An automatic starting device for asynchronous motors

Induction motors with self¿contained resistance ¿ Hand and automatic control¿Advantages of the latter¿Value of the resistance in function of the speed to maintain a constant-current input¿General equation of equilibrium for constant-current automatic starting¿Necessity of ah independent variable¿Variable ratio gear as given by a differential equation¿The graphical solution¿Condition of proper working¿Sensitiveness and the influence of dynamic friction¿The fluctuation of current in ordinary multi studs starter¿The best theoretical conditions¿ Time necessary for starting¿Energy loss at starting¿Comparison with the automatic starting¿Mechanical details.