…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
“TRAP”… FOR FISH
It is not intended for fishing and for retaining fish during cooking to cleaning her scales. Anyone had to do this knows how difficult it is to hold slippery fish. However, secure on the...
FOR ANY RADIUS
Comfortable and high-performance tool — the jigsaw is much easier and straight and curved sawing of wooden workpieces. Simple Supplement thereto, proposed by the Hungarian magazine...
