Current to voltage converter (CB7332E)

This circuit is from a Popular Electronics from the 90s. The integrated circuit admits equivalents that must be tested.

Window Comparator I (CB24973E)
Using the CA3140 in the figure we have a comparator that goes low in the window voltage space. The...
Two-wire comparator (CB25192E)
With this circuit it is possible to connect a comparator to a power stage via two wires. The...
LED Flasher 4069 or 74C04 (CB24586E)
This simple circuit was found in the May 1979 issue of Radio Electronics magazine. The circuit has the...