Abstract: An implantable device includes a sealed case forming an enclosure, a wireless power transfer coil within the enclosure, a battery within the enclosure, and electronics within the enclosure. The electronics may be configured to process power received through the wireless power transfer coil to charge the battery. At least one region of the sealed case may be configured to impede eddy currents.

Abstract: An electromagnetic component includes a winding and a plurality of distributed winding capacitances in series with the winding at respective locations along the winding.

Abstract: The purpose of the present invention is to disclose a cast-in-place composite shielding shell with ultra-high performance concrete (UHPC), comprising an UHPC layer, rigid dismantling-free formworks, a RC layer, and a back anti-crack panel; the rigid dismantling-free formworks are disposed between the UHPC layer and the RC layer, and the RC layer is disposed between the UHPC layer and the back anti-crack panel; the RC layer and the UHPC layer are connected and fixed to each other by means of connectors. Compared with the prior art, the UHPC layer has higher strength and toughness, and is not prone to breakage and splashing under high-speed impact, and the back anti-crack panel prevents the presence of scabs on the back, and can better maintain the overall stress performance of the impacted site, thereby reducing damage to a main structure caused by the impact of a projectile, thus achieving the purpose of the present invention.