Using a 4046 PLL this circuit generates rectangular signals in three wavebands that depend on the capacitors used. The circuit is from a Radio Electronics from December 1989.
This sound effect for guitars uses a 555 to modulate the signal from an instgrument pick-up. The...
Available at Mouser Electronics this component of Diodes Incorporated consists of a voltage...
Published in Popular Electronics with the curious name of Obnoxious Noisemaker, this 1968 circuit...