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  A transformer is a device that changes the voltage and current in an electrical circuit. The primary and secondary windings are linked with alternating flux in a core with low reluctance. This alternating flux creates the load current, which is caused by the EMF in the secondary winding. A transformer is also known as an alternating current machine. It is a great alternative for switching large amounts of electrical current at a time. current transformer A current transformer is a device that measures the amount of electrical current flowing in a device. It has two windings - the primary winding carries the actual current to the load and the secondary winding carries a proportional current to the measured amount. The primary winding is connected to the main circuit, while the secondary winding is connected to instruments or meters. All current transformers have different parameters, which determine their effectiveness. The primary winding of a current transformer is made of sing...