Ndodo yoyera ya tungsten / tungsten bar nthawi zambiri amagwiritsidwa ntchito popanga ma etting cathode, lever yotentha kwambiri, chothandizira, lead, singano yosindikiza ndi mitundu yonse ya maelekitirodi ndi chowotcha chamoto cha quartz.
Pure tungsten mbale yoyera yomwe imagwiritsidwa ntchito popanga gwero lamagetsi amagetsi ndi magawo a vacuum yamagetsi, mabwato, ma heatshield ndi matupi otentha mung'anjo yotentha kwambiri.