Patent US3068668A successfully refreshed from Google Patents.
Patent US5093642A successfully refreshed from Google Patents.
US5093642A
Expired / Lapsed
US
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Solid state mutually coupled inductor
Assignee: Motorola Solutions Inc
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Filing: 1990-06-04
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Granted: 1992-03-03
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Expires: 2010-06-04
Abstract
Abstract An electrical circuit (200) comprises a first circuit (208) constructed and arranged to simulate an inductor and a second circuit (210) constructed and arranged to simulate an inductor. Coupled to these circuits is a third circuit (212) for simulating a mutual inductance therebetween.
Inventors
- 👤 James G. Mittel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:25
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/46; H03H11/48; H03H11/50; H03H11/486
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
An electrical circuit for emulating mutually coupled inductors comprising: a first circuit having a first input and a first output constructed and arranged to simulate a first inductor; a second circuit having a second input and a second output constructed and arranged to simulate a second inductor; and coupling means for simulating a mutual inductance between the first and second circuits, said coupling means coupled to the second circuit to sense the second output and derive therefrom a first signal for providing to the first input and coupled to the first circuit to sense the first output and derive therefrom a second signal for providing to the second input.
Claim 2
Dependent Claim
109 words
An electrical circuit for emulating mutually coupled inductors comprising: a first circuit having a first input and a first output constructed and arranged to simulate a first inductor; a second circuit having a second input and a second output constructed and arranged to simulate a second inductor; and coupling means for simulating a mutual inductance between the first and second circuits, said coupling means coupled to the second circuit to sense the second output and derive therefrom a first signal for providing to the first input and coupled to the first circuit to sense the first output and derive therefrom a second signal for providing to the second input.
Claim 3
Dependent Claim
22 words
An electrical circuit according to claim 1 wherein the first circuit comprises at least one transconductance amplifier for simulating the first inductor.
Claim 4
Dependent Claim
22 words
An electrical circuit according to claim 1 wherein the second circuit comprises at least one transconductance amplifier for simulating the second inductor.
Claim 5
Dependent Claim
23 words
An electrical circuit according to claim 1 wherein the transconductance of the first circuit is equal to the transconductance of the second circuit.
Claim 6
Dependent Claim
21 words
An electrical circuit according to claim 1 wherein a third circuit comprises the coupling means having at least two transconductance amplifiers.
Claim 7
Dependent Claim
28 words
An electrical circuit according to claim 5 wherein the ratio of the inductance of the first circuit and the inductance of the third circuit may be controlled dynamically.
Claim 8
Dependent Claim
28 words
An electrical circuit according to claim 5 wherein the ratio of the inductance of the second circuit and the inductance of the third circuit may be controlled dynamically.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |