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
LUCKY THE DRAGONFLY
The first USSR championship flying micro models. It was held in 1990 at the Palace of sports "Dynamo" (room category III, altitude up to 30 m), but due to the lack of advertising and...
JUICE …FROM THE WASHING MACHINE
Overripe, "non-standard" fruits of the ground... a zealous owner and they go in the case: recycled natural fruit juices. It turns out a valuable product shelf, which in vitamins,...
