Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1991-04-10
1993-01-12
Issing, Gregory C.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
315387, H01J 2970, G09G 104
Patent
active
051793318
ABSTRACT:
A flyback transformer operable over a broad frequency range is used as a regulated high voltage power supply. A ringless, layer-wound transformer is operated far below its natural resonant frequency in response to a pulse width modulator which may be synchronized with a video display in order to prevent beat frequency images in a video display. Diodes are coupled between the layers of windings to reduce the leakage inductance and stray capacitance. The supply is particularly suitable for TV or monitor use but not exclusively, so any apparatus requiring a regulated high voltage supply may use the invention.
REFERENCES:
patent: 4527229 (1985-07-01), Imamura et al.
patent: 4531181 (1985-07-01), Herz et al.
patent: 4808906 (1989-02-01), Liepe
patent: 4890210 (1989-12-01), Myers
patent: 5012401 (1991-04-01), Barlage
Bernat Louis
Computron Display Systems Division of Xcel Corporation
Issing Gregory C.
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