(The end. The beginning in № 4, 1976) the design quality of stereoleto, the description of which we offer readers, the outer shell of the ear cups made of artificial leather of black color. They are made on a wooden model-the matrix (Fig. 1). The hole is carefully cut out with a jigsaw, and the cut portion is used as a punch. Faux leather cut out a rectangle the size 180X160 mm, remove the knitted lining and evenly stretch the skin on the model, fixing the lower side of the stationery buttons. Then the product is heated to 70— 90°, push in and a punch in the matrix, stand in this condition until cool. Then punch with the buttons removed and the shell removed. On retinectomy frame (Fig. 2, POS. 2) glue 88H glued the foam and cut it in the shape of the ear pads. Thereafter, the sheath is stretched over the foam and glued to the bottom of the frame with glue BF-2, first external perimeter and then the inside. Decorative grille — from pocket radios. Glue it to the frame last.
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When employees of Institute of petrochemical and gas industry named. Gubkin turned in a circle electronic automation of the Moscow Palace of pioneers with a request to produce thermostats for chemical experiments, it is to no one’s surprise. Is not the first creative activities of the children’s team, led by F. Y. Yerokhin, goes jobs scientific institutions and industrial enterprises of Moscow. So this time they decided posed a technical challenge.
To consider, compare, think, manage that work, which are handled by modern computers. With the help of electronic machines is calculated the orbit of the motion of planets, satellites and missiles, the calculated flight speed of elementary particles in nuclear reactors, control machines, production lines, shops and factories. The management of real objects with a computer basically boils down to converting discrete data into a continuous signal. This work is done by auto binary code converters — descramblers. The layout of one of these converters built in school No. 511 of Leningrad. Schematic diagram of the layout in the figure.
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More precisely, one (50 or 65 watts), operating in three modes. Design advantages: constant availability, visual inspection of the three modes, etc. All provide automation. Power consumption in the idle — 15 watts (on L2), in the normal operating — 45 W (L2 and L3), and overheating — 50 W (L3). Changing modes 2 and 3 is made by the switch B1, in standby mode, by overlapping the luminous flux from L1 to K3 with the handle of the soldering iron.
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(Continued. Beginning at No. 1,2,3,4′ 2005)
More lovers of mushrooms and berries prefer to reach remote treasured areas rich in forest, on their “steel horses”. Leaving the car somewhere under the lush foliage. any tree, fond of “quiet hunt” so much that sometimes lose orientation “in time and space.” And the result is the joy of communication with nature — a tedious search of the vehicle, left unattended.
In high quality stereorelease made on the basis of heads 0,25 GD-10-290 from small radios. Their advantages are a wide frequency range, small harmonic distortion comfortable ear cushions earpads, good isolation from extraneous noise and beautiful appearance.
Many years used the intercom system with loud-speaking simplex communication, consisting of a main panel and linear unit connected between a two-wire line. The radio was mounted low frequency amplifier. Here was the power source.