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Liquid cooled CPU smartphone

20.05.2013

NEC has opened up a new category of smartphones with the release of the Medias X model, designed for the DoCoMo operator. This product was the world's first liquid-cooled CPU smartphone.

The device is aimed at the female audience. It is based on a Snapdragon 600 single-chip system with a quad-core CPU running at 1,7 GHz running Android 4.2. The heat from the processor is removed through a tube with a liquid coolant to a graphite radiator located parallel to the printed circuit board of the device.

The Medias X configuration includes 2 GB of RAM and 32 GB of flash memory, a slot for microSD, microSDHC and microSDXC cards up to 64 GB, Wi-Fi 802.11 a/b/g/n/ac and Bluetooth 4.0 adapters. The smartphone has a 4,7-inch display with a resolution of 1280 x 720 pixels. The device supports LTE. It is equipped with a main camera with a 13,1 MP Exmor RS sensor and a secondary camera with a resolution of 1,3 MP. You can also note the protection against external influences, corresponding to the rating of IP58, and support for DLNA.

Product dimensions - 138 x 67 x 8,5 mm, weight - 136 g.

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Charging electric vehicles while driving 19.05.2021

The problem of battery charging is one of the reasons preventing the widespread use of electric vehicles. Perhaps the development of researchers from Cornell University in the USA, who have created a technology for charging batteries while an electric car is in motion, will help solve it.

The development was led by Khurram Afridi University, Associate Professor of Electrical and Computer Engineering, who has been working on a project for the past seven years to introduce infrastructure for wireless car charging on American roads.

In their work, the researchers used the achievements of Nikola Tesla, who 100 years ago used alternating electric fields to power flashlights that were not connected to the network. The new technology involves embedding special metal plates in the roadway connected to a power line and a high-frequency inverter. These plates will create alternating electric fields that attract and repel pairs of plates attached to the bottom of the electric vehicle, generating power.

Researchers have already made some progress. With their technology, electric vehicles with a ground clearance of up to 18 cm can be propelled. In addition, charging continues even if the electric vehicle is driven on a road with plates that are several meters apart and not completely aligned. The new technology can now fully charge the battery of a small electric vehicle such as the Nissan Leaf in 4-5 hours.

The main difficulties during the development process were related to the selection of suitable components that could withstand high voltage, as well as suitable for use in different weather conditions.

To integrate the new technology, major repairs of public roads will have to be carried out, which requires the allocation of huge funds. According to scientists, electrification should begin with busy highways and main roads in large American cities.

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