Converter on a CD4047 chip for a radiotelephone. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Converter on a CD4047 chip for a radiotelephone. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Voltage converters, rectifiers, inverters

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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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Organic conductor sensor 12.04.2005

Swedish scientists have come up with cheap humidity sensors made from an organic conductor. Polymer transistors, like light-emitting diodes or batteries, have a huge advantage over silicon chips: they can be printed with an inkjet printer, and by no means in an expensive clean room.

PhD student David Nilsson from Linköping University (Sweden) came up with a humidity sensor based on them. According to his idea, water molecules affect the conductivity of the polymer, which inevitably affects the behavior of the polymer transistor.

And the battery that is needed for the operation of the device, and the sensor, and the display that reflects the readings, the scientist suggests printing on the same piece of paper. "In a similar way, you can make sensors for the acidity of solutions or blood sugar meters," says David Nilsson.

However, the most interesting application of polymer transistors is flexible displays: if you apply an electrical signal to each pixel, you can change its color by changing the voltage and thus display text or a picture. And this is the way to the long-time dream of conservationists - to abandon the insane waste of paper for printing disposable newspapers and replace them with indistinguishable in appearance, but reusable devices: they will display an electronic version of the newspaper loaded into the display memory card.

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