Electronics. Page 28

Good afternoon Now we will assemble a low frequency amplifier. The TDA2004 microcircuit is taken as the basis. It has two outputs, but the power of each individually is 8 watts, which is not so much. Therefore, we will use bridging. Such inclusion

After I learned this method of incredibly quickly cleaning a soldering iron tip from carbon deposits, the question immediately appeared in my head: “Was it possible to do this?” Before that, like most radio amateurs, I took sandpaper and manually cleaned off the carbon deposits from

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

Cooling fans are now found in many household appliances, be it computers, stereo systems, or home theaters.They do their job well, cool the heating elements, but at the same time they emit a heart-rending, and very

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.

When you assemble any electronic homemade product, you need a power supply to test it. There is a wide variety of ready-made solutions on the market. Beautifully designed, have many functions. There are also many kits for DIY production. I'm already not

Many modern audio systems, be it a stereo system, a home theater, or even a portable speaker for a telephone, have an equalizer, or, in other words, a tone block. With its help, you can adjust the frequency response of the signal, i.e. change quantity

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

Another option for a simple, low-power, but very useful amplifier, which is based on the LM386 chip. Its maximum output power is 0.5 watts, which is quite enough to cover a small room. The advantages of the amplifier

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.

A great craft for the summer is to make a miniature refrigerator with low-voltage power. A variety of supply voltages (220 V, 12 V, 5 V) makes it possible to use such a refrigerator almost anywhere: in the car, office, home, etc. This

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.