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 one-digit counter is part f the samples bench of the MultiSIM in one of its versions. The...
This circuit generates two signals in phase opposition. The frequency is determined by R1 and C1...
This circuit is in the very datasheet of Texas Instruments that manufactures the component...