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Programmable Very Low Frequency Magnetic Compensation for Displays

IP.com Disclosure Number: IPCOM000035672D
Original Publication Date: 1989-Jul-01
Included in the Prior Art Database: 2005-Jan-28

Publishing Venue

IBM

Related People

Authors:
Anstrup, F Dickerson, JA Moeller, SA Pillsbury, TB [+details]

Abstract

There is a growing concern that very low frequency (VLF) magnetic fields may have ill effects on human beings. A major source of the low frequency magnetic fields in display monitors comes from the high voltage deflection system. Generally, maximum intensity of this field exists on the side or in the rear of the monitor in close proximity to the physical location of the flyback transformer. In some cases, the deflection yoke is the largest contributor. Thus, front-of-screen radiation will be of greater concern.