This circuit produces the sound of percussion such as blocks, drum, bell, etc. The frequency depends on the marked capacitors, which can have a wide range of values depending on the desired sound.
This circuit was obtained from a 1966 General Electric manual. The circuit applies only to...
Author: Newton C. Braga Published:July 8, 2016 Formato:Book and e-Book Pages:...
We found this portable transmitter that reaches up to 200 meters in a Japanese publication from...