Electronics. Page 5

Microwave ovens are equipped with powerful transformers, which, after simple modifications, can be used to make a welding machine. The device assembled from them is not inferior to a purchased one when welding with electrodes with a diameter of up to 3 mm. So

To desolder SMD components from the board, you have to tinker, since it is difficult to simultaneously melt the solder on all legs and remove the desired part. For this purpose, a desoldering pump is used to remove the solder from the individual legs, releasing them. This

By combining inexpensive, available electronic components, some of which can be removed from a fluorescent light bulb, you can obtain a device for turning on 220 V LED lamps from an 18650 battery. Using the device, it is possible to test

Powering a digital watch requires very little energy. Thanks to this, instead of a AA battery, they can operate on a water battery for some time.Let's look at how this can be done.

The first advantage of this metal detector design is its simplicity and the minimum number of elements in the circuit. The second significant advantage is the sensitivity of the device. Well, the third plus is the elementary setup and high repeatability of the circuit.

Drilling wells for installing poles or planting seedlings requires a lot of effort, especially on compacted soils. The task is greatly simplified if you use a cordless drill, since it does not need to be rotated. Make this device your own

Induction heating is faster than any furnace. With its help, you can heat a steel part red-hot in a matter of seconds. Having a regular induction cooker, you can assemble a heater that will allow you to heat the metal

The more elaborate and modern a chandelier looks, the more expensive it is. Designer lighting fixtures sometimes cost tens or hundreds of times more than the actual price of the material spent on their production. Therefore, if you have free time and

An induction coil can heat metal objects extremely quickly.If you assemble it according to the proposed scheme, you can get an induction boiler for boiling water in a steel container such as a cup or pan. This is quite working

An induction cooker comes in different sizes and runs on different voltages. It can even be powered from a rechargeable battery, and assembled on the basis of an out-of-date hard drive. After all, the base of the disk is polycarbonate and aluminum - materials

A quickly heated and efficient portable soldering iron from a low-voltage power source is assembled quite simply and quickly using two power N-channel IRFZ44N field-effect transistors. They are ideal for driving heavy loads as

Almost everyone who has made an indoor antenna from coaxial cable has been surprised by its simplicity and high sensitivity. Saving money that would have gone towards buying an antenna was also an extremely pleasant surprise. Below are more

Often, a hair dryer fails due to cracks in the case or defective buttons, while its heating element and fan continue to work perfectly. In this case, these parts can be used to make an electric hand dryer.

Electricity is constantly becoming more expensive, and in some places it simply does not exist.If there is a stream flowing at your dacha or farmstead, then you can build a mini hydroelectric power station from simple materials and receive free electricity. However, the stream can be replaced with an artificial one

Aluminum is a rather difficult metal to solder, since the oxide film prevents solder from sticking to it. You can get rid of it in different ways, often time-consuming. Few people know that aluminum can be tinned by copper plating.

To restore a home control panel, say, for a TV, home craftsmen resort to non-standard and unprofessional solutions: they glue foil to the back of the buttons, as here. Or they are trying to restore it themselves in a different way

Of course, this does not happen often, but it still happens that a photodiode or photoresistor is urgently needed, but it is not at hand. A small life hack will help you convert the optocoupler into the desired element.

You should not throw an outdated or non-working tablet computer into a landfill. It has many parts that can successfully serve for quite a long time. One of these useful parts can be called a Wi-Fi module. As a rule he

What amazing and incredible finds can be found on Ali Express. In this article you will get acquainted with another know-how of the Chinese industry - a wall hook with a USB connector.If you see this thing for the first time, you can spend a long time

Many people know that a photoresistor is a simple electrical element for creating a light sensor. Together with the Winston Bridge, it is often used as a machine to turn off artificial lighting. You can also use it

Even with an ordinary, cheap Chinese adapter you can “catch” remote WiFi points at a distance of about 1-3 km. But for this, the WiFi adapter needs to be modified with a small antenna, which can be made from trash found in almost every home.

There are many ways to solder a conductor to an aluminum surface, but this one is a little special. This method is chemical and consists of pre-coating aluminum with a microlayer of copper. But don’t be afraid, because everything is extremely

It turns out that you can solder a wire to any aluminum surface with regular solder, without special flux. Most DIYers are familiar with the method of soldering under a layer of machine oil. Yes, indeed, the method works, but it is not very effective.

Please note that this circuit is made without a relay and a microcircuit. Its automatic shutdown occurs due to the reference voltage created by the zener diode. But the device is designed more for charging new batteries, since it