This Intersil circuit was found in a 1980s documentation. Operational are of the time, but current equivalents can be experienced. The graph with the circuit performance is given next to the diagram.
This sound effect for guitars uses a 555 to modulate the signal from an instgrument pick-up. The...
This filter for scratch and rumble noises that occur on turntables was found in the February 1995...
This 1970 Electronic Design circuit uses a varactor or varicap. The circuit divides the frequency...