The frequency of this Pierce oscillator, found in 1969 documentation, depends on the crystal. The current in the drain is about 500 uA. Crystals from other frequencies can be used.
Found in Radio Electronics from the 80's, this circuit can also be controlled by a microcontroller acting...
In other circuits we have seen a circuit for this application whose calculations have been...
This oscillator produces a sawtooth and square signals in the low frequency range. Other...