Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library

DIAGRAM. Free technical library for hobbyists and professionals

Free technical library for hobbyists and professionals

As of May 18, 2024 in the database 500000 articles

Random section of the Free Technical Library:

Batteries, chargers

Read interesting articles:

Automatic Charger, Automatic Charger, Automatic Car Battery Charger, Automatic Lead Acid Car Battery Charger, Car Starter Charger, Automatic Voltage Polarity Reverser for Battery Charger, Car Battery Recovery and Charging, AC Acid Battery Recovery , Rectifiers with an electronic regulator for charging car batteries, Rectifier-stabilizer for a motorcycle YAMAHA XV 400, Desulfating charger for a car, Charging car batteries with asymmetric current, Charging battery lights from the on-board network of a car, Charger-desulfating machine for car batteries, Charger for car batteries ... all articles of the section >>


Regularly replenished compilation the most interesting news of science and technology, new electronics. Large archive of articles from 2000 to 2024. Based on materials from periodicals and the Internet.

Latest news of science and technology, new electronics:

The speech of sperm whales is similar to that of humans 18.05.2024

In the world of the ocean, where the mysterious and unknown coexists with the studied, sperm whales, with their huge brains, are of particular interest to science. Researchers, working with a huge array of audio recordings collected during the Dominica Sperm Whale Project (DSWP) - more than 8000 recordings, seek to unravel the secrets of their communication and understand the structure and complexity of the language of these mysterious creatures. By studying in detail the recordings of 60 sperm whales in the eastern Caribbean, scientists have revealed surprising features of their communication, revealing the complexity of their language. "Our observations indicate that these whales have a highly developed combinatorial communication system, including rubato and ornaments, which indicates their ability to quickly adapt and vary during communication. Despite significant differences in evolution, sperm whales have elements in their communication that are characteristic of human communication," says Shane Gero, a biologist at Carleton University and director of the CETI project. Issl ... >>

Electron spin for quantum information transfer 18.05.2024

The transfer of quantum information remains one of the key tasks of modern science. Recent advances in the use of electron spin to expand the capabilities of information transfer in quantum systems have become very important. Researchers at Lawrence Berkeley National Laboratory are pushing the frontiers of quantum information science by experimenting with the possibilities of electron spin. Electron spin, a natural quantum bit, is a potentially powerful means for storing and transmitting information in quantum systems. Magnon wave packets, collective excitations of electron spin, have revealed their potential to transmit quantum information over significant distances. The work of Berkeley Lab researchers has revolutionized the way such excitations propagate in antiferromagnets, opening up new prospects for quantum technologies. Using pairs of laser pulses, scientists disrupted antiferromagnetic order in one place and simultaneously studied it in another, creating ... >>

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

Random news from the Archive

New spacesuits for astronauts from Boeing 06.02.2017

Astronauts who go into orbit aboard the Boeing Starliner spacecraft will wear lighter and more comfortable spacesuits than the previous model (Advanced Crew Escape Suit, ACES) for the Shuttle program. The new suit, called "Boeing Blue", meets NASA's requirements for functionality and safety.

As you know, Boeing continues to prepare the Starliner spacecraft for the first test flight, which should take place next year.

The new suit is much lighter than the previous model, and also has more flexibility due to the use of modern materials. The visor and helmet, as well as boots, are an integral part of the suit, unlike removable gloves with a touch surface. The ventilation system allows you to provide a more comfortable temperature and instantly seal in case of emergency.

The entire suit with accessories weighs about 20 pounds (9 kg), about 10 pounds lighter than the ACES model used by the Shuttle astronauts. The material of the new Starliner suit allows water vapor to escape while keeping the air inside. This property contributes to better ventilation without compromising the safety of the astronaut. Flexible material at the elbows and knees gives astronauts more freedom of movement, while zippers allow them to adapt the shape of the suit to stand or sit.

“The most important thing is that the suit will keep you alive,” says astronaut Eric Boe. “It’s much lighter, more form-fitting, and it’s simpler, which is very important. much better for that."

