Buffer for AD converters (CB9318E)

This circuit was obtained from Linear Technology documentation from the 90's. The circuit uses company components.

Automatic garage light (CB7503E)
We found this circuit in a 1960 Sylvania transistor manual. The relay can be 12 V and C1...
MAX1753 Overvoltage and Overcurrent Protection
March 2017 - Mouser Electronics announces the availability of MAX17523, an overcurrent and...
Continuity test (CB8214E)
Found in 90s Popular Electronics, this circuit uses common general-purpose transistors in a...