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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

PLM-40E - 40W Step Dimming LED Driver 14.07.2016

Mean Well has expanded its range of low cost indoor LED drivers. At the moment, the new PLM-12E series has been added to the existing PLM-25E and PLM-40E series with 40W output power and only 24mm thickness.

The power supply has power factor correction (PFC; PF>0.95), operates in current stabilization mode (CC) and is available for the following standard load current values: 350, 500, 700, 1050, 1400, 1750 mA.

In addition to the low profile, a feature of the new series is the possibility of 3-step dimming through a conventional switch without additional devices. When switching off for a short time and then switching it back on (less than 2,5 sec / OFF-ON), the output current is reduced in steps of 100% - 40% - 10%.

In order to reduce the cost, in the new PLM-40E series, the manufacturer has abandoned the universal input (100/240 V). The input voltage range was chosen to be 180-295 V, which is in good agreement with our domestic electrical networks. For fixtures that do not require operation in 100/115 V networks, this series will be the best choice in terms of functionality and cost.

Main technical parameters and features of PLM-40E series:

Output power 40W
Stabilization mode - current stabilization
Output current from range: 350, 500, 700, 1050, 1400, 1750mA
Step dimming by switch
Input voltage range 180-295V
Power factor >0,95
Efficiency 88% (typ.)
IP30 (plastic housing with enclosed terminals)
Class II for electrical safety (grounding is not required)
Protection against short circuit and overheating
Operating temperature range -30°C...+40°C
Dimensions (LxWxH) 175 x 42 x 24 mm

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