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 is from a National Semiconductor manual, appearing elsewhere on this site. The...
Mouser Electronics already has in stock the new RF transceivers Atmel / Microchip ATA8820 SIGFOX ™ for...
This circuit can be found in a 1970 Motorola documentation. The circuit can be implemented with general...