Electric lamp and discharge devices: systems – Cathode ray tube circuits – Power supply from deflection circuit source
Patent
1981-04-02
1982-08-17
Blum, Theodore M.
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Power supply from deflection circuit source
315400, 323310, H01J 2970
Patent
active
043451888
ABSTRACT:
A source of high frequency alternating input voltage is coupled to the primary winding of a high frequency low voltage ferroresonant transformer of a television receiver power supply. A capacitor is coupled across the secondary output winding of the ferroresonant transformer, and generates a circulating current that magnetically saturates the secondary core portion of the transformer to regulate the alternating polarity output voltage developed across the secondary output winding. A step-up high voltage transformer includes a primary winding and a high voltage secondary winding tightly coupled to the step-up transformer primary winding. The regulated alternating polarity output voltage developed by the low voltage ferroresonant transformer is coupled to the primary winding of the step-up high voltage transformer without prior DC rectification of the ferroresonant transformer output voltage. The applied, regulated ferroresonant transformer output voltage develops a regulated high voltage across the step-up transformer high voltage secondary winding. A high voltage rectifier arrangement develops an ultor voltage from the regulated high voltage.
REFERENCES:
patent: 3739255 (1973-06-01), Leppert
patent: 3798497 (1974-03-01), Manske
patent: 3868538 (1975-02-01), Blanchard
patent: 4240013 (1980-12-01), Wedam
Paper presented at 1977 Convention of Institute of Television Engineers of Japan entitled "Stabilized Power Supply Incorporating High-Frequency Ferro-Resonance Transformer", T. Kadota et al., dated 10-7-77.
Conn Calvin E.
Gries Robert J.
Miko Sandor
Blum Theodore M.
Laks J.
Rasmussen P. J.
RCA Corporation
Whitacre E. M.
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