Battery discharge indicator. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Chargers, batteries, galvanic cells
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A simple indicator that starts beeping when the battery is discharged to a certain value, which depends on the zener diode used.
Publication: N. Bolshakov, rf.atnn.ru
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Latest news of science and technology, new electronics:
Machine for thinning flowers in gardens
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In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
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| Random news from the Archive Intelligence is more important than vision
16.11.2012
Researchers at the University of Virginia found that the ability of the brain to process an image is even more important than the ability of the eyes to see the surroundings. In other words, the eyes may collect less information than the brain subsequently presents. The secret of this "miracle" lies in the processing of the picture, which the brain is able to complete with the missing elements.
The studies were carried out on fruit fly larvae, whose eyes have only 24 photoreceptors (the human eye contains more than 125 million photoreceptors). Surprisingly, despite the extremely primitive organs of vision, fly larvae can confidently navigate in space and recognize images that, in theory, should cause them difficulty. In particular, the larvae successfully detected their counterpart attached to the bottom of the Petri dish. The attempts of the larva to free itself attracted other larvae, which aroused the interest of scientists.
After several further experiments, the scientists found that the almost blind larvae nod their heads from side to side, "scanning" space. Just from a couple of dozen pixels of such a "panoramic shooting" the brain of the larvae was able to create a recognizable image. Similarly, an astronomer, with a small telescope and many observations, can analyze a blurry image and reveal a lot about a distant planet.
The scientists note that people with severe vision loss also tend to use "scanning" head shakes as a means of imaging. In addition, visually impaired people who have received experimental retinal implants with a small number of pixels also often use head shaking to collect the maximum amount of light. This helps the brain form recognizable mental images with a minimum of input information.
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