Inductor devices – Core surrounding linear conductor
Reexamination Certificate
2006-10-10
2006-10-10
Mai, Anh (Department: 2832)
Inductor devices
Core surrounding linear conductor
C363S024000
Reexamination Certificate
active
07119648
ABSTRACT:
A coaxial push pull transformer is an improved matrix transformer. A number of magnetic cores each contain a pre-wired secondary circuit. The secondary windings are tubular and extend through the core, and the ends of the tubular secondary windings are terminated to make connections to a secondary circuit, such as rectifiers. The cores are placed end to end with the tubular secondary windings aligned and the primary winding is then threaded through all of the cores, so that it is coaxial with the secondary windings when installed, for very low leakage inductance. In the design of the coaxial push pull transformer, care is taken to arrange the terminations of the transformer such that each termination is paired with another termination having a counter-flowing current, to cancel part of the field caused by the flowing currents so as to reduce the overall inductance of the terminals and interconnections. To keep the interconnections to the associated circuitry as short as possible, the associated circuitry may be on circuit boards sandwiched between the transformer cores and directly connected to its terminations.
REFERENCES:
patent: 5093646 (1992-03-01), Herbert
patent: 6137392 (2000-10-01), Herbert
patent: 6529389 (2003-03-01), Perlick et al.
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