This circuit uses a 100 kHz crystal, but nearby frequencies can be obtained with appropriate crystals. Components are still common today.
Panasonic is delivering through its Mouser Electronics its CSP series of power MOSFETs in a range...
This circuit was obtained from an American documentation from the 90's. The components can be...
This simple TTL electronic dice uses common anode displays. The circuit is from a March 1975 Radio...