5 V reference LT1027 (CB14595E)

This circuit is from the 1993 Linear Technology Applications Databook. The component is uncommon today.

Unijunction Bistable (CB16912E)
This circuit, from ancient French documentation, produces a rectangular pulse from input pulses...
Room Heater Control (CB13938E)
This control is from the Motorola Circuit Applications for the Triac of 1971. The Triacs can be...
Missing Pulse Detector (CB6110E)
This circuit is from 1964 documentation but can be easily implemented based on current components....