Insulated transformer - has insulation between windings formed on one of them, typically of heat-resistant plastic

摘要

Transformer has two windings separated by insulating material. The latter is formed by the insulation on the wire of one or both windings. The insulation can be formed by a plastic coating, typically fluoroethylene-propylene or polytetrafluoroethylene. It can be heat-resistant, and on the winding with the lesser number of turns. This winding can fit on the other winding, and the transformer can have an annular core. ADVANTAGE - Simplicity and low cost.