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 physical line servo control uses components that are not currently common. The circuit is from...
This circuit is from old American documentation, but the transistor used is still very common...
August 2017 - This Maxim component, available from Mouser Electronics, is ideal for wearables,...