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High-speed router Asus RT-AC3200

28.07.2015

Asus introduced the RT-AC3200 router. The novelty is equipped with six removable antennas that support two channels of Wi-Fi 802.11ac (2,4 GHz / 5 GHz) standard - three antennas for transmitting and three antennas for receiving. This solution has allowed Asus engineers to achieve unrivaled performance to date, with a maximum data transfer rate of 1300 Mbps (1,3 Gbps) on each frequency in the 5 GHz band.

With support for Broadcom TurboQAM technology, 802.11n (2,4GHz) Wi-Fi throughput increases from 450 Mbps to 600 Mbps for compatible devices. Thus, theoretically, the aggregate data transfer rate of the router can be 3200 Mbps, which, for example, is 3 times higher than the wired Gigabit Ethernet standard.

Asus engineers specifically point out that the average router on the market using the old 802.11a/b/g Wi-Fi standards may slow down the data transfer rate of the faster 802.11ac Wi-Fi standard. ASUS RT-AC3200, in turn, uses a three-band Tri-Band Smart Connect technology, which automatically selects a channel for each device based on transmission speed, signal strength and congestion without user intervention.

Of the pleasant features, we note the presence of a hardware key on the device case that disables the operation of the LEDs - a very convenient solution if the router is in your bedroom.

The recommended retail price of the Asus RT-AC3200 is 280 USD.

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Low temperature lithium-ion battery 10.03.2018

Conventional lithium-ion batteries do not tolerate low temperatures very well. The results of measurements confirm that even at -20 ° C, such batteries begin to quickly lose capacity, which can lead to an unexpected shutdown of the mobile device.

Chinese scientists have created a lithium-ion battery that works normally at temperatures down to -70 ° C. The developers claim that such batteries can be used in the most severe climatic zones of our planet, and as technology develops, in outer space.

To achieve such outstanding results, a team of scientists from Fudan University used a low-temperature conductive ethyl acetate as an electrolyte and two organic compounds as an electrode.

On the one hand, when creating a new battery, inexpensive available materials were used, which at the same time are environmentally friendly. However, there is a problem that so far prevents the commercialization of the development. The fact is that the density of the energy cell in the new battery is still too low to match the lithium-ion batteries used in the industry.

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