Fast adder 1 (CB7055E)

We found this circuit in an Electronic Engineering from the 90s. It applies to any logical family.

Current limiter (CB8355E)
This circuit was found in a 1965 Electronic Design. Transistor Q2 must be load dependent. The circuit...
Multiplexed AD Converter (CB9023E)
This 8-channel converter was found in a 1970s American documentation. The integrated circuits used are...
20 to 20 kHz generator (CB9240E)
This rectangular signal generator was found in an Electronics World of 1966. The transistors are...