Voltage regulating transformer

Electricity: power supply or regulation systems – Remote sensing

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315DIG2, 336 96, H01F 1514, H05B 4104

Patent

active

040074161

ABSTRACT:
A voltage regulating transformer is disclosed which includes a magnetic core and a primary winding connectable to an alternating current source for inducing an alternating magnetic flux in the magnetic core. The secondary winding comprises a plurality of paired sectioned windings responsive to the magnetic flux in the magnetic core. Each pair of the plurality of paired sectioned windings has a first and a second foil with a dielectric interposed between the first and the second foils thus creating a plurality of capacitors. One pair of the plurality of paired sectioned windings has a different number of turns than the other of the plurality of paired sectioned windings creating a potential imbalance upon interconnection of the paired sectioned windings. The potential imbalance produces an oscillation within the secondary winding at a frequency which is an odd harmonic of the frequency of the alternating current source providing a reinforcement of the magnetic flux during a portion of each cycle producing a greater peak output voltage. The invention is suitable for use with high-intensity discharge lamp regulators or ballasts which require a substantially high starting voltage in order to ignite the lamp. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.

REFERENCES:
patent: 3579084 (1971-05-01), Moyer
patent: 3688232 (1972-08-01), Szatmari
patent: 3775720 (1973-11-01), Winn
patent: 3890540 (1975-06-01), Ott

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