Or night duty (with reduced brightness) lighting, allowing at the same time significantly increase the lamp life, can be implemented in different ways. Among the simple and reliable method using a quenching capacitor in power supply circuit (Fig. 1). The capacitance C1 is calculated as reactance to obtain the desired lamp voltage ЕL1. Resistor R1 is necessary for capacitor discharge after disconnecting the circuitry from the network. Its value is in the range of 100-500 ohms.
LONGEVITY WILL BE THE LAMP
At home, when everything is at hand, everyday problems are solved easier, can not be said about camping life in the campaign – be it a tourist, a geologist, surveyor. Here often helps advance preparation or resourcefulness, the ingenuity, so necessary in a so-called field conditions.
The author and Creator of the Rover, about which speech will go, — Boris Ryzhov — a longtime friend of the readers of our magazine. Photographs of the manufactured machines (crawler and six-wheeled all-terrain vehicles) were published in the journal in 1990 (No. 7). But the desire to create and to make a more perfect vehicle all-terrain since it gets cold. Professional aircraft mechanic and restless Amateur designer, after retirement, continued to build all-terrain vehicles. Why? Yes, until (and, apparently, for a long time) to get to most places in the depths of Siberia, where he lives, Boris Nikolaevich, it is possible only on such machines.
Narrow Cabinet-column in the hallway or bedroom very convenient for placing small items, but it requires additional space to allocate that in a small room is difficult. However, as seen from the Hungarian magazine”, Earmaster” similar auxiliary Cabinet … hide inside the closet or wardrobe, of course, slightly modifying its design.
A scrap page torn from a magazine with a picture of a cute table to lay in the Park on a bench, I sat down to rest. Table, or rather his design, I was interested (in the old days I had to make furniture for myself and to order). Photography, like the table, was done professionally (presumably for ads) — it has completely solved the consumer advantages of the product: unassuming beauty, functionality, at the same time hiding its design features.
(Bomber-torpedo bomber Nakajima B5N). The first mention of the Japanese torpedo bombers appeared almost a hundred years ago – in April 1916, when at an aircraft factory Naval Arsenal in Yokosuka, was designed by the first aircraft of this type. In its development, took an active part Navy Lieutenant Chikuhei Nakajima, the future head of the eponymous Japanese company. However, the domestic aircraft do not generate interest from the Navy, which chose to seek the assistance of foreign experts.