This circuit was found in old documentation but uses components that are still common. The circuit can be used in logic from 5 to 12 V.
This power control with SCR was found in Radio Electronics from April 1966. The components are...
A frequency divider for digital signals can be constructed based on a single 4018 integrated...
The circuit shown is from Motorola's 1990 Linear Databook. Shaded components are optional. The...