| 摘要 |
MAGNETIC SHUNT FOR DEFLECTION YOKES Apparatus for reducing net distributed magnetic radiation in front of and all about the outside of a cathode ray tube display device. In such cathode ray apparatus a deflection coil is provided having axially aligned and circumferentially aligned wire segments, relative to the central axis thereof, producing a distributed magnetic field in front of the screen as well as all about the outside of the device which is undesirable. The invention provides a magnetic shunt disposed between the deflection coil and the screen, the shunt comprising a substantially ring-shaped arrangement of magnetically permeable material and a pair of coupling wire loops about said ring electrically coupled in series with the deflection coil to induce a magnetic field in the ring to maximize cancellation of the net distributed magnetic field at a selected point in space in front of said screen as well as all about the display device, so as to provide optimized overall magnetic field reduction through the action of the shunt.
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