Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1975-07-30
1977-01-04
Wilbur, Maynard R.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
H01J 2970, H01J 2976
Patent
active
040016412
ABSTRACT:
A horizontal deflection system with a transformer coupled driver including separate turn-on and turn-off drivers coupled to first and second input windings of the driver transformer is shown. The output winding of the driver transformer is loosely coupled to the first input winding to provide a sawtooth drive current to the horizontal output transistor sufficient to maintain the horizontal output transistor in saturation without wasting excessive power. The output winding is tightly coupled to the second input winding to provide a sharp turn-off pulse to the horizontal output transistor.
REFERENCES:
patent: 3129354 (1964-04-01), Hellstrom
patent: 3411032 (1968-11-01), Liu
patent: 3434003 (1969-03-01), Geller
Fischman Martin
L'Hommedieu Jesse H.
Blum T. M.
GTE Sylvania Incorporated
O'Malley Norman J.
Orner Robert T.
Walrath Robert E.
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