Inductor devices – Coils of special configuration
Patent
1989-03-13
1992-03-03
Picard, Leo P.
Inductor devices
Coils of special configuration
336221, 336222, 363 24, 323361, 323355, H01F 2728, H02M 3335
Patent
active
050936468
ABSTRACT:
A high frequency matrix transformer comprises a plurality of interdependent magnetic elements interwired as a transformer. The various component parts of the high frequency transformer are arranged and interwired to provide a transformer having very low leakage inductance and very good coupling from the primary to the secondary. The high frequency matrix transformer is particularly well adapted for transformers requiring high equivalent turns ratios, high frequency, high power, and high dielectric isolation. It can have a plurality of parallel secondaries, which can source current to parallel rectifier circuits with current sharing. It can also have a plurality of parallel primary circuits, which also will current share, to balance the load between source switching circuits, or to provide dual input voltage capability (i.e., 120/240 volts). The high frequency matrix transformer tends to be spread out, and can be very flat, making it easy to ventilate or heat sink. The high frequency matrix transformer having push pull windings can include the primary switching device and secondary rectifying device within its windings, so that the transformer as a whole has direct current inputs and outputs.
REFERENCES:
patent: 3008107 (1958-09-01), Stearn
patent: 4665357 (1987-05-01), Herbert
patent: 4845606 (1989-07-01), Herbert
FMTT, Inc.
Ledynh Bot Lee
Picard Leo P.
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