The circuit is from 1980s Linear Technology documentation. The components are of the time and circuit behavior curve is given along the diagram.
We find this circuit in an American 1980s documentation. It triggers an alarm in the event of a...
This circuit is from an 80's documentation, making use of PUTs that are not currently common...
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...