This sophisticated function generator circuit appeared in the September 1972 issue of Radio Electronics magazine. The circuit includes mains power supply.
This circuit using only transistors was obtained from Ferranti's 1969 documentation. It can be...
This sensitive circuit can be designed with FETs such as BF245 and MPF102. The sensor is a silicon...
Found in Popular Electronics from the 90s, this circuit generates two tones that are selected by a...