This fuzz effect for guitars was found in an American 1980s documentation. The transistors may be the BC549 and should be battery powered for noise sensitivity. Diodes are commonly used.
This circuit changes an audio signal to get better reproduction. It is important when editing...
Found in an American documentation from 1992, this circuit for medium and short waves uses a CI of...
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...