This distorter for musical instruments was found in a 80’s Hands On Electronics. The transistor can be any general purpose and the components can be changed to modify the effects.
This circuit is from a 1980s Motorola documentation. The circuit can be made with modern...
This well-known circuit triggers a relay when light striking the phototransistor is cut off. The...
This circuit generates a pulsed tone whose frequency depends on C2 and whose flashing depends on...