For years, the rubber motor due to its ease of use and low cost were the main engine modelers. But now, with the abundance of micro-motors boat and car with rubber motor find its ardent supporters, as evidenced, in particular, and editorial mail. Among your questions, dear readers, the most frequent two. So T zavgorodnego from Volgograd, E. Shcherbina from Semipalatinsk, A. Zhdanov of Moscow and other interested in how to calculate the number of turns of the rubber motor to maximize its energy, and what is its maximum energy efficiency.AND A HAIRBRUSH,AND RULER
To eliminate the need to carry a ruler or tape measure, apply a linear division on the comb, which is always in my pocket. N. TURULIN, Taganrog
To build and repair electronic equipment needs generators low and high frequencies. A simple device, a scheme which offers the British magazine “Radio Electronics Constructor”, replace them at first. The single junction transistor V1 performs the functions of the relaxer. The value of resistor R1 and capacitor C1 determine the value of the audio frequency (about 1 kHz). It change the selection of capacitor C1. Using an isolating capacitor C3 of the low-frequency signal is supplied to the output socket. And since it has a sawtooth form, that contains a large number of higher harmonics.
It is hard to imagine the competition without rocketmodeler launches RC models. It is, along with the competitions models-copies, quite an interesting spectacle, including from a sporting point of view. Of course, impressive for the beauty of the start of the model rocket—glider with a rocket motor and control its flight using radio signals.
Closed furniture-type drawers or column with shelves needed for everyday storage of linen and easy home clothes. But after suburban papers you have heated your bath or sauna and made a whole bunch of traditional in such cases, towels, sheets, robes — where to place them in the dressing room?
The first years after the conclusion of the London naval agreement of 1930, it caused a massive shift to the construction of light cruisers with 6-inch guns, were relatively quiet. The development of a new (or rather, a revival of the old) class was quite consistent and logical. Would the good old times when making each new project was justified primarily real needs of the fleet, but not artificial limits on the tonnage and caliber of the guns.
If you have a “no” trimmer, it will not break the neighbor… So, to paraphrase a famous song, you can start the story about the problems with manual lawn electromobility. Most of the models imported electrochimprom (from the English word trim — cutting, trimming) is clearly not designed for the Russian kolodong mowing lawns or weeds around fences.