High frequency ferroresonant transformer

Claim 2

In a ferroresonant regulator circuit for high frequency application, input means over which input signals of a given operating range of voltages and frequencies are received, inductance means, saturable core means including a first magnetic core of a square-loop material having a first permeability region prior to saturation and a second substantially lower permeability region during saturation, and a second magnetic core having a permeability which is less than the value of the first permeability region of said first core and greater than the value of said second permeability region of said first core, whereby with saturation of the first core responsive to said input signals in said given operating range said second core will absorb the further mmf, input and output winding means wound on said saturable core means, the core areas, the number of turns of said winding means, and the material of said first and second magnetic cores being of a value to effect saturation of the first magnetic core and to prevent saturation of the second core as a result of the flux generated in response to said input signals, means connecting said input winding means in series with said inductance means to said input means, resonant capacitor means, means coupling said resonant capacitor means to said input winding means, and means coupling said output winding means to an associated load.

Claim 3

A ferroresonant regulator circuit as set forth in claim 1 in which the permeability of said first magnetic core is of a value to absorb substantially all of the flux until saturation, and the permeability of said seconD magnetic core is of a value to absorb substantially all of the further flux generated after said first magnetic core has saturated.

Claim 4

A ferroresonant regulator circuit as set forth in claim 1 in which said first magnetic core comprises a tape-wound core of a nickel-iron alloy.

Claim 5

A ferroresonant regulator circuit as set forth in claim 1 in which said second magnetic core comprises a sintered powdered core of soft ferrite material.

Claim 6

A ferroresonant regulator circuit set forth in claim 1 in which said first and second magnetic cores are toroid cores secured to one another with the center aperture thereof in aligned relation to provide a unitary core structure and in which said input and output windings are wound on said unitary core structure.

Claim 7

A ferroresonant regulator circuit as set forth in claim 1 in which said means for coupling said resonant capacitor to said input winding means comprises a further winding wound on said saturable core means.

Claim 8

A ferroresonant regulator circuit as set forth in claim 1 in which said first magnetic core comprises a laminated section of a square loop material and said second magnetic core comprises a pressed granular section of a ferrite material.

Claim 9

A ferroresonant regulator circuit as set forth in claim 7 in which said first and second magnetic cores have an upper leg, a lower leg, two outer legs and a center leg, and in which said input and output windings are wound on said center leg.

Claim 10

A ferroresonant regulator circuit as set forth in claim 1 in which said output winding comprises a center-tapped winding, and said means for coupling said output winding means to an associated load includes rectifier means for connecting the ends of said output winding to one side of said load, and means for connecting said center tap to the other side of said load.

Claim 11

In a high frequency ferroresonant regulator circuit for high frequency application, input means over which input signals of a given operating range of voltages and frequencies are received, inductance means, saturable core means including a magnetic core of a square-loop material having a first permeability region prior to saturation and a second lower permeability during saturation, a first and a second winding wound on said first core and a second magnetic core having a relatively uniform permeability which is less than the value of the first permeability region of said first core and greater than the value of said second permeability region of said first core, whereby with saturation of the first core responsive to the input signals in said given operating range said second core will absorb the further mmf, a third and fourth winding wound on said second core, means connecting said first and third windings on said first and second cores to said input means in series with said inductance means, the areas, the number of turns of said winding means, and the material of said first and second magnetic cores being of a value to effect saturation of the first magnetic core and to prevent saturation of the second core as a result of the flux generated in response to said input signals, resonant capacitor means, means coupling said resonant capacitor means to said first and third windings, and means coupling said second and fourth windings to an associated load.

Claim 12

In a high frequency ferroresonant regulator circuit for high frequency application, input means over which input signals of a given operating range of voltages and frequencies are received, inductance means, saturable core means including a magnetic core of a square-loop material having a first permeability region prior to saturation and a second lower permeability during saturation, a first and a second winding wound on said first core and a second magnetic core having a relatively uniform permeability which is less than the value of the first permeability region of said first core and greater than the value of said second permeability region of said first core, whereby with saturation of the first core responsive to the input signals in said given operating range said second core will absorb the further mmf, a third and fourth winding wound on said second core, means connecting said first and third windings on said first and second cores to said input means in series with said inductance means, the areas, the number of turns of said winding means, and the material of said first and second magnetic cores being of a value to effect saturation of the first magnetic core and to prevent saturation of the second core as a result of the flux generated in response to said input signals, resonant capacitor means, means coupling said resonant capacitor means to said first and third windings, and means coupling said second and fourth windings to an associated load.

