This debouncer circuit uses a transistor to produce a single pulse when the switch is triggered. The transistor conducts when the switch is opened. We found this configuration in an 80's publication.
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...