Otherwise, I think, and not be called a “spectrum” of Ryazan Hobbies of our reader Valery Helstein: model aircraft, radio, cynolebias, speed boat (master of sports, the third place on superiority of RSFSR), picture… Designed a copying machine for Amateur films, a motor for cord advanced “telephoto” to the camera “Krasnogorsk”, automatic slide projector. And here is another fascination — a homemade car of original construction. Curious, what is next?
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Long ago, in the mid-1980s, when the Moscow plant "Salyut" there was a club of sports-technical creativity. It was in the club three vintage car: ZIS-5, GAZ-MM ("lorry"), the GAZ-67B....
Electronic metronome
"beats" the beats not only sound, but light pulses. In his scheme includes two transistor of different conductivity. The excitation amplifier is implemented by using positive feedback...
