…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
VITAMINS GROW ON THE BALCONY
The BEDS of the PIPES...no matter How great the temptation to consider yourself as a pioneer, should nevertheless admit that the gardens and plantations on the balconies and loggias...
The HOLIDAYS
Another use of old tires in the suburban area recommends that the Bulgarian magazine "Put yourself" as "Parking" of bicycles near the house.
