Your dream has come true – and here you are on the sea. Dazzling sunshine, with the quiet rustle of pebbles rolled on the coastal waves, the salty sea breeze caress your hair. Mask, snorkel and fins – your eyes open a wonderful world of underwater Kingdom. You slowly float along the ridge of huge stones and notice the impressive size of the fish. What a shame that you have not taken a vacation speargun. That would be a mining…
Reliable power supply and grounding are paramount to the operation of appliances, computers, local area networks, peripheral devices, connect the various cables (e.g., computer, printer, TV-VCR, and in other cases). The use of protection devices, in particular, uninterruptible power supply (UPS) efficiently only in the presence of good grounding. The practical implementation of a reliable ground as relevant (from the point of view of protection, long-term use and safety) that is no less important than, say, the life and health of a person. Because these concepts are interrelated. How to securely ground the equipment — the theme of my article.
When conducting different kinds of work often have to use hand tool percussion: chisel, punch, jumper and others. To eliminate the negative impact response of the impact on a hard work surface, it seems appropriate to use anti-vibration device (Fig. 1, 2, 3) to which the thread mate replaceable shock elements. The figures shown docked replaceable chisel.
Many products have elements of quick fixing which uses a special manual nut or screws with knurled head. Losing such detail — it is simple, but to pick up then another of the same — much more difficult. It is easier to make such a fastener from the usual, standard: apply to the faces of Read more…
There are many ways to fix the firing pin of the hammer on the wooden handle so that it did not come off during strikes. Here’s another simple technique: in addition to the usual wedge in it and the striker drilled the hole for locking screw – easily and securely.
It is known that over time a regular door and other hinges start to creak, and lubricate them from the inside is not so simple: sometimes you have to remove them, which is not always possible. However, once you drill into the top level loop through hole to the axis, and lubrication is simplified, and Read more…
My story will consist of three parts.
1 part. Grounding system (General information, terms and definitions).
Part 2. Traditional methods of construction of grounding devices (description, calculation, installation).
Part 3. Modern methods of construction of grounding devices (description, calculation, installation).
As you know, strawberry – plant capricious. Strawberry beds require frequent weeding, trimming the mustache, and when the berries begin to ripen, experienced growers pour on the ground sawdust to protect delicate berries from contact with the ground. Muscovite M. Listratova for several years, planted seedlings in cut-off top of plastic bottles filled with fertilized earthen mixture and partially recessed in the ground. To care for plants is not an example easier, and full of berries from this patch it is possible to collect much more than usual.
As a longtime reader of Your magazine, a lot of interesting in this read. Finally, I decided to write myself: maybe useful to someone my experience of construction.
Its essence is as follows. As-needed in private households to build the shed, and quite a large size. It is clear that the basis of almost every built — the Foundation. And the problem was exactly with the removal of the corners of the Foundation and its entire top in one and the same “zero” level. This depends on the strength and durability, especially in brickwork.
In recent years, developers of electronic equipment for ham radio became available to the newest element base of leading foreign and domestic manufacturers, allowing you to create new versions of familiar domestic devices, significantly increasing their performance.
The LEDs are almost all primary colors with a high light output allow to create elegant compact design home night light without using incandescent lamps. The intensity of the luminous flux generated by the described device, it is sufficient that, at least, not straining your eyes to read newspaper text at a distance of two to three meters from the source.
