…The baby was cranky for a long time and finally fell asleep. A few minutes later the doorbell rings. And, of course, the baby wakes up, and now to calm his unlikely…
I propose a simple addition to the doorbell. Just say that it’s good for calls that are switched through the circuit of 220 V. Here we need a cartridge with a bulb and the switch. Everything is connected as shown in the figure. In normal mode when you press the button is actuated and a bell, and a lamp in the “quiet” — only lamp.
I. GALKIN, engineer
Recommend to read
THE FLAME GOES OUT
There was no hot water and I put it on the burner of the gas stove kettle, and a bowl and went to watch TV. The kettle boiled quickly splashed water over the edge and filled the burner....
“VENTILATOR” AT THE SAMOVAR
The samovar is again becoming popular, and in suburban areas preferred not electrical, and "wood", with exotic incitement with the old boot and the invariable pipe, providing the...
