This circuit shows how to add a 1st regulator to a source that already has a step for this purpose. The circuit was found in an American power supply documentation.
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...