CRT Spot suppression circuit

Details CRT Spot suppression circuit CRT Spot suppression circuit

1979-09-24

1982-07-20

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

315 3, 328 10, H04N 568, H01J 2996, H02H 720

Patent

active

043409105

ABSTRACT:
In a CRT system having a cathode coupled to a source of first potential voltage and a control grid biased negatively with respect to the cathode, means coupled between a source of second potential voltage and control grid for superimposing negative-going transitions in the second potential voltage upon the control grid so as to suppress the appearance of spots upon the face of the CRT subsequent to the de-energization of that system.

REFERENCES:
patent: 4056758 (1977-11-01), Schaas

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