Research on Bi2Sr2Ca2Cu3Ox (Bi-2223) superconducting tapes, particularly Ag-sheathed types, focuses on Powder-in-Tube (PIT) fabrication and critical current performance at 4.2 K and 77 K. Studies detail the characterization of compact coils and the analysis of joint resistance in cable-in-conduit-conductors. For further technical details, visit ScienceDirect .