Electronics. Page 22

Every microwave oven has a drive to rotate the food. This is necessary so that the micro waves evenly affect the prepared food from all sides. If you have an old and unnecessary microwave, then this drive can be used from it

An incredibly simple metal detector circuit that even a novice radio amateur can master. The sensitivity of such a device is comparable to commercially produced models. All this is achieved thanks to the use of ordinary

Food-grade aluminum foil is sold in almost every grocery store. Of course, we all know its main use. But there are other ways to engage and use this interesting material. Here are three ideas below.

Optocoupler PC817 is a very common galvanic isolation element.It is available in almost every switching power supply, be it a phone charger or a computer unit. So it won't be difficult to get it. Based on this transistor

A large number of used microwave ovens can easily be found in any landfill. One of the valuable parts that can be removed from a microwave oven is the plate drive motor. This is a 220 V synchronous electric motor with a gearbox

Anyone who is familiar with the design of an asynchronous motor knows very well that it will not simply work in generator mode. The whole point is the absence of a magnetic field capable of creating an electromotive force in the windings of its stator. But what happens if

An electric motor from a washing machine is very easy to find due to the fact that it rarely fails compared to other components, and the machines themselves are often thrown into landfills. This is a very valuable thing for DIYers, I take into account how many simple

In washing machines, the automatics most often fail, followed by bearings and rubber products. The engine is the most reliable component; it is used in the manufacture of various home machines. But for this you need to be able to change

Many people like to listen to the radio - at home, in the car, at work, while doing what they love, because broadcasting on VHF frequencies (88-108 MHz) is carried out in every major populated area. However, few people know that a high-quality radio receiver on a microcircuit

Sometimes there is a need for electric welding of small parts that will not be subject to serious load. In the absence of a welding machine, this problem can be solved using a battery and a graphite rod from a AA battery.

Despite the abundance of powerful microcircuit and transistor audio amplifiers, there is always a need to have a small portable stereo amplifier that does not require powerful power. Just such a thing can be built on the TDA1517P chip, its other

I decided to remake my laboratory power supply. Although it is reliable, it is heavy and takes up a lot of space. There is never enough on the desktop. Planning a reshuffle. I decided to hang a wall shelf and there is plenty of space under it. The idea came quickly, I do it

Many LED bulbs and spotlights require 12V to power them, which requires you to buy or obtain a power source from somewhere. In fact, you can make it yourself using inexpensive parts.

Soldering wires is a difficult skill that not everyone can do. To solder well, you need practice and no rush. There is an alternative very simple and faster way to connect wires using special heat shrink sleeves with

Nowadays many acoustic speakers are sold that have a card reader. You can install a memory card or USB flash drive. This is of course great, but what if someone wants to listen to music from their phone? You need to pull out the card and insert it into

Physics is an exact science with its own laws, which can be demonstrated through spectacular experiments. Let's look at 6 interesting experiments. 1. Generating electricity from temperature differences...

If there is no DVB-T2 television signal of sufficient strength, it becomes necessary to use an antenna with an amplifier. Such equipment can be easily assembled with your own hands from purchased parts, the cost of purchasing which will be about 1 dollar.

The TAP subscriber splitter is an installation element used to create branches from one TV trunk to several consumers, while maintaining a pass-through signal. With its help, the television signal from the main cable is divided between

Walk-through switches are usually used in long corridors or over long distances when you need to turn lights or electrical appliances on or off in one place and turn them on or off in another. In this case, you have to pull 3-wire and

A pulse soldering iron differs from a regular one in that it heats up almost instantly. It can be used within a few seconds after being plugged into the network. At the same time, the pulse option is economical, small in size and allows

We propose to assemble a simple circuit that clearly demonstrates the operation of a pulse counter with a built-in decimal decoder (decoder) - running lights. Refusal to manufacture a printed circuit board for this homemade product allows you to quickly assemble and launch

When soldering, it is very convenient to use solder paste. You can buy it or make it yourself. When heated, homemade paste flows better than factory paste. When soldering twists, it penetrates deeper, which ensures a reliable connection. Its application

They asked me to make a charger. The main difference from many is the presence of 10 channels. People are going to charge a number of lead batteries. They have batteries installed in laser tag weapons. This charger

This article will help you make something useful in everyday life, please yourself and your loved ones, and understand the basics of radio technology. It will take you very little time to make running lights. The necessary radio components can be purchased at