In the last issue we talked about last representatives of cruisers with over 20 years of ex-one of the most important and revered ships in the fleets of all the major Maritime powers. The class that developed it seems to be quite natural and successful, but which is completely and permanently disappeared from the plans of shipbuilders in just two to three years.
10 years — 15 ago, the industry was widely released table lamps with fluorescent lamps, designed for a voltage of 127 V. A today 127 V network was preserved only in rare homes. It is clear that the owners of these lamps was now “tied” to expensive and bulky step-down transformers. We offer our readers we developed and tested a device that allows you to include a 127-volt lamp in the network a voltage of 220 V without the step-down transformer.
Futurologists from the technique, predicting the future of ground mass transport, a clear preference is given to the development of electric vehicles. However, until now, despite the efforts of scientists of several countries have not yet created a cheap, economical and quite powerful electrochemical generators. Modern lead acid batteries after more than a century of development almost completely exhausted its possibilities.
The wires of electrical appliances, having a large length, it is easier to keep folded in a coil. And to lock them in this position, you can make a special clamp. For example, from strips of fabric, one end of which is sewn a button, and the other has under it a number of holes. Read more…
Sealed alkaline nucleotidase (NiCd) and Nickel-metallgidridnye (NiMH) batteries are finding increasing application not only in industrial devices but also in home appliances, replacing batteries size AA and AAA. But these batteries, like any other, eventually “emptied” and require charging. To recharge, as recommended by the instructions for use and marking of the batteries themselves, through them must pass through the current ICT = 0.1 mA from the numerical value of the nominal capacity C for 12 — 16 hours.
The design uses dynamic heads 0,25 GD or similar without any alterations. Ear cushions and pillows are made of a rubber sponge (you can buy in the pharmacy). For heads with a cone diameter of about 55 mm suitable sponge about the size of 155X60X35 mm. First take a piece of pressshpana or solid cardboard the size of 130X130 mm. In it cut a hole and glued it to the head (Fig. 1). Then, in the spongebob ear cushions cut out (or pluck) recess the speaker housing (Fig. 3), and the sponge-cushion (Fig. 2) make the hole oval. Its inner edge is cut from the side adjacent to the ear.
When decided to do the car (the material about it were published in the “Modeller-designer” № 5, 2007), then I faced a problem — where to work? Not under the same open sky in the courtyard. A temporary shed or even the shed again to be fully rescued in the cold season they also work practically impossible. But because the car manufacturer could drag on for years.
Folding wire extension can peretiraetsya on the bends. To avoid this, you should wrap several layers of insulating PVC tape, slide a section of PVC conduit or rubber hose of suitable diameter. Secured so the cable will last a very long time.
The Russian Federation is the only country possessing the technology of ekranoplane. In addition to the giant apparatus created under the direction of R. Alekseev, developed and are small, designed for local “airlines”. An example of this is a twin-engine 10-seater airplane EP-7 “Ivolga”, created under the leadership of Vladimir Kolganova EP-7 made according to the classic scheme of the aircraft with a composite wing. On the wing of small aspect ratio located displacement hull floats and propellers in annular channels.
For repair and colouring of roofs from metal, there is a need in the fixture to hold the tool on the roof slope. Help out a simple shelf with wooden bars with magnets on the bottom of the frame. If necessary, the venue under the tool can have a shoulder on the fence. Needles Read more…
