Apparatus for transforming multiphase power of different phase t
Article of footwear incorporating a heel strap system
Cable operated tap changer for a three-phase transformer
Contact piece for air-cooled transformers having conductive line
Contact piece for establishing delta circuits on three-legged tr
Electrical devices having adjustable electrical characteristics
High powered inductors using a magnetic bias
Phase shifting transformer or autotransformer
Phase-shifting transformer with a six-phase core
Variable three-phase inductor
Wide ratio autotransformer-type current ranging