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
WASHING MACHINE BUCKET…
When my second child was born, before us again there is a problem washing diapers, raspashonok and sliders. To wash hands? Long and tedious. Wash in a big washing machine? It is not...
EXPANDER “DONUT”
Known expander for training the hands, made in the form of a ring. The proposed option differs in that it consists of several inserted one into the other rings. External 1 has on the...
