Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1996-02-28
1998-11-17
Pascal, Robert J.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
315276, 315219, 315224, 315307, H05B 3702
Patent
active
058381139
ABSTRACT:
A power supply circuit for driving a capacitive load includes a driving pulse generation circuit that generates a driving pulse of a specified frequency, a single drive circuit that is controlled by this driving pulse, and an autotransformer, where a center tap is connected to a source voltage, and forms a resonant circuit by using an autotransformer and a capacitive load, which is connected thereto. Alternatively, instead of driving pulse generation circuit, it includes a differential amplifier and a positive feedback path that performs positive feedback from one of the terminals of the autotransformer to the input terminal of the differential amplifier. In this manner, by driving the autotransformer using the single drive circuit, the entire autotransformer can be utilized in an efficient manner and a smaller and cheaper power supply circuit can be realized.
REFERENCES:
patent: 2683241 (1954-07-01), Passmore
patent: 3749977 (1973-07-01), Sliker
patent: 4319164 (1982-03-01), Tulleners
patent: 4633141 (1986-12-01), Weber
patent: 5493183 (1996-02-01), Kimball
Carlson David V.
Iannucci Robert
Pascal Robert J.
SGS-Thomson Microelectronics K.K.
Shingleton Michael
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