…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 BENCH IN THE DRESSING ROOM
Rotted benches in the dressing room... they were Made according to the ancient traditions of larch boards, comfortable, firmly put together and seemingly eternal. But the legs on the...
WILL PROTECT THE NAILS
Varnish or paint the chair — this seemingly simple task often ends stained priest, FDI it is necessary to proceed in stages. Four small cloves, hammered the bottom of the legs, eliminate...
