This electronic roulette circuit with 10 numbers was found in a Popular Electronics from the 80s. The circuit uses indicator LEDs and the transistors are general purpose.
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...