Claim 13

A regulator circuit as set forth in claim 10 in which said means coupling said second and fourth windings to an associated load comprises a rectifier full wave bridge circuit.

Claim 14

In a high frequency ferroresonant regulator circuit, input means over which input signals of a given operating range of voltages and frequencies are received, inductance means having a first and second winding, saturable core means including a first magnetic core of a square-loop material having a first permeability region prior to saturation and a second magnetic core having a relatively uniform permeability which is less than the value of the first permeability region of said first core and greater than the vaLue of said second permeability region of said first core, whereby with saturation of the first core responsive to the input signals in said given operating range said second core will absorb the further mmf, an input winding wound on said saturable core means, first and second output means wound on said saturable core means, the areas, the number of turns of said winding means, and the material of said first and second magnetic cores being of a value to effect saturation of the first magnetic core and to prevent saturation of the second core as a result of the flux generated in response to said input signals, means connecting the first winding of said inductance means and said input winding of said saturable core means to said input means, resonant capacitor means, means coupling said resonant capacitor to said input winding means on said saturable core means, and means coupling said first output winding means on said saturable core means to an associated load, and means connecting the second winding of said inductance means and the second output means of said saturable core means to provide an isolated output voltage proportional to the input voltage.

Claim 15

In a high frequency ferroresonant regulator circuit, input means over which input signals of a given operating range of voltages and frequencies are received, inductance means having a first and second winding, saturable core means including a first magnetic core of a square-loop material having a first permeability region prior to saturation and a second magnetic core having a relatively uniform permeability which is less than the value of the first permeability region of said first core and greater than the vaLue of said second permeability region of said first core, whereby with saturation of the first core responsive to the input signals in said given operating range said second core will absorb the further mmf, an input winding wound on said saturable core means, first and second output means wound on said saturable core means, the areas, the number of turns of said winding means, and the material of said first and second magnetic cores being of a value to effect saturation of the first magnetic core and to prevent saturation of the second core as a result of the flux generated in response to said input signals, means connecting the first winding of said inductance means and said input winding of said saturable core means to said input means, resonant capacitor means, means coupling said resonant capacitor to said input winding means on said saturable core means, and means coupling said first output winding means on said saturable core means to an associated load, and means connecting the second winding of said inductance means and the second output means of said saturable core means to provide an isolated output voltage proportional to the input voltage.

Claim 16

A unitary saturable core for a ferroresonant transformer circuit comprising a first magnetic core section of a square-loop high currie temperature magnetic material having a first permeability region prior to saturation and a second substantially lower permeability region during saturation, and a second section of a magnetic material secured to said first section having a permeability which is of a substantially lower value than the values of the first permeability region of said first core and greater than the values of the second permeability region of said first core.

Claim 17

A unitary saturable core for a ferroresonant transformer circuit comprising a first magnetic core section of a square-loop high currie temperature magnetic material having a first permeability region prior to saturation and a second substantially lower permeability region during saturation, and a second section of a magnetic material secured to said first section having a permeability which is of a substantially lower value than the values of the first permeability region of said first core and greater than the values of the second permeability region of said first core.

Claim 18

A saturable core as set forth in claim 13 in which said first magnetic core section comprises a toroid-shaped, tape-wound core of nickel-iron alloy.

Claim 19

A saturable core as set forth in claim 13 in which said second magnetic core section comprises a toroid-shaped powdered core of a soft ferrite material.

Claim 20

A saturable core as set forth in claim 13 in which said first and second magnetic core sections are toroidal in form, and which includes input and output windings wound thereon.

Claim 21

A saturable core as set forth in claim 13 in which said first magnetic core section comprises a plurality of laminations of square loop material, and said second magnetic core section comprises a section of pressed granular material in contacting relation therewith.

Claim 22

A saturable core as set forth in claim 17 in which said first and second magnetic core sections have an upper and lower leg, two outer legs and a center leg, and which have input and output windings wound on said center leg.

Claim 23

A saturable core as set forth in claim 18 in which said first and said second magnetic core sections comprise a plurality of E, I laminations of square loop material joined to provide a rectangular shaped unitary structure with a center leg and two windows, and in which the E, I laminations of the second magnetic core section are assembled with predetermined air gaps between the adjacent portions of the E, I laminations, the distance of the air gap being adjusted to provide the desired permeability of the second core.