This circuit can be used to generate percussion sounds such as bell, triangle, etc. The circuit must be powered by symmetrical source and the triggering is by external pulse.
Found with variations on this site, this circuit was taken from an American documentation from the...
The circuit shown is from the National Semiconductor FET manual. Both operational and FETs admit...
This circuit was obtained in a Portuguese publication in 1979 but can be easily assembled today by the...