Electronics. Page 14

If you connect a DC electric motor to a step-down transformer that converts 220V from an outlet into 12V AC voltage, then the rotor does not rotate normally. It just vibrates but doesn't turn. To

This Chinese multimeter is one of the most common. It is absolutely enough for home use and is quite inexpensive. And even breaking it or losing it for such a price is not a pity. The multimeter has everything you need

If the motor of a power tool burns out, then to repair it it is necessary to determine what is shorted - the rotor or the stator. This can be done with a multimeter. Checking with it is the most accessible method, since the private has no other equipment.

For those who often repair burnt-out engines of angle grinders, drills, screwdrivers, planes, jigsaws and other tools, an anchor tester will be very useful. This is a simple device to manufacture, which is made from a transformer. With him

A good soldering holder (aka “third hand”), with three, four, or even six flexible holders, is not cheap. The cheapest holder, more or less decent, that I found on the Internet costs about 2.5 thousand rubles. This money, of course, is not

If you suddenly urgently need to take the premises under protection, but there is no alarm system, then this is not a problem. The simplest GSM alarm, and even with a motion detector, can be made yourself from an old mobile phone. The circuit is very simple, with its assembly

Beginners who are just starting to learn the basics of soldering have difficulty desoldering microcircuits. It's really not easy, but only if you don't use tricky tricks. Let's look at the best of them.

An ordinary electric soldering iron has a much wider range of applications than it seems. You can use it to make a plastic cutter or a bag sealer. Let's look at a few ideas for its non-standard use, and a couple of tips for working with it.

An ordinary soldering iron is good for soldering small things, but when they need to work a lot and for a long time, then in this case a device of a completely different level is required.If you don’t plan to buy a soldering station, then you can solve the problem on a budget. Let's look at 3

I have an ESR T4 tester. It measures the capacitance of capacitors well, it has helped me out more than once. Externally, the whole capacitor was a capacitor with a capacity 10 times less than the declared one. Frequent use will drain the battery quickly. I use saline

Somehow I needed a block with a fixed voltage for various devices. It’s difficult to do this with smooth adjustment, and it’s also not very convenient to set the desired voltage by rotating the potentiometer knob each time. Then I decided to make it simple

Most Chinese power banks do not reach the declared capacity. In this regard, it is more profitable to buy a high-quality battery and make a Power BANK from it. It will definitely have the declared capacity, and is guaranteed not to let you down.

Surely you have not one, but rather several outdated hard drives lying around in your closet. These samples can be excellent for simple homemade projects. The HDD has brushless, brushless motors that are controlled using

Using the Arduino Nano module, you can build a simple dimmer, with which you can remotely control not only turning the light on and off, but also its brightness. All control is done from your smartphone without any remote control.

In fact, the differences between a conventional diode, which is used to rectify voltage, and a photodiode, which records light radiation, are very small. They have approximately the same crystal, with the same operating principle. The photodiode is also capable

A broken hair dryer contains many useful parts that can be useful for various homemade projects. This is primarily a heating coil and a motor. If you come across a broken hair dryer, try making one from its spare parts.

Headphones come in two main types – wired and wireless. Wireless headphones are good for everyone; the cable does not dangle, they are comfortable, almost weightless, etc... But they have one huge drawback - even the most expensive wireless headphones, from the very

To solder efficiently and quickly, you need practice, a good tool, and knowledge of dozens of nuances. Let's look at 10 tips and life hacks that will take your soldering skills and convenience to the next level. Many of them are quite

Let's consider creating a tracked vehicle with a fairly basic design that can be assembled in literally a couple of evenings. The entire structure can be divided into two parts - the tracked chassis and the electrical part, which will

Many everyday problems can be solved using simple homemade tools. Let's look at 11 useful life hacks, most of which can actually come in handy right now. These are worthwhile, proven solutions and advice.

You can make a very powerful LED lamp for a headlight with your own hands from purchased LEDs from Aliexpress. It is simply incredibly bright, and most importantly, it is repairable. A homemade light bulb is simply a salvation if you buy a factory one for yours.

This boost converter is capable of increasing AC voltage from 220 V to DC 1850 V. Essentially, it is a multiplier that increases the input voltage by about 8.5 times and rectifies it. Sometimes it is necessary, for example, to do

If you have an old or broken laptop lying around, then its parts and modules can be given a second life and successfully used for the benefit of the business. This article will talk about how to connect a camera from a laptop to a USB cable and make it

This converter is incredibly easy to manufacture; it contains only 1 transistor. Made entirely from parts from an old computer power supply board. Can be used to power a variety of LED lamps, LED strips,