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
STARTER MOTOR
To run the motor manually? And fingers will discourage, and not always with a half-turn wind up cranky diesels. And the competition time limit to run very hard. Did not fit in the...
DESIGNED FOR OFF-ROAD
Four-wheel drive truck GAZ-63. The emergence in the early twentieth century a large number of vehicles and the subsequent rapid development of road transport has required the creation of...
