Patent US4408268A successfully refreshed from Google Patents.
US4408268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse modulated electronic voltage controller with smooth voltage output
Assignee: General Electric Co
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Filing: 1982-08-09
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Granted: 1983-10-04
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Expires: 2002-08-09
Abstract
Abstract Four switching elements are configured to reduce the voltage of either an alternating or a direct current electrical power source. The present circuit effectively operates like a variable autotransformer when used with a.c. input power. Additionally, when employed with a conventional resistive load, the present invention exhibits a power factor near unity.
Inventors
- 👤 Philip H. Peters
- 👤 Abdallah M. Itani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:45
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5387; H02M7/53871
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
293 words
A power conditioning circuit for coupling an alternating or direct current, two-wire, electrical power source to a load, said circuit comprising: a common bus connected to a first side of said power source and to a first side of said load; a power bus connected to the second side of said power source; first inductive means having a first side connected to the second side of said load; first circuit switching means connected between the second side of said first inductive means and said power bus, said first circuit switching means operating to repeatedly disconnect said first inductive means from said power bus, whenever said power source exhibits a first voltage polarity with respect to said power bus; second circuit switching means connected between the second side of said first inductive means and said common bus, said second circuit switching means operating to connect said first inductive means in parallel with said load whenever said first conductive switching means operates to disconnect said first inductive means from said power bus; second inductive means having a first side connected to the second side of said load; third circuit switching means connected between the second side of said second inductive means and said power bus, said third circuit switching means operating to repeatedly disconnect said second inductive means from said circuit power bus whenever said power source exhibits a voltage polarity opposite said first voltage polarity, with respect to said power bus; and fourth circuit switching means connected between the second side of said second inductive means and said common bus, said fourth circuit switching means operating to connect said second inductive means in parallel with said load whenever said third circuit switching means operates to disconnect said second inductive means from said power bus.
Claim 2
Dependent Claim
293 words
A power conditioning circuit for coupling an alternating or direct current, two-wire, electrical power source to a load, said circuit comprising: a common bus connected to a first side of said power source and to a first side of said load; a power bus connected to the second side of said power source; first inductive means having a first side connected to the second side of said load; first circuit switching means connected between the second side of said first inductive means and said power bus, said first circuit switching means operating to repeatedly disconnect said first inductive means from said power bus, whenever said power source exhibits a first voltage polarity with respect to said power bus; second circuit switching means connected between the second side of said first inductive means and said common bus, said second circuit switching means operating to connect said first inductive means in parallel with said load whenever said first conductive switching means operates to disconnect said first inductive means from said power bus; second inductive means having a first side connected to the second side of said load; third circuit switching means connected between the second side of said second inductive means and said power bus, said third circuit switching means operating to repeatedly disconnect said second inductive means from said circuit power bus whenever said power source exhibits a voltage polarity opposite said first voltage polarity, with respect to said power bus; and fourth circuit switching means connected between the second side of said second inductive means and said common bus, said fourth circuit switching means operating to connect said second inductive means in parallel with said load whenever said third circuit switching means operates to disconnect said second inductive means from said power bus.
Claim 3
Dependent Claim
19 words
The power conditioning circuit of claim 1 further including a first capacitive means connected in parallel with said load.
Claim 4
Dependent Claim
22 words
The power conditioning circuit of claim 1 further including a second capacitive means connected between said power bus and said common bus.
Claim 5
Dependent Claim
26 words
The power conditioning circuit of claim 1 in which said repeated disconnections occur at a frequency greater than the frequency of said alternating current power source.
Claim 6
Dependent Claim
15 words
The power conditioning circuit of claim 1 further incuding means for grounding said power bus.
References Cited (Backward Citations)
US3708742A
Cited
US4337423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |