We found this circuit in documentation from the 1980s. The component values are calculated using the formulas next to the diagram.
This circuit obtained in a 1989 documentation can be useful for photographers in determining...
The circuit shown is from an old European publication. In it we have the way to activate a relay...
Toshiba's TCH8H611FNG integrated circuit makes it possible to control stepper motors up to 0.8 A...