In Amateur radio practice, there are situations when 9-volt DC source you need to obtain 12, and then a higher output voltage. Bail in such cases can I designed a compact transformerless adapter. Made on the basis of two or three common chips and four transistors, it will allow first to improve the initial voltage of approximately 17 V, and then to output the desired 12 V. And stable.
Recently there is a rapid displacement of the cassettes compact discs (CD). Among the reasons for this and the continuous increase of requirements to quality of sound reproduction and virtually unlimited service life “compacts”, and reducing the value gap between them and the tape carriers of audio information. So, in June 2001, the market price of one CD with modern recordings is consistent with a cost a half to two cassettes. However, equipment to play music CDs is still very expensive and not everyone can afford its purchase.
Under the heading “advice to the Modeler” magazine “modelist-Konstruktor” No. 11 ’01 published material on how to adapt the radios from cheap toy cars of Chinese production to the remote control equipment, which is lacking in the circles of children’s technical creativity. Penetrating the essence of the proposed technical solutions, I came to the conclusion that the chip KY011 encoder base of the transmitter with a more efficient application allows you to enter two more commands through the use of the 1st and 6th “back-up” pulses.
If you have to saw a certain number of wooden rods with a strictly perpendicular end faces, it is advisable to pre-make auxiliary guiding means conductor. It is necessary to take flexible sheet metal (e.g. sheet steel) and any way you cut it narrow slit. Enough now to wrap a sawn sheet rod and the Read more…
The proposed model missiles S3B allowed its Creator Tarasov from Chelyabinsk to become a winner of four Cup competitions S. P. Korolev. Moreover, it is universal: it can serve class Ѕ6В.
This car rolled off the Assembly line of the Gorky automobile plant, sixty-six years ago — in March 1936, succeeding produced there the first mass Soviet passenger car GAZ-A. the Basis of the new car was the Ford V8, which replaced the suspension (instead of the transverse springs Gorky made a lateral). The motor “m” used from the previous model, and after upgrading he developed a power of 50 HP, driving the car to 105 km/h.
So we said in the editorial, having received an article by our correspondent from Donetsk and came almost simultaneously with the letter of the head of the shipbuilding laboratory of the Donetsk syut Valentine Boikova. Hello, hydrocutting! We were looking forward to reader responses on the first article about hydrocort, publication of which began in this magazine in 1969.
The Soviet heavy — duty vehicles- trucks, tractors, the so-called “off-road”, or career, cars deserve a special discussion. They are a unique design, and it is not surprising that traditional parades of vehicles, carried out at ENEA, these machines often played the role of protagonists. Multi-ton MAZ and BelAZ rises majestically above the crowd of spectators. Interest in the machine called not only the dimensions, the enormous size of the wheels and lifting tens of tons.
This plane can rightly be called the most successful American fighter of the Second world war. Experts from the U.S. Navy estimated that 75 percent of all air victories of the naval aviation of the United States, accounted for F6F-3 HELLCAT. On battle account carrier — based fighter- 4947 shot down in aerial combat aircraft, and 209 downed F6F-3 land-based.
Conveyor under the open sky could rightly be called a complex of the most diverse and unusual cars, created in our country in recent years for laying pipelines in any geographical conditions. The novelties of this amazing technology are annually demonstrated at the Exhibition of achievements of national economy of the USSR. Here, in the pavilion “Gas industry”, a series of exhibitions dedicated to special design Bureau Gazstroymashina, where high-performance mechanisms for gas and oil routes.