Regulator for Alternate-Current Motors

Abstract

Improvement in the electrical transmission systems; Means of regulating and power of the motor or motors; Used with system of multiple motors primarily (or systems with motors and transformers) that have independent energizing circuits which act to set up progressive or shifting magnetic poles (i.e. the rotating magnetic field); Controls the speed of the motor.

Patent #390820
Nikola Tesla
24.04.1888
09.10.1888