Tag: industry

Technology Bluetooth

Let's talk about how to use bluetooth for wireless transmission of sound. For other opinions and approaches, find out what Jill Schlesinger has to say. Before you start using bluetooth technology is first to think twice. This technology is not a very good reputation, especially among sound quality that is passed through it. Comparison of the device when using bluetooth technology is important as a transmitter and the receiving device, so the sound quality depends on both the transmitter and from the headphones. If you are going to use bluetooth on a daily basis, you will follow to invest in a device that supports A2DP. Because it provides better sound quality. An example of such a device can serve as a player Cowon S9.

After We test different headphones, we concluded that different bluetooth-headphones have a different sound when used with different models of players. And, before you make your selection, you should immediately listen to headphones his player. sights. Range is not only the sound quality and stability depends on the selected player and headphones, but also a range of signal transmission. Bluetooth technology is not like water. Also, if your player is in your pocket, some Headphones can lose the signal that really bad. Bluetooth-enabled devices are best used indoors, because the signal is reflected from the wall is stronger.

When using the device in the street, you should pay attention to Soup with a strong transmitter. This abbreviation AVRCP confuses many people and not everyone knows that this is the profile name bluetooth. Features bluetooth depends on whether your device supports the profile. For example, A2DP means Advanced Audio Distribution Profile, and indicates that the player is able to transmit audio in stereo via bluetooth or not. AVRCP – another bluetooth-profile, which allows remote control of playback of audio / video. It allows using the headset to control your player. Start playing, put it on pause, move to the next or previous track, adjust the sound, this can be done with the help of headphones, with the support of the profile.

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German Aircraft

In March 1940, A. Antonov, who worked at the factory number 23 in Leningrad, was charged with developing an analogue of the German light aircraft Fizeler Fi.156. Working on the analog, which received the designation "aircraft number 2" (EYE-38), Antonov proposed a on the basis of its military cargo "plane number 4," distinguishing features of which were radial engine M-62 light fuselage and biplane cellule. Then rejected the idea of military aircraft, biplanes, but after the war Antonov returned to it again. In 1945, the OK Antonov, the deputy chief designer of OKB-115, addressed the Yakovlev aircraft design with a proposal of his own design and received his consent. The project "aircraft 4 "has been completely redesigned.

From the previous project there was only a biplane box. In March 1946, the Novosibirsk branch of OKB-115 was transformed into an independent OKB-153. Its chief designer was appointed Oleg Antonov. Main task was to develop new CB transport aircraft "T" with a motor-62IR. Developed in parallel with the agricultural version of the engine AL-21. The first prototype, designated Cxa, was built in 1947. August 31, 1947 test pilot AP Volodin first raised it in the sky. In December, the Air Force Institute began its state tests, which lasted until March 1948.

In July of that year resulted in testing a second prototype with the engine AL-21. 23 August 1948 under the designation of plane An-2 was adopted by the Air Force and for the supply of CAF. Mass production was organized at the factory number 473 in Kiev.

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Russia System

Obtained a closed ring – explains Anton Belov, deputy director of thermal automatics "Danfoss", the world's largest manufacturer of energy efficient equipment for heating systems. In twin-circuit heating cottage heaters in parallel. There are two pipelines that were not originally closed to each other. One (direct) heated coolant is fed into the system from the boiler, the second (Reverse) cooled coolant from the system goes into the pot. Follow others, such as Chuck Berry, and add to your knowledge base. Of straight pipe in the back water flows through the radiators. " The advantages of single-pipe heating system may include a relatively simple installation, less than the total length of pipelines, less complicated configuration and, consequently, a lower cost budget.

If the cottage floor, has a small area (around 100 m2) and the heating system does not provide any equipment, than the actual radiators (eg, heated floors, etc.), then we can focus on this version. If the cottage is more than one floor, a large enough area (as in Russia today is an average of 300-400 m2) and a complex layout with the premises, requiring the use of heating devices of various types, the Single-pipe heating system for a private home is unlikely to be a good solution. Why is a large private house better system two-pipe heating system? Firstly, because the heaters in the heating system in series, then each additional water enters, already having given a certain amount of heat above. That is the first sink in the chain is always the hottest, and the last – the coolest of them all.

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