US4730115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer system and direct current power supply
Assignee: LOGICAL Co Ltd NAKANO TOKYO
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Filing: 1986-02-12
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Granted: 1988-03-08
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Expires: 2006-02-12
Abstract
Abstract The present invention relates to a transformer system and a direct current power supply for obtaining a dc current including a luminous body disposed on the primary side for converting a electric power into a light and a solar cell unit disposed on the secondary side, opposing the luminous body, for receiving light emitted from the luminous body and for converting the light into electric power, thereby constituting a transformer which is further provided with an input control circuit and an output control circuit so as to configure a dc power supply. According to this apparatus, a stable dc current can be obtained without generating the magnetic field and noise problems of typical wound core transformers.
Inventors
- 👤 Kozo Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:34
CPC Classifications
H; H10; H10F; H10F55/00; H10F55/20; H10F55/25; H10F55/26; Y; Y10; Y10S; Y10S136/00; Y10S136/291; Y10S136/293
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
An electrical transformer system comprising: a plurality of transformers each comprising a primary and secondary and said transformers being connectable, selectively, in series, parallel, and series-parallel, with a primary of at least one of said transformers connectable to an input power supply and with a secondary of at least one of said transformers connectable to a load; each said secondary comprising a solar cell unit generative of a certain amount of electricity in response to a rated quantity of light received and according to a particular rating for said solar cell unit; each said primary comprising a light emitting device situated to provide at least said rated quantity of light to said solar cell unit upon energization by said input power supply; and said light emitting device comprising a heat radiating means for dissipating heat therefrom.
Claim 2
Dependent Claim
136 words
An electrical transformer system comprising: a plurality of transformers each comprising a primary and secondary and said transformers being connectable, selectively, in series, parallel, and series-parallel, with a primary of at least one of said transformers connectable to an input power supply and with a secondary of at least one of said transformers connectable to a load; each said secondary comprising a solar cell unit generative of a certain amount of electricity in response to a rated quantity of light received and according to a particular rating for said solar cell unit; each said primary comprising a light emitting device situated to provide at least said rated quantity of light to said solar cell unit upon energization by said input power supply; and said light emitting device comprising a heat radiating means for dissipating heat therefrom.
Claim 3
Dependent Claim
43 words
An electrical transformer system as in claim 1, and each said light emitting device further comprising: plural luminous elements electrically interconnected in a printed circuit, with terminals of said circuit connectable to said input power supply selectively in series, parallel, and series-parallel arrangements.
Claim 4
Dependent Claim
33 words
An electrical transformer system as in claim 2, and said heat radiating means comprising: a substrate for said printed circuit, said substrate consisting of a material sufficient to provide for said heat dissipating.
Claim 5
Dependent Claim
16 words
An electrical transformer system as in claim 3, and further comprising: said substrate material being flexible.
Claim 6
Dependent Claim
31 words
A transformer system according to claim 2 wherein a light emitting surface of said printed circuit comprises a reflective film coating and a rear surface thereof comprises a heat radiating coating.
Claim 7
Dependent Claim
36 words
An electrical transformer system as in claim 1, and further comprising: an optical fiber conducting light between said light emitting device and said solar cell unit; and electromagnetic shielding of at least said secondary and load.
Claim 8
Dependent Claim
52 words
A transformer system according to claim 1, and further comprising: an input control means disposed on an input side of the transformer system for protecting the light emitting device thereof; and an output control means disposed on an output side of the transformer system for adjusting and outputting a desired constant power.
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) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |