Someone who knows Morse code or just going to study it, can build a simple device, shown in the figure. On a plywood Board install the battery B and the lamp L of the flashlight. Contactor In the manufacture of contact plate faulty relay. Now connect the parts to each other by wires. To increase the “range” of the Telegraph, put a lamp made from tin or heavy paper tube — a tube length of 20 cm.
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CHUCK — NO KEY
A nail and a screwdriver located as shown, will help you out, if in the bustle of work had disappeared the key from the Chuck of the drill and the drill bit must be urgently replaced.
“FIGURE” SAW
Electric jigsaws are of type AL-1, AL-2, produced by Cheboksary electric plant, the range of work performed is very limited. For example, due to the design features of the jig saw it is...
