UNA DISPOSICION DE CIRCUITO DE MANDO PARA EL FUNCIONAMIENTO EN TRACCION O EN FRENADO DE UN MOTOR DE CORRIENTE CONTINUA

摘要

A control circuit which permits a direct current motor to operate during traction or during braking in such a manner that energy can be either dissipated or recovered; and, in particular, the invention embodies gradual, continuous, and reversible shifting from one form of braking action to another.