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 is the circuit of a “follow the line” type robot with inductive sensors published in Radio...
This AD converter uses common components and can be implemented based on modern operationals. The...
The circuit in the figure provides a precision output stabilized at 10 V and makes use of a...