Electronics. Page 27

I have always been fascinated by obtaining free energy from natural resources. And somehow I got the idea to make a simple mini power station that would generate electricity from a passing water stream. It all started with an idea

The current-carrying windings of the electric motor are led out into the distribution box. The terminals of the windings form two parallel rows, each marked with the letter C and numbers from 1 to 6. This is done in order to mark the beginning and end of all three windings.

An induction heater allows you to heat metal until it turns red without even touching it. The basis of such a heater is a coil in which a high-frequency field is created, which acts on a metal object placed inside. IN

As you know, audio power amplifiers are divided into different classes.Amplifiers operating in class “A” can provide decent music sound quality due to the high quiescent current, but they have extremely low efficiency and consume a lot

Transistor amplifiers, despite the advent of more modern microcircuit amplifiers, have not lost their relevance. Getting a microcircuit is sometimes not so easy, but transistors can be removed from almost any electronic device, namely

The Internet now offers a huge number of different sound amplifiers, for every taste and color, to suit any need. As you know, even the most reliable amplifiers tend to fail, for example, due to improper operating conditions,

A huge and varied variety of chargers for phones, smartphones and tablets are now literally on every counter. But quite often our expectations do not coincide with reality! For example; getting ready to travel and buying a powerbank for

Old push-button mobile phones are long outdated and almost out of use. However, there are many ways to give such a phone a second “life” rather than sending it to scrap or a landfill. One of these ways is to put this miracle of the 90s into

Many sound-reproducing devices, whether tape recorders or amplifiers of the end of the last century, were equipped with a dial indicator on the front panel.His hand moved to the beat of the music, and although this had no practical significance,

The article is devoted to the possibility of starting a three-phase asynchronous motor with a power of 250 W from a 220 V network not using a starting capacitor, but using a home-made starting electronic device. Its scheme is very simple: on two

An external battery that suddenly fails is not a reason for frustration, especially if only its microcircuit is damaged. Of course, this is the most important part in this device, but if the batteries are not damaged (in many such devices

Thinking about another homemade product, I realized that there is no strong Powerbank. The idea of ​​a structure in a pipe was immediately formed. But I didn’t want to take a PVC pipe. Soldering it is not a problem, but it’s somehow handicraft. As always, I came across an old laser cartridge just in time.

There are situations when the charger for your phone is broken, and you urgently need to charge your device. But don't despair. If you do not live alone, then the problem can be easily solved. Any other phone will be suitable for charging the battery

You can get a three-phase voltage of 380 V from a single-phase 220 V in your garage quite simply.This will not take much time; the entire circuit can be connected in about 5 minutes without unnecessary complexity. For example, you need to start a powerful engine 3

This portable charger (Power Bank), unlike all manufactured models, produces not only 5 V DC, but 220 V AC, which is very advantageous and can be used in a wider range. Power - 60 W, which is for

To answer the question of how to choose a capacitor for asynchronous motors and how capacitors differ from each other, we will assemble a stand from a conventional three-phase motor with a power of 250 W. As a load we use a standard generator from

Hello dear readers! This is my first article, so don't judge too harshly. Today we will talk about improving the Chinese battery charger, namely “liitokala lii-500 engineer”.

In everyday life, solid-state relays are increasingly taking their place; they are simply not replaceable when the load is turned on and off very often and ordinary electromagnetic relays simply cannot withstand mechanical loads, wear out and break. TO

If you have an old or broken automatic washing machine, you can remove from it a good and very necessary thing - a water pump (pump).It is supposedly located at the very bottom under the drum and serves for pumping

Keeping an electric soldering iron clean and tidy is not a difficult task. However, along with a soldering iron, we always use consumables such as tin-lead solder, soldering flux, rosin, soldering oil and similar accessories.

An excellent homemade product for a summer house, which on a good summer day will provide you with hot water, heated by absolutely free solar energy. Hot water can be useful for washing dishes, hands and for other needs. solar water heater

When you repair a computer power supply or perform modifications, you need to constantly take voltage measurements. It is also sometimes necessary to measure resistance using output voltages. I decided to assemble an adapter device between the power supply and

I think that everyone is already familiar with this problem, when one fine day you take your screwdriver, turn it on, and it doesn’t work. Next, the first thing you do is try to charge it, assuming that the batteries are simply dead. But not

Solid state relays have gained popularity recently. For many power electronics devices, solid state relays have become essential.Their advantage is a disproportionately large number of operations compared to electromagnetic ones