DC Motors, Part V:  Model of a separately excited DC motor, 28/11/2013
Channel: Lutfi Al-Sharif
Date: 2013-11-29

This video is the fifth video on DC motor.  It develops the real model of a separately excited DC motor.  It considers the armature resistance, armature inductance and the back emf.  it uses Kirchoff's voltage law (KVL) to develop the general equation that links the supply voltage, the armature resistance, armature inductance and the back emf.  The back emf voltage is dependent on the magnetic flux and the rotational speed of the motor.