This circuit uses a CMOS integrated circuit as a basic element and can be combined with the previous circuits. The circuit is from a Radio Electronics from May 1990.
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...