There are numerous ways to make current, to the ball of yarn did not run away and not out somewhere. The easiest is to put it in a box, basket, or, as shown in the drawing, just the right size jar.
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After nearly a decade, resumed the holding of the all-Union sorevnovanii model airplanes-students. They will vystupat in teams of young men with models of three new classes: glider A-1,...
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Monophonic electronic musical instrument (see figure) is assembled on a single chip К176ЛА7 containing four two-valve "AND—NOT". On D1.1 is made the generator of frequency vibrato. The...
