This traditional crystal oscillator configuration can use any CMOS gate configured as an inverter. R1 has values from 1 to 5 M ohm and R values around 10 k.
This circuit was described in an article in Electronics Now magazine in December 1995. The circuit...
This circuit squares the waveform of a signal applied to its input. The circuit is from an old...
This circuit was obtained from a European magazine of the 1990s. The integrated circuit used is...