Electromagnetic field shielding circuit for a display

Electric lamp and discharge devices: systems – With electromagnetic wave radiation preventing or shielding...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

315 8, 315 1, 315370, 315371, H01J 152

Patent

active

057866686

ABSTRACT:
An electromagnetic field shielding circuit is disclosed. The circuit comprises a phrase inverting circuit, coupled to a turn in the secondary windings, for generating an inverted phase with respect to a phase of a voltage signal induced to the anode electrode from the secondary windings. An oscillation circuit oscillates a voltage signal output from an output node of the phase inverting circuit. The oscillating circuit matches an oscillating signal with a high voltage level signal. An electromagnetic field generation circuit applies a voltage signal output from an output mode of the oscillation circuit. This generates an electromagnetic field responsive to the voltage signal substantially around the circumferential periphery of the front portion of the picture tube. This electromagentic field cancels and shields the electromagnetic field generated from the anode.

REFERENCES:
patent: 4644102 (1987-02-01), Blesser et al.
patent: 4742270 (1988-05-01), Fernsler et al.
patent: 5198729 (1993-03-01), Powell
patent: 5260626 (1993-11-01), Takase et al.
patent: 5285132 (1994-02-01), Yang
patent: 5311099 (1994-05-01), Grocki
patent: 5404084 (1995-04-01), Onodera et al.
patent: 5449975 (1995-09-01), Madsen
patent: 5561133 (1996-10-01), Darius
patent: 5563476 (1996-10-01), Smith et al.
patent: 5574262 (1996-11-01), Petty

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electromagnetic field shielding circuit for a display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electromagnetic field shielding circuit for a display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electromagnetic field shielding circuit for a display will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-25555

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.