Electronics from China

A welding machine has long ceased to be a transformer weighing 40 kg, which is difficult to move. Progress does not stand still, and on sale you can already find miniature 3-in-1 devices that can work as semi-automatic, regular and

Such Chinese devices are recommended for heating car interiors, bodies and engines to facilitate their starting and create comfortable conditions for drivers in winter. The power of our unit is 5 kW, supply voltage is 12 V. We will tell you how to use it

Supercapacitors have a colossal capacity compared to conventional capacitors. They also have a number of advantages over lithium-ion batteries, such as: they are not afraid of low temperatures and are not afraid of complete discharge. All this

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

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

Keeping your “swallow” clean is a normal desire of all car and motorcycle enthusiasts. But what if there is neither a water tap nor a hose at hand? No problem! An autonomous car wash using lithium batteries will help out. You can use it to wash a bicycle, motorcycle,

In this master class we will look at creating an electric pump for inflating the wheels of motorcycles and bicycles. The main advantages are that the pump is powered by a built-in battery and is small in size. Its design is such that it

Quickly wash a car, a window at home, clean the grille with a high-pressure jet - nothing is easier when using this homemade mini washer. It runs on a built-in battery and can be used anywhere. Just pour in the powerful

Let's talk about the introduction of wireless technologies. Specifically, we will talk about sound transmission via Bluetooth.For example, there is an old radio in your car that never even dreamed of Bluetooth. What can be done in this situation? Of course you can buy

I want to share with you an idea on how you can use the cassette deck of a radio or music center. Few people have such equipment left in their house, which lies as a useless burden due to the fact that magnetic recording of music on tape cassettes

Sometimes there is a situation where you need to charge a battery of a certain size, but we have a charger for a different size. There is a huge range of chargers in stores, both for specific batteries and universal ones,

Almost all good modern indoor antennas have a signal amplifier built inside. And this is another hanging wire, in addition to the antenna cable. Because the amplifier inside the antenna requires electricity to work well. It could be like

Mice and rats accompany humans everywhere. They destroy food and crops in dachas and fields, carry viruses of severe infections and even gnaw signal wires in devices.

This powerful electric bike can comfortably carry two people. Unlike the classic design of an electric bicycle with a motor-wheel, this model uses an asynchronous electric motor.The result is increased efficiency and strong starting torque.

You can make many different homemade products based on sound electronic modules. This could be doorbells, toys that speak text or some musical fragments, voice acting of important signals or car parameters, or

I have an old music center, which over time “moved” to the dacha, but I really like it. The appearance of the device is so-so, but the sound is simply gorgeous! I'm especially fascinated by its low-frequency amplifier.

The sun is an inexhaustible source of energy, and it is also environmentally friendly. Nowadays, extracting this same energy is not a problem, both for individual use and on an industrial scale. Solar modules come in a wide variety

Work spaces and garages require good lighting. You can do it yourself, even without the skills of an electrician. I propose the design of a bright adjustable ceiling lamp based on LED strip.

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

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

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.

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

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”.

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