We had found this circuit in a January 1961 Radio Electronics Magazine. Using it is possible to take measures from the gain of transistor with a common a multimeter.
We found this guitar effects circuit in a 1997 documentation. As the components used are still...
This circuit was suggested by Siliconix in a 1980s publication. The circuit uses components from the time...
This oscillator produces an audible signal on a piezoelectric transducer. The frequency is...