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 an Electronic World, this circuit is designed to control solenoids up to 5 A. The circuit...
This circuit has a configuration that is widely known and explored on our website. The SCR can be...
This zero crossing detector is of the 1993 Motorola Linear Interface ICs. The source is...