Electric lamp and discharge devices: systems – Polyphase a.c. supply – Transformer in the supply circuit
Patent
1986-11-26
1988-04-26
Moore, David K.
Electric lamp and discharge devices: systems
Polyphase a.c. supply
Transformer in the supply circuit
315144, 315276, 315227R, 315DIG5, 336178, H05B 4116
Patent
active
047407310
ABSTRACT:
Apparatus for sequentially igniting and serially operating a pair of electric discharge lamps from a source of AC supply voltage. The apparatus includes a transformer with a primary winding and first and second secondary windings mounted on a magnetic core having a slot under the second secondary winding. The first secondary winding has a high leakage reactance and the windings are serially connected with the secondary windings wound in opposition to one another. First and second capacitors are connected in series with the first and second lamps, respectively, to prevent the flow of DC current therethrough. By a novel choice of the ratios of the capacitance values of the second capacitor to the first capacitor and of the slot dimensions, superior operating characteristics for the apparatus are achieved.
REFERENCES:
patent: 2558293 (1951-06-01), Feinberg
patent: 2682014 (1954-06-01), Feinberg
patent: 3069597 (1962-12-01), Feinberg
patent: 3077570 (1963-02-01), Popa
patent: 3111637 (1963-11-01), Ovletta
patent: 3198983 (1965-08-01), Feinberg
patent: 3582709 (1967-09-01), Furui
Advance Transformer Company
Franzblau Bernard
Moore David K.
Razavi Michael
Treacy David R.
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