This 5.1 MHz circuit was found in a 1980s documentation. The frequency is given by the crystal and general purpose transistors can be used.
The transistors of this circuit may be general purpose and the power supply comes from the TTL...
January 2017 - Through Mouser Electronics Texas Instruments is launching its new zero-drift...
This four-phase stepper motor control uses a ST6982H IC. The maximum output current avaiable is...