Quote:
Originally Posted by Wizard256
On current CRTs, the horizontal windings are open winding on the inside and fits along the curve of bell, but the vertical windings made me puzzled is that ferrite ring is split in half horizontally, held together with spring clips, the winding is wound around the ferrite ring at top and bottom. This wouldn't make enough magnetic field for vertical deflection because of complete ferrite "split ring" yet that did work even there is no gaps. How?
Cheers, Wizard
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Let’s look at magnets 101. A magnetic field will travel along the axis of the windings. Failure to have the ferrite core in place would give you another horizontal deflection magnet. Since the upper and lower coils are wound in series they buck each other forcing the field to be emitted along the windings. I hope this helps. Doogie