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Amplifier chip TDA7245, 5 watts. Encyclopedia of radio electronics and electrical engineering

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Amplifier chip TDA7245, 5 watts

Amplifier chip TDA7245, 5 watts

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Latest news of science and technology, new electronics:

Blinking of the magician and his audience 19.05.2024

Magic and illusions have always captured the attention of the public, but what happens behind the scenes of the magician and in the brains of his audience? Scientists from the UK decided to solve this mystery by conducting a new study involving ten illusionists of varying experience. Illusionists, some of whom had been practicing magic for more than half a century, others for only six months, were invited to demonstrate the same trick - the popular coin trick. Recordings of their performances during training and on stage showed that each of them began to blink significantly more often at the moment of performing the trick. The study's findings indicate that magicians' blink rate may be related to unconscious aspects of their performance. At the same time, as scientists have found, spectators also begin to blink more often, following the movements of the illusionist. This observation supports the idea that magicians may be catalysts for blinking in audiences. Additional research has shown that magicians blink more often during ... >>

Ultrasonic coffee machine 19.05.2024

Iced coffee has become an integral part of coffee culture in recent years. Therefore, engineers from the University of New South Wales decided to improve its preparation. They have developed an ultrasonic coffee machine that reduces the cold brew time for ground coffee beans from 12-24 hours to significantly less time. Iced coffee, or "Cold brew", is popular due to its smoothness, low acidity and low bitterness. It is prepared by steeping ground coffee in cold water for a long time. Unlike traditional hot brewing, which often imparts bitterness to coffee, cold brewing extracts more delicate and complex flavors from the coffee beans. The innovative system, presented by a team of engineers, introduces ultrasonic technology into the coffee preparation process. The system uses ultrasonic waves to speed up the process of extracting oils, flavor and aroma from ground coffee. This allows you to significantly reduce the time ... >>

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 ... >>

Random news from the Archive

Children's best friends are pets 06.02.2017

Psychologist Matt Cassells (Matt Cassells) and his colleagues from the University of Cambridge found that children tend to experience more positive emotions from communicating with pets than with brothers and sisters. The presence of pets has a positive effect on the development of children, in particular, on the formation of communication skills and emotional intelligence. The results of the study are published in the journal.

The researchers recruited 12-year-old children from 77 families that had at least two children and kept a variety of pets for the study. Children from these families reported a closer emotional connection with their pets than with their siblings. There are fewer conflicts in relationships with pets, and communication with them is more enjoyable, the researchers note.

“Even if the animals can’t quite understand or respond to you, communication with pets was no less intimate than with siblings. And the fact that animals can’t talk can be seen as an advantage, because this is the key to an unbiased relationship,” said the doctor Cassells.

A number of previous studies have shown that boys interact with pets more often and more. The authors of the new work saw rather the opposite picture - in their sample, girls were more likely to talk about trust, friendship and quarrels with pets, which undoubtedly indicates a closer relationship.

Scientists have also found signs of unconditional benefits of having pets in the family. The social experience and support children receive from interacting with their pets has a positive effect on their emotional resilience in adulthood, scientists say. The topic of the long-term effects of communicating with pets still occupies the attention of psychologists.

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