Found in the August 1994 issue of Electronics Now, this CMOS circuit uses the 4046, which is uncommon today.
This circuit is suitable for incandescent lamps but can be adapted to work with LEDs. The circuit is...
We find this circuit in the 80's own component manual itself. The characteristics of the circuit...
This source, obtained in the 1982 SGS manual, has pre-regulation and provides a current according to...