This temperature compensated circuit was found in a Popular Electronics from the 90s. Integrated circuits and transistors are from that time.
We found this circuit in the August 1994 issue of Electronics Now. The 4046 is unusual today. The...
This circuit was found in a Popular Electronics of the 80's. The NE602 functions as a heterodyne...
We found this chopper circuit in a 1967 publication. The transistors are of the time, and current...