| 释义 |
purity coil purity coil[′pyu̇r·əd·ē ‚kȯil] (electronics) A coil mounted on the neck of a color picture tube, used to produce the magnetic field needed for adjusting color purity; the direct current through the coil is adjusted to a value that makes the magnetic field orient the three individual electron beams so each strikes only its assigned color of phosphor dots. |