Electronics. Page 23

Currently, “electronic cigarettes” are quite popular. But they often fail or are simply thrown away due to a dead battery or a broken power button. However, this device can be used to make a good small-sized

Any power tool breaks down sooner or later. The main reason is a malfunction of the electric motor. Taking a tool to a workshop for diagnostics is expensive and time-consuming. Therefore, it is better to find the cause of the breakdown yourself.

The laptop lay idle for some time and after turning it on the battery refused to charge - a situation, I think, that is familiar to many. There may be other reasons and cases as a result of which the built-in battery fails to operate.

Surely everyone has had a situation in their life when it was necessary to solder a thin wire that had fallen off, or to replace a very small SMD component by soldering, but only a regular soldering iron was at hand. Perform fine soldering with a thick tip very

Very often, nickel-cadmium batteries refuse to charge at the moment when it is so necessary. They are especially capricious and do not tolerate neglect. They can fail for the following reasons: overcharging, being left in storage for too long

I once bought a centrifugal pump for watering my garden in order to pump water from a nearby well. And I thought, why run a 220 V network to the well and waste electricity when you can convert the pump to low-voltage power and

Do you have a couple of old telephones lying around in your closet? - There is no need to throw them away - make a very simple intercom out of them - an intercom. With it you can establish wired communications over hundreds and even thousands of meters. Everything is free and

There are quite a few examples on the Internet of how you can restore a dead screwdriver battery without even opening it. I just have two batteries lying around that cannot be charged, even if they charge all night. The recovery method I

The chemical power source that will be made in this master class has quite a significant power to obtain with it a voltage capable of powering 220 V network devices. Surely you have seen articles on the Internet where

One day I saw how the sun's rays, refracted in a glass bottle of water, create the impression of a magical light source. It seemed like there was a little sun in my bottle. I was so fascinated by this spectacle that I began to wonder how

Anyone who has an uninterruptible power supply (UPS) for a computer at home knows its one significant drawback, which costs its owner a pretty penny. This is, of course, the fragility of its batteries. Usually, if you're lucky, they live 3

An adjustable power supply is a necessary thing. In general, I think there should be a sufficient number of power supplies. For small needs, my father needed an adjustable power supply. Having studied our deposits, we collected a number of components. I decided to collect

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,

An excellent use for wood waste is the production of fuel briquettes. They allow you to cope with the ever-increasing amount of shavings, sawdust from work in carpentry workshops and garbage on the farm. Things that are usually thrown away or burned

I am sure that at least once in your life you needed a portable 220 V generator. With the help of it you needed to power something in conditions where a regular network is not available. In general, the gasoline generator itself is an extremely useful thing and will come in handy

In this article we will look at how to make a solar cell phone charger. This device is easy to manufacture, has low weight and dimensions, but performs a very useful function. It will become an indispensable assistant

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

In this article I want to share with you my experience in creating switching power supplies. We will talk about how to assemble a switching power supply using the IR2153 chip with your own hands. The IR2153 chip is a high voltage driver

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

This manually rechargeable battery can be used to start your vehicle's engine when the main battery is low. In addition, this device can power various inverters with loads, LED lamps, charge smartphones, etc.

This is a full-fledged and real air conditioner, unlike those that are given in large quantities on the Internet. There are no bottles of ice water, nor ice itself. And the principle of operation is quite similar to household models. I will say more that earlier, on

The laptop power adapter case is glued together in two parts with special glue and does not have any other fasteners. If an accident happens and the power supply breaks down, then to repair it you must first disassemble it. How to do this if

In places without electricity, there is a problem with recharging smartphones and other equipment. Using a power bank is only a temporary measure. It is much safer to acquire a free alternative source of energy. A homemade one will do just fine.

With the help of this small pocket generator, you can immediately charge not one, but several cell phones, light an LED lamp, and there are other possible uses for it that didn’t occur to me. It produces a pure sine wave