This interesting circuit converts BCD signals into a voltage that can be used in an analog application. The circuit was found in the July 1991 issue of Radio Electronics magazine.
Found in RCA documentation two years 70, this circuit triggers an incandescent lamp at dusk. The...
Found in Popular Electronics from the 90s, this circuit is based on a PLL567 and employs high-end or...
This circuit was obtained in an English publication of 1977. The operational is of the type with...