This interesting circuit, from a digital documentation two years 1978 shows how to implement a circuit that measures the position or angle of a stepper motor controlled by a microcontroller.
The circuit shown below is from the National Semiconductor's 1994 Linear Applications Handbook. The...
This circuit was suggested by documentation from a 1980’s General Electric. The triacs determine...
This article is from an old publication from 1978. The transistor can be a BC548 and the power...