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In this video I show you how to make a power controller for motors or lamps without transistors, do not miss this video. Magnetic amplifiers are devices that use electromagnetic fields to modify and control electric currents. These devices use the magnetic saturation property of an iron core to control the flow of electrical energy. It is important to note that the saturation of the core does not occur instantly, but is a process that takes place over a period of time, this allows the magnetic amplifier to be used to smooth the ignition of certain devices such as a motor. Subscribe it's free For Channel Fans More content on the Facebook page: / recalibrandovideos