Fast adder 1 (CB7055E)

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

VFO with FET (CB4053E)
This circuit for the 3.5 MHz band (80 meters) was found in an old radio amateur documentation. The circuit...
Self-biasing JFET circuit (CB25563E)
This JFET amplification stage was found in the April 1993 issue of Electronics Now. The input...
Voltage Monitor and Comparator (CB6086E)
We found this circuit in a Popular Electronics of the 80s. The circuit can be made with almost any...