Pulse-triggered 7555 monostable (CB25128E)

We found this circuit in a Radio Electronics magazine from April 1988; The output timing is given by R1 and C1.

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...