US4217633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar cell system having alternating current output
Assignee: National Aeronautics and Space Administration
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Filing: 1979-08-10
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Granted: 1980-08-12
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Expires: 1999-08-10
Abstract
Abstract A monolithie multijunction solar cell is modified by fabricating an integrated circuit inverter on the back of the cell to produce a device capable of generating an alternating current output. In another embodiment, integrated circuit power conditioning electronics is incorporated in a module containing a solar cell power supply.
Inventors
- 👤 John C. Evans, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:40
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135; H02M3/06; H02M3/07; H02S; H02S40/00; H02S40/30; H02S40/32; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y10; Y10S; Y10S136/00; Y10S136/291
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
65 words
A solar cell system having an alternating current output comprising a monolithic solar cell comprising a semiconductor body having a plurality of voltage generating regions connected in series to provide a direct current potential, and integrated circuit means incorporated in said semiconductor body along an edge thereof and including a plurality of rectifiers and transistors for changing the direct current power to alternating current power.
Claim 2
Dependent Claim
65 words
A solar cell system having an alternating current output comprising a monolithic solar cell comprising a semiconductor body having a plurality of voltage generating regions connected in series to provide a direct current potential, and integrated circuit means incorporated in said semiconductor body along an edge thereof and including a plurality of rectifiers and transistors for changing the direct current power to alternating current power.
Claim 3
Dependent Claim
28 words
The solar cell system recited in claim 1 including a heat sink; and wherein the solar cell and the integrated circuit means are mounted on the heat sink.
Claim 4
Dependent Claim
17 words
The solar cell system recited in claim 1 wherein the integrated circuit means comprises a SCR inverter.
Claim 5
Dependent Claim
33 words
The solar cell system recited in claim 1 wherein the integrated circuit means includes a first inverter; a voltage multiplier connected to the inverter; and a second inverter connected to the voltage multiplier.
Claim 6
Dependent Claim
16 words
The solar cell system recited in claim 4 wherein the voltage multiplier is a Cockcroft-Walton circuit.
References Cited (Backward Citations)
SU451160A1
Cited
US4080221A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |