Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1988-05-16
1989-05-09
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
358190, H01J 2970
Patent
active
048292168
ABSTRACT:
In a switching power supply for a television apparatus, a switching stage is coupled to a source of DC input voltage and to an energy storage inductance for developing a source of DC supply voltage. Operation of the switching stage generates a switched waveform voltage in the inductance. The primary winding of a flyback transformer is coupled to and energized by the DC supply voltage. A second winding of the flyback transformer is coupled to the inductance and provides a magnetic path, via the flyback transformer, for energy to circulate between the source of DC supply voltage and the energy storage inductance. An auxiliary winding is magnetically coupled to the inductance and to a load circuit, such as a high power audio stage, for transferring at least a portion of the circulating energy to the load circuit. Additionally, the flyback transformer may be used to directly transfer energy to the load circuit.
REFERENCES:
patent: 3629686 (1971-12-01), Hendrikus et al.
patent: 3689797 (1972-05-01), Hetterscheld et al.
patent: 3970780 (1976-07-01), Minoura
patent: 4163926 (1979-08-01), Willis
patent: 4190791 (1980-02-01), Hicks
Philips Technical Publication 130, C. H. J. Bergmans, entitled "Twin-Switch Power Pack for 110.degree. Colour TV", Electronic Components and Materials, vol. 6, No. 1, 1984, pp. 48-54.
An Article in Funkschau, vol. 8, 1973, entitled, "A Switch Power Pack of Great Efficiency", by Eduard Gublass.
Blum Theodore M.
Fried H. D.
Laks J. J.
RCA Licensing Corporation
Whitacre E. M.
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