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
SHOVEL ON THE DOOR HANDLE
Shovel — ancient as the world, the instruments of labor. The design of it worked for centuries, and new, it would seem, not to invent. However, enthusiasts no-no and suggest something:...
ON SAILING
Those who live near the water, the boat is as necessary as for other bike or car. Of course, experienced shipbuilders-fans are unlikely to descend to the boat, we want to bring to your...
