For feeding low-voltage soldering iron from a household outlet uses simple adapters, which are, as a rule, the quenching capacitance (capacitor for a specific value). However, the use of such a device for installation of equipment with microprocessors, field-effect transistors and other electronic components afraid of static electricity is undesirable. Too high risk of breakdown due to the direct connection of the heating element with electricity of high voltage. Need galvanic isolation. For example, in the form of a step-down transformer.
TOROIDAL UNIVERSAL
Regardless of large or small cans sprung a leak – plastic or metal – it can do a lot more to serve, but in an unexpected quality: the role of the spray device for irrigation of green lawns, flower beds or vegetable crops. This appeared to have cans undesirable hole large enough to add lots of small, turning it into a kind of shower head, and bring a water hose.
Any gardener knows that watering flower beds need warm water and therefore an indispensable attribute of the summer residents are steel drums. When they are new, wherever you went, and when they rust, they are destined to become scrap metal. But few people realize that there is another, more rational and essentially free way to create an almost “eternal” storage of warm water – the tires of heavy wheeled tractors, which are in abundance lying around in many places. Better – from “Kirovtsa”. For this you need to make a bed of fine gravel (about 5 mm). Then to close it with plastic wrap (for sealing the seam) and press down the top cover, pre-cutting the cord until its upper edge.
For students of the 70-ies – 80-ies there was a special annual period, which was called simply “potato.” All through September and sometimes early October, students performed in the suburbs, working in the fields and harvest the potatoes.
Dear editors, in your journal often publishes interesting technical solutions; offer you. Adhesive pen after consuming the content is not just packaging, and the original design for innovation. For example, it can be easily converted into a syringe-dispenser for viscous compounds: epoxide resin, petroleum jelly, grease, grease nitrokey and other materials.
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.
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.
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…
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.