Cathode ray tube display with cancellation of electric field emi

Details Cathode ray tube display with cancellation of electric field emi Cathode ray tube display with cancellation of electric field emi

1994-06-10

1998-03-10

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315 8, H01Q 100

Patent

active

057265380

ABSTRACT:
A cathode ray tube display having reduced electric field emissions comprising a cathode ray tube 100, an element 200 for detecting modulations in the final anode voltage of the CRT, the signal not being directly dependent on the deflection driving means 115. A matching network 205 provides phase and gain correction to the signal from element 200, amplification means 210 receives the signal from network 205 and an emission means 215 radiates a cancelling electric field dependent on the modulations detected by said element 200.

REFERENCES:
patent: 5151635 (1992-09-01), Cappels
patent: 5243262 (1993-09-01), Moen
patent: 5396151 (1995-03-01), Cappels, Sr.

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