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Patent US4092607A successfully refreshed from Google Patents.
US4092607A
Expired / Lapsed
US
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Magnetic amplifier having a co-axial winding
Assignee: General Electric Canada Co
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Filing: 1976-12-13
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Granted: 1978-05-30
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Expires: 1996-12-13
Abstract
Abstract A magnetic amplifier having a magnetic core in the shape of a hollow cylinder is provided with a gate winding comprising series-connected coaxial conductors passing through the center of the hollow core.
Inventors
- 👤 William Harold Robins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:14
CPC Classifications
H; H03; H03F; H03F9/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
A magnetic amplifier comprising: (a) a hollow cylindrical saturable core of magnetic material, (b) a gate winding linked to said core and comprising a plurality of co-axial conductors passing longitudinally through said core and insulated therefrom, said co-axial conductors being interconnected, externally of said core, in such a manner that said co-axial conductors form a series circuit such that the currents passing through said co-axial conductors flow in the same direction in all said co-axial conductors, (c) and a control winding linked to said core and adapted to be energized from a source of adjustable DC voltage that provides an adjustable magnetomotive force level bias in said core for controlling the firing angle of the core and thus the average current through said gate winding.
Claim 2
Dependent Claim
125 words
A magnetic amplifier comprising: (a) a hollow cylindrical saturable core of magnetic material, (b) a gate winding linked to said core and comprising a plurality of co-axial conductors passing longitudinally through said core and insulated therefrom, said co-axial conductors being interconnected, externally of said core, in such a manner that said co-axial conductors form a series circuit such that the currents passing through said co-axial conductors flow in the same direction in all said co-axial conductors, (c) and a control winding linked to said core and adapted to be energized from a source of adjustable DC voltage that provides an adjustable magnetomotive force level bias in said core for controlling the firing angle of the core and thus the average current through said gate winding.
Claim 3
Dependent Claim
108 words
The magnetic amplifier of claim 1 wherein said co-axial conductors comprise: a cylindrical shaped first conductor situated inside said core; the longitudinal axis of said first conductor coincident with the longitudinal axis of said core, and the ends of said first conductor protruding beyond the ends of said core; at least one hollow, cylindrical shaped second conductor positioned in a co-axial arrangement with said first conductor such that said first conductor is located inside said second conductor and spaced therefrom; the ends of said second conductor protrude beyond the ends of said core and the ends of said first conductor protrude beyond the ends of said second conductor.
Claim 4
Dependent Claim
23 words
The magnetic amplifier of claim 2 further including return conductors which interconnect the ends of said co-axial conductors to form said gate winding.
Claim 5
Dependent Claim
14 words
The magnetic amplifier of claim 3 wherein said gate winding comprises four co-axial conductors.
Claim 6
Dependent Claim
14 words
The magnetic amplifier of claim 2 wherein said gate winding comprises four co-axial conductors.
Claim 7
Dependent Claim
14 words
The magnetic amplifier of claim 1 wherein said gate winding comprises four co-axial conductors.
Claim 8
Dependent Claim
20 words
The magnetic amplifier of claim 1 in which said co-axial conductors are interconnected by return conductors externally of said core.
Claim 9
Dependent Claim
14 words
The magnetic amplifier of claim 7 wherein said gate winding has four co-axial conductors.
Claim 10
Dependent Claim
106 words
The magnetic amplifier of claim 7 wherein said co-axial conductors comprise: a solid cylindrical shaped conductor situated inside said core; the longitudinal axis of said solid conductor coincident with the longitudinal axis of said core, and the ends of said solid conductor protruding beyond the ends of said core; a plurality of hollow, cylindrical shaped conductors positioned in co-axial arrangement with said solid conductor such that said solid conductor is located inside said hollow conductors and spaced therefrom; the ends of said hollow conductors protrude beyond the ends of said core and the ends of said solid conductor protrude beyond the ends of said hollow conductors.
Claim 11
Dependent Claim
15 words
The magnetic amplifier of claim 9 wherein there are three said hollow, cylindrical shaped conductors.
References Cited (Backward Citations)
US2901713A
Cited
US3716806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |