Biya Motto Frédéric K, Tchuidjan Roger, Ndzana Benoit,
In the paper, we study the design basics of subordinate control system of direct current electric drive by the voltage change in armature with direct current in excitation winding. For the electrical transducer, we can use an electromechanical amplifier, a magnetic amplifier with rectifier that permit the regulation of output voltage through action on input signal.