This simple 6 V source stabilized by zener diode was found in a European technical publication from 1972, but it is current for its simplicity and the components it uses.
We found this CMOS circuit in a 1989 documentation. The accuracy will depend on the adjustment that is...
The purpose of this game obtained in a 1998 documentation is to guess the number that the circuit...
This filter was found in the October 1969 issue of Radio Electronics magazine. The frequency...