DIY electronics. Page 4

Currently, many voltage regulators are produced and most of them are made using thyristors and triacs, which create a significant level of radio interference. The proposed regulator does not produce interference at all and can be used for power supply

This is an incredibly useful device that will protect your home from short circuits when testing any appliances being tested. There are times when it is necessary to check an electrical device for the absence of a short circuit, for example, after repair. And so as not

I was sitting one evening with a book in my hands and a crazy idea came to me. Speakers in column design are already boring. So I decided to put together an unusual speaker, not like everyone else. You can take it outdoors or use it in the garage or at the dacha. I found an old one in the barn

Hi all! We will talk about how to make a completely mechanical converter from 12 V DC to 220 V AC. The converter power is 50 W, the output signal shape is pure sine. In fact, the entire installation consists of

People who often use power tools sometimes encounter the following problem: the engine of a grinder, circular saw, planer or other equipment starts very abruptly. Such a sharp start is fraught with many troubles:

Anyone can assemble such a simple regulator. Knowledge of electronics will not be required, since a ready-made Chinese module will be used, which can be purchased for a very small amount. With all this, the regulator is able to regulate power

It’s very difficult to get by without a computer microphone these days; without it you can’t use voice search, and you won’t be able to chat with a friend via video call. However, not all computers have built-in microphones; moreover, they are often

If you decide to repair broken headphones, a Bluetooth headset, or any other device that has a thin and small microcircuit, you will need a soldering iron with a thin tip. But sometimes it happens that it is this very sting, due to

As is known, in addition to the visible light spectrum, there is also infrared radiation, which is not perceived by the human eye. It is often used in remote controls to transmit various commands. Interesting fact - to

Some people still use hourglasses to measure short periods of time. Watching the movement of grains of sand in such a watch is very exciting, but using it as a timer is not always convenient. Therefore, they are replaced by

Sometimes you really want to create a bright light show at home, invite friends, turn up the music louder and plunge into the atmosphere of a disco. There are usually no problems with music and friends, but organizing color music can be quite problematic.

Pulse DC-DC converters are designed for both increasing and decreasing voltage. With their help, you can convert 5 volts, for example, into 12, or 24, or vice versa, with minimal losses. There are also high voltage DC-DC

Almost everyone has the most common soldering iron with a copper tip. This simple and useful tool is needed not only by specialists involved in radio electronics. It is also often needed on the farm, for example, to solder two wires or

A full-fledged welding machine can be assembled from four microwave ovens.Finding them in our time is not difficult, models may differ. The design is not complicated; there is no need to disassemble the transformer cores. This homemade welder is quite

A very interesting device called the “Brovin Kacher” is very popular among radio amateurs. With its help you can observe spectacular corona discharges, lightning, and plasma arcs. Many people on the Internet call the kacher a reel

A mini drone - a remote-controlled quadcopter - can be very easily made at home. You can use it for games and as a model for studying the operation of a drone. The design contains a minimum number of parts, and construction will take 15 minutes.

There are a lot of chargers on the market now. Automatic machines or not, with or without capacitance measurement. Most chargers are universal and can charge elements of any chemistry. Lithium ion and lithium polymer are increasingly used in various devices.

Many craftsmen have a cordless screwdriver in their service. Over time, the battery degrades and holds a charge less and less. Battery wear greatly affects battery life. Constant recharging doesn't help. In this

Many electric tools, especially from previous years, are not equipped with a soft start device.Such tools are launched with a powerful jerk, which results in increased wear of bearings, gears and everything else.

Surely, most people have old hard drives lying idle in their bins. From it you can make a necessary and useful thing for sharpening knives, scalpels and other objects - a miniature grinding machine with a wheel rotation speed controller.

A simple design for determining the amount of liquid in any container. Its huge advantage is that it can be scaled to fit absolutely any size and vessel without any problems. For example, you have a rainwater tank and you want

Modern man is accustomed to using electrical energy everywhere. It's hard for us to imagine the absence of electricity, on which most of our meaningful lives are based. But have you ever wondered where it comes from? What

Sometimes situations arise when you need to turn on the lights in the room every day at dawn and turn them off at sunset, i.e. simulate daylight inside any enclosed space. This may be required, for example, when growing plants

As you know, laziness is the engine of progress. It’s impossible to count how many different electronic devices people have developed in order to automate their lives.Automation has penetrated into all spheres of human life and now sometimes we even feel