How nice to fall asleep to the rhythmic roar of the rain, as the happy jingle of the spring thaw! But should we depend on the vagaries of nature, when all you can hear at any time at home. It is enough to make a simple electronic device, based on a well-known multivibrator. Changing the position of the slider of the variable resistor R2 (see diagram), adjust the rhythm of the speakers B1 and B2. The device is powered from a single battery 3336L. Selecting the values of resistors and capacitors, achieve a pleasant timbre of the device. VOSKRESENSKY, Kuibyshev
Recommend to read
Switch under a cover
When organizing outdoor lighting, the nearest power line support (pole) or other suitable wooden structures are often used to mount the light fixture. To save on wiring and for convenient...
BUILDING A CAR
When vehicle type is defined: scheduled its approximate dimensions, weight, number of seats in the back, the engine, comes perhaps the most important stage of design development of the...
