current transformer custom transformers flyback transformer CURRENT TRANSFORMER Dyco Electronics can satisfy your custom current transformer needs. You ask for it, we can make it! Our expeirenced technical staff will help you find exactly what you are looking for because we eleive that a satisfied customer is worth two. Coupling is a measure of the amount of interconnecting flux lines between two windings of a magnetic component or two magnetic components. For a current transformer the designer maximizes coupling between the windings by placing the windings on the same core and through various winding techniques. For individual inductors a magnetic shield is often placed over the windings to prevent flux lines from radiating from the winding and interfering with other components.