Method and apparatus for reducing the strength of pulsating magnetic fields

In combination with a cathode ray tube device enclosed in a housing, an apparatus for reducing stray pulsating magnetic fields, comprising a system of electrically insulated conducting loop circuits disposed externally and in proximity with the housing of said cathode ray tube device, wherein said system of electrically insulated conducting loop circuits is a set of separate electrically insulated conducting loop subassemblies, each said subassembly containing said conducting loop circuits within an enclosing form, said subassemblies placed in different locations external to said cathode ray tube device to improve attenuation of stray magnetic fields from said cathode ray tube device.

A method of reducing stray pulsating magnetic fields generated by a cathode ray tube device enclosed in a housing, said method comprising the steps of:

• a) forming a system of electrically insulated conducting loop circuit subassemblies, each said electrically insulated conducting loop circuit subassembly comprising a minimum of one conducting loop within an enclosing housing;
• and
• b) placing said electrically insulated conducting loop circuit subassemblies in positions external and proximate to the housing of said cathode ray tube device so as to reduce stray pulsating magnetic fields generated by said cathode ray tube device without opening the housing of said cathode ray tube device.