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About the repair of imported lanterns. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Power Supplies

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When repairing imported lanterns powered by a ~ 220 V network and a 6 V battery, the LDS converters fail. Repairing and rewinding them, the following diagram came out below (see figure).

About the repair of imported lanterns

The wire is used of the applied diameter according to the burnt sample.

Author: V.E. Borokha

See other articles Section Power Supplies.

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Augmented Reality Contact Lenses 12.03.2023

Korean developers, in collaboration with scientists, have introduced contact lenses that can work as an augmented reality screen.

Developers from the Ulsan National Institute of Science and Technology assure that the operation of such lenses does not require a large amount of energy. The gadget can fully display white, blue and green spectra.

"The main disadvantages of known AR devices are the price, experimental technologies and bulky design. Our contact lenses are inclusive, comfortable and can be worn for several hours without problems," the scientists note.

The lenses were based on electrochromic (color-changing) displays based on Prussian blue pigment. In the pilot version, the lenses contained limitations in the display of words or pictures, since at first it was difficult for scientists to apply microcircuits to an accessory using the galvanization (electronic current) method.

In the new version, experts have replaced this technique by printing chips and displays on a 3D printer. As a result, the team received a miniature AR screen. Experts tested its action experimentally - the screen indicated the route to the user with lenses through GPS coordinates, which the person received in real time. The lenses helped the person to reach their final destination.

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