Employing the XR2206 IC, this circuit was found in the May 1977 issue of Radio Electronics magazine. The formula next to the diagram gives the component values as a function of frequency.
This circuit was obtained in a 90s American documentation. The integrated circuit used is uncommon...
This circuit was obtained in a 1980 English magazine, but it can be easily assembled today, since...
This configuration is used to display the characteristic curve of a diode in the virtual...