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US 4,864,486 AGranted
Plank and frame transformer
AssigneeInternational Business Machines Corporation
InventorJames H. Spreen
Life of this patent
Estimating the term…
Abstract
A transformer structure includes two planar primary windings in a single plane with one primary winding on each leg of a core. The primary windings are connected in series or in parallel. The secondary structure includes a planar conductor structure about the core. A conductor passes through the core and makes electrical connection to the planar conductor through diode rectifiers. An anti-phase embodiment has dual primary circuits and dual cores with a combined secondary structure. Both plate-form and circuit card form embodiments are disclosed.
Claims12
A transformer comprising:
- a core having a window,
- two primary windings connected together and in a single plane with one primary winding on each leg of the core and with both primary windings encircling the same flux path, said path encircling said window,
- a second structure including at least three rectifiers and
- a generally planar secondary structure of two portions that are electrically connected by said at least three rectifiers, positioned to create induced current conductor paths which match the geometry of the primary windings, one of said portions constituting at least in part a generally planar conductor structure about the legs of the core, and the other of said portions constituting at least in part a conductor within said window.
1 more element
A transformer comprising:
- a core comprising two C-core elements having legs mated to form a continuous magnetic path surrounding a core window,
- a bar of conductive material extending through said window,
- a continuous frame of conductive material surrounding said core substantially in the plane of said bar,
- said bar being mounted on said frame but insulated therefrom,
- and diode means connecting said bar to said frame at opposite sides of said window.
2 more elements
Dependencies are inferred from the claim text.