This timer for long time intervals is from the 1990 Motorola Linear Databook. The setting applies to other operational ones and component values are given below the diagram.
This circuit is from a Motorola integrated circuit manual. The integrated used is no longer common...
Found in a 1968 US publication, this circuit is designed to measure very weak signals. The...
This circuit was found in the Intersil Databook. The integrated circuit used is uncommon today. R2 sets...