The device to prevent theft in large and small retail outlets, according to many experts, are the most reliable among all types of protection systems applied in practice. Outwardly, they look like two open valves “gate” installed in parallel (photo 1). The device do have a greater probability of determining the anti-Krasnoy label (due to extremely high power pulses supplied to the antenna). However, the pulses of these devices have a negative impact on human health (with frequent and prolonged exposure), mainly due to their high power.
IN THE SOCKET — THAT!
On the switchboard garages, workshops and home labs often use the same sockets to connect consumers designed for high (220 V) and low (12V) voltage. The danger is the inclusion of 12-volt device in a 220-volt outlet. To avoid this, I propose to modify the 12-volt plug as the most “risky” of an erroneous connection Read more…
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.
My story will consist of three parts.
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.