This astable multivibrator has an active cycle of 30,000: 1. We found it in a 1970 EEE. The components used are from that time.
This circuit for the 3.5 MHz band (80 meters) was found in an old radio amateur documentation. The circuit...
This JFET amplification stage was found in the April 1993 issue of Electronics Now. The input...
We found this circuit in a Popular Electronics of the 80s. The circuit can be made with almost any...