A transformer coil is a set of insulated copper or aluminum wire turns wrapped around a magnetic core. It transfers electrical power between circuits using electromagnetic induction, changing voltage levels up or down without any direct physical electrical connection between the input and output circuits.
Key Characteristics
Operation: Works on alternating current (AC) via mutual induction; direct current (DC) creates no continuous changing flux.
Turns Ratio: The ratio of wire loops in the primary versus the secondary coil determines the final output voltage ratio.
Construction: Made of conductive metal wire separated by tight layers of insulation to prevent short circuits and energy loss.
