Using components from the era, this 90's EDN circuit is used in analog to digital conversion circuits. Components are not currently common.
We found this circuit in the October 1996 Electronics Now magazine. The circuit uses LDRs as...
This audio oscillator is from a 1957 Raytheon publication. The tone generated depends on C2 and C2...
This circuit was found in an Electronics Now from the 90's. See the previous article for the...