Component having two coils of wire, the primary and secondary, whose lengths (number of turns) are in a fixed ratio to permit voltages to be stepped up or down and circuit impedances to be matched for maximum power transfer.
"Doctor Coban, It was with a great deal of pleasure that I first played the CD's you transferred from a reel-to-reel tape recording that I had made of a radio broadcast over 46 years ago. The results were outstanding. The quality is excellent with no sign of hiss or other tape noise after your Sound Restoration. I admit to some anxiety in ..."