Other interesting news:

▪ Eyes heal with light

▪ Autonomous fighting robots of the Pentagon

▪ Powerful quantum microscope

▪ Fingerprints tell about nationality

▪ New form of magnetism discovered

News feed of science and technology, new electronics


Random articles


Articles, reference materials, encyclopedias


Tricks and tricks with detailed explanation


Entertaining experiences at home


Encyclopedia of radio electronics and electrical engineering. Articles with diagrams, illustrations, comments

In section Encyclopedia of radio electronics and electrical engineering presents the most interesting electronic designs, diagrams, descriptions, reference materials with illustrations and explanations.

For any article Encyclopedias you can leave your comment.


Encyclopedia of radio electronics. The best articles for radio electronics


Encyclopedia of electrical engineering. Best Articles for an Electrician


Effective means for relaxation and good mood

A random story from the life of a radio amateur:

1980 Vacation. Gudauta (Abkhazia). My wife and I rent a room, like many other vacationers. Near the sea, the beach - LEPOTA! I am already an experienced radio amateur, and 5 years of work at the TEMP television factory also mean something. And here is a neighbor of the hostess from the questions of who, where does he find out that I am a radio engineer. Began persuasion to fix their TV. I explain: "I have no tools." He says: "Let's go, dear, we'll find a tool, just go." Well, the TV is unified, it seems to be familiar. No image, line generator not working. But you need a screwdriver. Bring a flathead screwdriver from a sewing machine. Doesn't fit - I can't even remove the back cover. I had to grind it on a piece of granite. Now I'm almost Robinson Crusoe. Removed the lid. Suspicion fell on the high-voltage capacitor in the circuit of the second grid of the generator lamp. Need side cutters. Bring tongs for crushed sugar. I managed to bite the capacitor. What to replace it with? The tone block has the same one, but how to solder it? They turn on the primus and I use a red-hot nail (I have tongs) to remove the excess tin from the installation (yes, they didn’t save on trifles). But just do not solder with tin. I ask you to bring aspirin, because it is useless to ask for rosin. "What, darling, do you have a headache?" I explain why. They look strange and do not believe. In short - I turn on TV - it works! People have a holiday, because otherwise TV had to be taken to Sukhumi for repairs. And this is far, long, and expensive. And my wife and I have a holiday. What a treat it was, wine... And most importantly - I felt like a magician, an all-powerful magician in the field of electronics... I almost burst. It was nice that in unsanitary conditions (in the sense of conditions for repairs) everything worked out. Now you can go to a desert island, but you don’t know if there are TVs there?
Other stories from the life of radio amateurs | Random fun story

Random fun puzzle:

If one letter is taken from the end of the puppy’s nickname, then new words will be obtained each time. Which?

Other fun puzzles | Random fun puzzle

Random Question Quiz Online:

What strait separates Africa and Madagascar?

Other Quiz Questions | Random five questions

Random aphorism:

"Медовый месяц заканчивается, когда домашние туфли мужу приносит собака, а ворчать начинает жена" (Жа Жа Габор)
Other aphorisms | Random aphorism

Random proverb:

Хоть волк и одряхлел, но на одну овцу сил хватит. Киргизская пословица
Other proverbs of the peoples of the world | Random proverb

Random phraseological unit:

Limit, don't cross it
(Рубеж, грань которые переступить нельзя)
From the Bible (Church Slavonic text). In the Old Testament (the book of the prophet Daniel, 6:7-8) it is said (translated into Russian): "And so confirm, king, this definition and sign the decree so that it is unchanged, like the law of Media or Persian, and so that it does not has been violated." The "limit" in this case is a definition and a decree that cannot be transgressed or violated.
Other phraseological units | Random phraseological unit

Random phrase in Latin:

Esse genus. - Будьте любезны.
Other phrases in Latin | Random phrase in Latin

Random fact "Did you know?":

В страны Европейского сообщества разрешено импортировать еще 12 сортов генетически модифицированных растений: 10 сортов, предназначенных для питания человека или животных, и два сорта цветов. В сумме сейчас в Европе разрешены 70 сортов растений с измененными генами.
Other Facts "Did You Know?" | Random interesting fact

Random article of the Great Encyclopedia for Children and Adults:

Where is the largest textbook?

In one of the libraries in Vienna. There you can see this human-sized anatomy textbook: height 1,90 m, width 0,9 m. It was printed in 1830 in Vienna.

Other articles of the Great Encyclopedia | Random article of the Great Encyclopedia

Please select your language


Home page | Library | Articles | Website map | Site Reviews