Found in July 1975, Radio Electronics magazine this circuit can use any operating circuit, including the 741. The circuit must use a symmetrical power source.
This circuit was found in the July 1990 Radio Electronics magazine. It is based on the 3-digit...
This circuit can be used on sound mixers to obtain effects. We found the circuit in a 1997...
This oscillator uses a ceramic resonator to determine the frequency. This kind of element is found...