Current-sharing transformer and power supply circuit having...

Details Current-sharing transformer and power supply circuit having... Current-sharing transformer and power supply circuit having...

2009-06-24

2011-12-20

Le, Don (Department: 2819)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S294000

Reexamination Certificate

active

08080947

ABSTRACT:
A current-sharing transformer includes a magnetic core assembly, a primary winding coil and multiple secondary winding coils. The magnetic core assembly includes a main magnetic post and multiple minor magnetic posts. The primary winding coil is wound around the main magnetic post. The secondary winding coils wound around respective minor magnetic posts. The secondary winding coils are connected to respective DC loads through respective rectifier circuits. The magnetic paths between respective minor magnetic posts and the main magnetic post are equal, so that the magnitudes of currents passing through the DC loads are balanced by the current-sharing transformer.

REFERENCES:
patent: 7075244 (2006-07-01), Kang et al.
patent: 7196483 (2007-03-01), Wey et al.
patent: 7525258 (2009-04-01), Kim et al.
patent: 7893629 (2011-02-01), Yang et al.
patent: 7948736 (2011-05-01), Liu et al.
patent: 2007/0152606 (2007-07-01), Wey et al.

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