Found in documentation from the 90s, this circuit was used in communications receivers of the time. MOSFET is a component of the time, uncommon today.
Found in a 1960 Sylvania manual, this circuit can be implemented with a modern equivalent...
This configuration, already presented in other points of this section and website, is of a...
We found this precise crystal oscillator for the 144 MHz band, depending on the crystal used. The...