Electric lamp and discharge devices: systems – Cathode ray tube circuits – Cathode-ray deflections circuits
Patent
1980-02-08
1982-03-02
Hubler, Malcolm F.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Cathode-ray deflections circuits
315371, 315400, H01J 2970
Patent
active
043180353
ABSTRACT:
In a color television receiver, field rate sawtooth current waves are supplied to vertical deflection windings by a vertical deflection output amplifier. The series combination of a deflection current sampling resistor and a DC blocking capacitor, coupled between the low potential terminal of the vertical deflection windings and a point of reference potential, is traversed by the field rate sawtooth current waves. The voltage across the series combination, comprising the sum of a field rate sawtooth voltage component and a field rate parabolic voltage component, is used as the drive voltage for the input winding of a saturable reactor effecting side pincushion distortion correction. The deflection current representative voltage developed by the sampling resistor is also utilized for a linearizing feedback purpose. The capacitor also serves a filtering function for the energizing potential supplied to the output amplifier.
REFERENCES:
patent: 3329862 (1967-07-01), Lemke
patent: 3408535 (1968-10-01), Lemke
patent: 3946274 (1976-03-01), Dietz
patent: 3968402 (1976-07-01), Sahara et al.
patent: 3982156 (1976-09-01), Monroe
patent: 4093895 (1978-06-01), Collette
patent: 4118656 (1978-10-01), Dietz
Main Chassis Schematic Diagram for GE EC-A Color Television Receiver, vol. N, (EC)4-9, 10/79.
pp. 23, 24, 25 of RCA Television Service Data Pamphlet No. 1979 C-5, Entitled "Chassis CTC 96 Series".
Hubler Malcolm F.
Meagher William H.
Rasmussen Paul J.
RCA Corporation
Whitacre Eugene M.
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