist? Of course not, because they don't exist. I'll show you how to make such an original thing with your own hands. This LED will look exactly like its small one

One of the significant disadvantages of powerful asynchronous electric motors is their “difficult” starting, which is accompanied by huge initial currents at this moment. As a result, a large voltage surge appears in the network. Such “failures” can

I have a regulated power supply. Only voltage is regulated; therefore, there is no current regulation. For some purposes it is enough. I decided to assemble a unit with current and voltage regulation. Laboratory power supply, hereinafter referred to as LBP, is very

Hi all! This is the composition lying on my table. And what do you think is all this for? Yes, yes, I decided to assemble a night vision device. Let's say, to watch owls at night. I find this very interesting.

Powerful, ultra-bright LED light sources have now become popular and available. The advantages of LEDs are that their service life is much longer - up to 20,000 hours, and not 1000 hours like conventional incandescent lamps. Also LED modules

There are many different LED flasher circuits on the Internet - simple, complex, with or without microcircuits. But a regular flashing LED will no longer surprise anyone, so there is a need to assemble something more advanced. For example,

To power various electronic devices and DIY circuits, you need a power source whose output voltage can be adjusted within a wide range. With its help, you can observe how the circuit behaves under one or another

Quite often, residents of apartment buildings need to attach a picture, hanger, shelf or some other piece of furniture to the wall of their apartment. To do this, mark a point on the wall and drill a small hole

Hi all! It is quite possible to make a simple desulfator from old and unnecessary things in about 15 minutes, if, of course, you know what to make and from what. Any normal radio amateur has a lot of all kinds of electronic junk. And if you scratch

As you know, all modern cars are equipped with direction indicators, which are a flashing light bulb or LED on the left or right side of the body. Sometimes a standard electromechanical relay fails, and getting a powerful one