Differentiator (CB7972E)

This configuration appears elsewhere on this site. This is from a 90’s Popular Electronics and is valid for other operational amplifiers.

Extended range power control (CB7935E)
This circuit was found in a General Electric documentation from 1965. The circuit is full wave for...
Fast adder 2 (CB7056E)
This is another quick adder that we found in an Electronic Design from the 80s. It also applies to...
Crossing Signal For Railroad Modeling 2 (CB3855E)
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...