Good afternoon, dear readers! Today we will assemble a simple power source for low power loads. Immediately make a reservation, the power of the circuit can be increased, but more on that later.

Now very often you can find outdated kinescope TVs in the garbage dump, with the development of technology, their packs are not relevant, so now they are mostly disposed of. Perhaps everyone saw on the back wall of such a television an inscription in the spirit of "High

Energy-saving fluorescent lamps are not so durable and gradually fail. Their time is slowly coming to an end and they are being replaced by LED lamps. LED lamps consume significantly less energy, more durable and not

In this article, we will consider the process of creating a very necessary and interesting electronic device that will allow you to play wav format files directly from an SD, microSD or mini SD memory card. You can record a music file to a memory card,

I will show how to make a universal LED illumination of something, whether it be at least the lighting of the working area or the illumination of a bed niche. The LED strip will light automatically when an object is approaching and will also automatically turn off after

Electric bicycles are trending today. Even the well-known car companies, no, no, and they will present a model of a futuristic bicycle of the future, whose work is based on clean cheap energy. Well, lovers of handicrafts with their own hands also do not bypass

Often on sale you can find such devices that are installed on a flower pot and monitor the level of soil moisture, including, if necessary, a pump and watering the plant. Thanks to such a device, it will be possible to safely leave for

In our world full of various machines and automated mechanisms, bicycles stubbornly do not lose popularity. They are remade, modernized, and new models of incredible shapes and sizes are created. But at the heart of them are the same two wheels. AND

Sometimes there is a desire to assemble some kind of electronic device, which is not very complicated, but at the same time very interesting. And if at the same time it also turns out to be useful - in general beauty. Those people who don’t know what to do on a long weekend,

Perhaps even a person far from electronics has heard that there is such an element as a relay. The simplest electromagnetic relay contains an electromagnet, when a voltage is applied to it, the other two contacts are closed. Using relay

External speakers, USB speakers and speakers and headsets today are conquering the market for electronic devices. Inexperienced consumers find it difficult to figure out all of these new products. Sometimes it turns out that most of them are

Good day, dear readers! Today we will focus on the assembly of a simple low-pass filter. But despite its simplicity, the filter is not inferior in quality to store analogues. Let's get started! Main characteristics: Cutoff frequency 300 Hz,

As you know, not a single electronic device works without a suitable power source. In the simplest case, a conventional transformer and a diode bridge (rectifier) ​​with a smoothing capacitor can act as a power source.

In our world, quite a lot of people are engaged in home-made experiments in home laboratories and workshops. For some, this is a way to assert themselves, for others, a desire to develop their abilities. And what if it was an experiment from hastily

Alternative energy sources today are the most fashionable area in science. Advanced technologies vying compete in obtaining cheap electricity from the energy of air, sun, water. And absolutely all of them are fighting for maximum efficiency. After all, if

Hello, today I will tell you how to make an adjustable power supply based on lm317 chips. The circuit will be able to produce up to 12 volts and 5 amperes.

Who would have thought that the simplest inverter can be made without the use of transistors and complex circuits. Last time I showed how to make an invert without transistors on a relay. As it turned out, this is not the only way to build an inverter. I will show how

Now a lot of digital technology is failing, computers, printers, scanners. Time is like this - the old is replaced by the new. But a failed equipment can still serve, although not all, but its individual parts for sure. For example, in printers and

A useful homemade product that is sure to come in handy almost anywhere where there is USB: Home for backlighting: you can connect at least to a computer, even to a laptop. Camping, fishing or hunting: can be connected to an external battery (power

Hello friends. Today I will tell you how to make a small power amplifier on a tda2822m chip. Here is the circuit I found in the datasheet of the chip. We will make a stereo amplifier, that is, there will be two speakers - the right and left channels.

Agree, it’s very convenient when there is a USB socket for charging gadgets near a regular outlet. There is no need to charge the main outlet. Now almost all portable equipment is charging from USB ports and this is a big plus, since it is not necessary

How to use a candle to charge a cell phone? Very simple - for this you can assemble a simple thermal power plant from just a few very affordable elements. This thing is pretty cool, you can take it with you on a camping trip or fishing and

This workshop will be a bit controversial and will cause more than one scattered opinion. I want to share how to make a powerful rectifier from a microwave oven transformer - a power supply, to the voltage I need. Very often microwave

The history of hydropower originates from a simple water wheel, which it occurred to our ancestors to install on the rapids of a river. At first it was used for a mill, thereby facilitating the work of millstones. People later learned to use force