Control transformers are mainly suitable for circuits with AC 50Hz (or 60Hz), voltage 1000V and below, and can operate continuously for a long time under rated load. Usually used as a control lighting and indicator light power supply for electrical appliances in machine tools and mechanical equipment. The control transformer operates using the principle of electromagnetic induction. The transformer has two sets of coils. Primary and secondary coils. The secondary coil is located outside the primary coil. When the primary coil is energized with alternating current, the transformer core generates an alternating magnetic field, and the secondary coil generates an induced electromotive force. The turn ratio of the Satons transformer coil is equal to the voltage ratio
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