| 摘要 |
A static/purity device includes a stationary bipolar purity control with rotatable magnets and movable quadipolar and sextipolar controls with rotatablemagnets for positioning over an in-line arrangement of electron guns in a color television picture tube. The picture tube base defines a reference surface for the guns. The picture tube socket is mounted on a component-carrying printed circuit board which fits around the neck of the picture tube with the socket abutting the reference surface. A rigid plastic insulating cover protects the foil side of the board. The static/purity device includes a pair of legs cooperating with apertures in the cover for correctly positioning the magnets with respect to the gun elements when the socket is connected to the tube base. A clamp firmly affixes the entire assembly to the picture tube neck.
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