Regulating and filtering transformer having a magnetic core constructed to facilitate adjustment of non-magnetic gaps therein

Claim 2

A parametric regulating and filtering transformer, comprising: a magnetic core having first, second and third separable sections, input and output windings disposed in inductive relation with said first and third sections, respectively, said first section being butted against the second section to provide at least two spaced joints therewith and at least one magnetic loop, said third section being disposed adjacent to, but spaced from, said second section to provide at least one magnetic loop with the second section having two gaps therein, and at least one magnetic loop with the first section having two gaps therein, spacer means disposed in the gaps between the second and third sections, to maintain predetermined gap dimensions, means holding the first, second and third sections of the magnetic core in assembled relation, and a capacitor connected to the output winding to provide a tank circuit.

Claim 3

The transformer of claim 1 wherein the gaps formed between the second and third sections are in a common plane.

Claim 4

The transformer of claim 1 wherein the first and third sections include the input and output leg of the magnetic core, and the second section includes the saturating leg.

Claim 5

The transformer of claim 3 wherein the joints between the first and second sections lie in a common plane which is parallel with the axis of the input leg, and the gaps between the second and third sections are in a common plane parallel with the axis of the output leg.

Claim 6

The transformer of claim 3 wherein the second section also includes substantially all of the yoke portions of the magnetic core which interconnect the ends of the input, output and saturating legs.

Claim 7

The transformer of claim 1 wherein the magnetic core includes a plurality of nested turns of magnetic, metallic laminations.

Claim 8

The transformer of claim 3 wherein the second section is substantially rectangular in cross-sectional configuration, with the first and third sections including yoke portions which interconnect the ends of the input, output and saturating leg portions of the magnetic core.

Claim 9

The transformer of claim 7 wherein the magnetic core includes a plurality of nested turns of magnetic, metallic laminations.

Claim 10

The transformer of claim 7 wherein the magnetic core includes a plurality of flat, superposed layers of metallic, magnetic laminations.

Claim 11

The transformer of claim 1 wherein the first section is substantially E-shaped, having an intermediate leg portion and two outer portions, forming three spaced joints and two magnetic loops with the second section, with the input winding being disposed about the intermediate leg portion, and the third section is substantially E-shaped having an intermediate portion and two outer leg portions, forming two loops with the second section, each having two gaps therein, with the output winding being disposed on the intermediate leg portion of the third section.

Claim 12

The transformer of claim 10 wherein the intermediate leg portions of the first and third sections have the same width dimension as their outer leg portions.

Claim 13

The transformer of claim 10 wherein the intermediate leg portions of the first and third sections have twice the width dimension as their outer leg portions.

Claim 14

The transformer of claim 10 wherein the magnetic core includes a plurality of nested lamination turns formed of magnetic, metallic strip material.

Claim 15

The transformer of claim 10 wherein the magnetic core includes a plurality of flat, superposed layers of metallic laminations.

Claim 16

The transformer of claim 10 wherein the E-shaped first and third sections each include two substantially C-shaped loops disposed side-by-side, with their intermediate leg portions being formed of adjacent portions of the two C-shaped loops.

Claim 17

The transformer of claim 10 wherein the second section has a substantially rectangular cross-sectional configuration, and includes a plurality of flat, superposed magnetic metallic laminations.

Claim 18

A parametric regulating and filtering transformer, comprising: a magnetic core having a plurality of superposed layers of laminations which define first, second and third parallel leg portions and connecting yoke portions, each of said layers including a substantially E-shaped lamination having first and second outer leg portions and an intermediate leg portion, with the second outer leg portion having a shorter longitudinal dimension than the first outer leg portion, and a substantially L-shaped lamination having first and second portions, with the first and intermediate leg portions of the E-lamination butting against the first portion of the L-lamination, and with the ends of the second portion of the L-lamination and the second outer leg portion of the E-lamination being aligned but spaced apart by a predetermined dimension to provide a predetermined gap, with the midpoint of the gap falling on the central axis of the layer which is perpendicular to the first outer and intermediate leg portion of the E-shaped lamination, alternate layers of said magnetic core having their E- and L-laminations similarly oriented, with the remaining layers being in 180* rotational symmetry with said alternate layers about the central axis of the alternate layers, to align the gaps in the layers and provide a gap in the third leg of the magnetic core, input and output windings disposed in inductive relation with the first and third leg portions, respectively, of said magnetic core, and a capacitor connected to said output winding to provide a tank circuit.

Claim 19

A parametric regulating and filtering transformer, comprising: a magnetic core having a plurality of superposed layers of laminations which define first, second and third parallel leg portions and connecting yoke portions, each of said layers including a substantially E-shaped lamination having first and second outer leg portions and an intermediate leg portion, with the second outer leg portion having a shorter longitudinal dimension than the first outer leg portion, and a substantially L-shaped lamination having first and second portions, with the first and intermediate leg portions of the E-lamination butting against the first portion of the L-lamination, and with the ends of the second portion of the L-lamination and the second outer leg portion of the E-lamination being aligned but spaced apart by a predetermined dimension to provide a predetermined gap, with the midpoint of the gap falling on the central axis of the layer which is perpendicular to the first outer and intermediate leg portion of the E-shaped lamination, alternate layers of said magnetic core having their E- and L-laminations similarly oriented, with the remaining layers being in 180* rotational symmetry with said alternate layers about the central axis of the alternate layers, to align the gaps in the layers and provide a gap in the third leg of the magnetic core, input and output windings disposed in inductive relation with the first and third leg portions, respectively, of said magnetic core, and a capacitor connected to said output winding to provide a tank circuit.