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
WOULD THE BOARD…
Imagine the scene: actively worked under the scorching sapnam on their own acres, collecting potato interventionist or weeding the strawberries, you open the door and... Nice Prahlada...
THE LAMP WILL HELP BRIDGE
We often hear criticisms about premature burnout of the bulbs. And although they are mostly fair, I'm a pessimist to join not going. Because the solution of this technical problem can be...