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
TAIL TIERNEY
Offer simple, proven in dozens of models of the design of mechanisms to control the stabilizer and rudder for time or rezinomotornaya models. The basis of the first node is duralumin...
SO IT WILL BE SAFER
In the video monitor МС6105 it makes sense to replace the output transformer of lines TCDS-8 to a strong — TVs-90П4 with the use of voltage multiplier. Despite the absolute similarity of...
