Device and method for utilization of heat due to losses in trans
Device for dissipating heat from ferrite cores of inductive comp
Device for inducing an electrical voltage
Device for the prestressing of concentric cylinders
Dielectric liquid impregnated with gases for use in transformers
Direct-cooled tape layer winding
Disk coil winding of interwound single or double coils
Distribution transformer with coiled magnetic circuit
Doughnut-type transformer for resistance butt welding
Dry type transformer having improved ducting
Dry-type transformer and method of manufacturing