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A well-fed woman becomes more romantic

29.08.2015

Scientists at Drexel University investigated the relationship between food and romantic feelings in women. During the experiment, young girls were assessed the activity of different areas of the brain, and at the same time they were shown pictures of romantic content, and the young ladies themselves went to the experiment either hungry or well fed.

It turned out that the female brain reacts more vividly to romantic images just after eating - the neurons of the reward system responsible for the feeling of pleasure were activated more strongly on a full stomach.

Moreover, curiously, the response of the reinforcement system in this case was the same as for food. Some time ago, the same team of neuroscientists did similar experiments with girls who had been on a diet for a while, with those who were on a diet right now, and with those who had never been into diets.

It turned out that the brains of women who once restricted themselves in nutrition react to delicious food more strongly than those of the other two groups. That is, the pleasure centers worked more strongly on the image of a chocolate cake than on a picture with a carrot, and such a reaction occurred again in the participants who ate the experiment. Then it was concluded that the danger of becoming overweight most of all threatens those who have already quit the diet: even after eating a lot, they are more likely to eat something else "delicious".

But since the reward system responds not only to food, but also to other potentially pleasant stimuli, it was decided to repeat the same thing, only this time with sexually romantic images. Among the participants in the experiment were again those who were fond of diets, and those who lived without diets - and the brain activity in response to romantic signs in the former even more closely resembled the reaction of pleasure centers to food.

On the whole, the general conclusion is this: anticipation of pleasure from "relationships" and from food is processed in many ways by the same neural structures; the increased response to “romance” after eating may indicate that the neurons previously engaged in eating have now been freed up for a new source of pleasure. True, whether this manifests itself in communication with a potential partner will become clear only after additional psychological research.

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MIC28516/7 - 70V/8A Synchronous DC/DC Buck Converters 20.10.2020

Microchip has introduced new synchronous DC/DC buck converters with a wide input voltage range (up to 70 V) and current up to 8 A. They use the latest high-voltage controllers, combined with a pair of powerful N-channel switches. The output voltage can vary in the range of 0,6...32 V with an accuracy of +-1%. The converters are based on the unique Hyper Speed ​​Control architecture, which has increased the high-Vin/low-Vout ratio at up to 95% efficiency.

MIC28516 contains a complete set of functions to protect the microcircuit in the event of abnormal situations. These features include undervoltage protection (UVLO) to ensure proper operation in the event of a power failure, soft start to reduce inrush current, short circuit protection, and overtemperature protection.

MIC28517 contains a similar set of protective functions, but instead of a soft start, it allows you to choose one of two modes of operation of the microcircuit. HyperLight Load mode improves light load efficiency, while Continuous Conduction Mode maintains a constant frequency over the entire load current range.

The converters are produced in 38-pin PQFN packages 6 x 6 mm in size and can operate in the temperature range of -40...125°C.

Main Features:

Input voltage range 4,5...70 V;
Output voltage range 0,6...32 V;
Output current up to 8 A;
Adjustable frequency 270...800 kHz;
Built-in high voltage LDO;
Configurable soft start (only for MIC28516);
Operation mode selection pin (only for MIC28517);
Overtemperature shutdown with hysteresis;
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Latest generation Power Trench keys;
Compact 6 x 6 mm PQFN housing;
Temperature range -40...125°С.

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