
		Transformer is device that denaturalizes voltage combining SILICON STEEL and MAGNET WIRE, and changing voltage and strength of alternating current by using law of electromagnetic induction. It is consist of 2 or more coils which use same magnetic circuit, when supply alternating current to the one of coil(input), it produce alternating electromotive force to get wanted voltage(depends on 2nd coil turns) at the other coil(output).