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
MOTOBLOCK NOTHING MORE
The story of all machines and mechanisms created by Amateur designer from the village of Zelenchukskaya, Karachayevo-Cherkess Republic, Vasily Alekseevich VERBELEN, one post could not...
YOU, FARMERS!
As evidenced by the mail, under the heading "Small mechanization" is very popular among people whose work directly or indirectly related to agricultural production. Of particular...
