IN THE EVENT OF CIRCUIT

ON CIRCUITAs you know, galvanic elements, batteries, accumulators and many generators do not have high-efficient, fast trigger protection against short circuits (a short circuit). No its in most sources of the secondary power supply Fuse the fuse, there is not in the bill. First, because the response time, is often absolutely not suitable for modern equipment, instantly reacting to abnormal situations. Second, fuses are one-time protection devices, requiring replacement by a new after his burnout, not everywhere and not always acceptable.

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A MAGNET WORKS

A MAGNET WORKSOne of the first devices in which the magnet was to serve man, was a compass. And now it is difficult just to enumerate the devices, apparatuses, machines that use magnet — natural, produced from different alloys. Widely used electromagnets and a variety of equipment based on them.

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RAIN, RAIN!

RAIN RAIN!Without summer there is no rain. Sometimes it seems that they are the end-edge is not… So let’s try to figure out how much rain falls every day throughout the summer camp. We will do a very simple device called a rain gauge. Here it is shown in the figure.

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THE AUGER AGAINST THE SNOW

AUGER AGAINST THE SNOWThe inhabitants of the city of Valdai in the Novgorod region, V. Berezhnoy country the site is located near the city limits, on the Western shore of the lake Highly the bottom. From the house — half an hour walking speed. Therefore, Victor D. tries all year round spend free time on the site, clean air.

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CLOTHES FOR HOME…

CLOTHES AT HOME...Periodically to the owner of the house or apartment, the question arises about “cosmetic” repair their homes. Many are sent to the shops for Wallpaper, paints, various finishing materials, since they are now such a huge number and variety that they can satisfy the most discriminating tastes.

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IMPROVISATION ON THE THEME OF MILITARY VEHICLE

IMPROVISATION ON THE THEME OF THE MILITARY CARIMPROVISATION ON THE THEME OF THE MILITARY CARLong ago, in the mid-1980s, when the Moscow plant “Salyut” there was a club of sports-technical creativity. It was in the club three vintage car: ZIS-5, GAZ-MM (“lorry”), the GAZ-67B. With the beginning of perestroika and the General collapse of the country club was closed, the premises and the garage was given to other needs, and the vehicles concerned members of the club parked where it is possible, just not rotted under the open sky in the backyard… Well, the GAZ-67 came to the cottage of our family. Since the machine was without documents and numbers, to legally use it. And she stood there for ten years, until the “good people” didn’t catch her exploded and the metal. I was young then, to the world of technology just joined and did not understand the historical value of this machine.

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THE BATTERY IN THE CASSETTE

THE BATTERY IN THE DRAWERIn many electrical devices the old issues (for example, ampervoltmetry Ts20, Ц4315, etc.) as an internal power source used battery KBS (L,X), sedss,7-4,1 In, unfortunately, which are currently very difficult as the industry is almost not released. This situation makes the owners of such devices to switch to other batteries, even of different denomination — to have the necessary EMF through a variety of their compounds, as they say, a trick.

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