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.
Recommend to read
GUIDE MACHINE
In school museums or at exhibitions of young artists in the role of a tour guide may carry a tape recorder. Explanatory text in advance is recorded on a magnetic tape. It remains only to...
FORCING CSTOM-2,5 D
Good appearance good passport data, quality performance — these are produced in our country in large series compression motors CSTOM-2.5 D. But unfortunately, not every of them work...
