Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1981-10-08
1984-01-31
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
315400, 358190, 358243, 323310, 323306, 363 75, H01J 2970
Patent
active
044292600
ABSTRACT:
A self-regulating power supply for a television receiver includes a transformer with a primary winding coupled to a source of input voltage for developing an alternating polarity supply voltage across a secondary winding. The supply voltage is stepped up, rectified and filtered to develop an ultor accelerating potential for the picture tube of the television receiver. A ferroresonant or self-regulating load circuit includes a saturable reactor having a winding coupled to the transformer secondary winding to provide regulation of the supply voltage, and thus, regulation of the ultor accelerating potential. The transformer secondary winding and the saturable reactor winding each comprises two winding sections, with each section having a terminal coupled to a common reference point, such as chassis ground. This type of arrangement provides redundancy in the ferroresonant operation of the self-regulating load circuit to avoid excessive increase in supply voltage should a portion of the self-regulating load circuit become disconnected from the transformer secondary winding.
REFERENCES:
patent: 4240013 (1980-12-01), Wedam
patent: 4353014 (1982-10-01), Willis
Blum Theodore M.
Laks Joseph
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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