Patent DE9146C successfully refreshed from Google Patents.
US4384259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical power supplies
Assignee: Data Beta Ltd
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Filing: 1981-02-25
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Granted: 1983-05-17
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Expires: 2001-02-25
Abstract
Abstract A power supply suitable for energizing an isolation amplifier requiring its input section to be isolated electrically from its output section. The power supply consists of a primary circuit, which, when energized by an electrical supply, converts the electrical energy to infrared radiation, and a secondary circuit which includes a solar cell or cells arranged to receive the infrared radiation. Electrical energy is generated by the solar cell or cells when irradiated. The primary circuit of the power supply includes a plurality of infrared emitting diodes which are energized electrically to provide infrared radiation. The current produced by the solar cell or cells in response to the radiation is applied to a regulating circuit.
Inventors
- 👤 Maurice J. Capewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:53
CPC Classifications
H; H02; H02M; H02M3/00; H02M11/00; Y; Y10; Y10S; Y10S136/00; Y10S136/291; Y10S136/293; Y10S323/00; Y10S323/902
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
An amplifier arrangement including an isolated amplifier having an input section and an output section, an isolated power supply having a primary circuit and a secondary circuit, the secondary circuit of the power supply including a solar cell arranged, when irradiated, to supply direct current to the input section of the isolated amplifier, and the primary circuit of the power supply including a photo-emissive device arranged, when energized, to irradiate the solar cell, the input and output sections of the amplifier being physically separate from each other and the primary and secondary circuits of the power supply being physically separated from each other to permit an isolating member to be interposed between the input and output sections of the amplifier and between the primary and secondary circuits of the power supply.
Claim 2
Dependent Claim
131 words
An amplifier arrangement including an isolated amplifier having an input section and an output section, an isolated power supply having a primary circuit and a secondary circuit, the secondary circuit of the power supply including a solar cell arranged, when irradiated, to supply direct current to the input section of the isolated amplifier, and the primary circuit of the power supply including a photo-emissive device arranged, when energized, to irradiate the solar cell, the input and output sections of the amplifier being physically separate from each other and the primary and secondary circuits of the power supply being physically separated from each other to permit an isolating member to be interposed between the input and output sections of the amplifier and between the primary and secondary circuits of the power supply.
Claim 3
Dependent Claim
30 words
An amplifying circuit as claimed in claim 1, wherein the input section of the amplifier is coupled to its output section by means of a photo-emissive diode and photo-transistor combination.
Claim 4
Dependent Claim
27 words
An amplifying circuit as claimed in claim 2, which includes an optical pipe located in the transmission path between the input and output sections of the amplifier.
Claim 5
Dependent Claim
30 words
An amplifying circuit as claimed in claim 3, wherein the input section of the amplifier is a voltage-controlled oscillator and the output section is a phase locked loop phase-frequency detector.
Claim 6
Dependent Claim
34 words
An amplifying circuit as claimed in claim 1, wherein the input section of the amplifier includes a UHF frequency modulated oscillator and the output section of the amplifier includes a UHF frequency modulation demodulator.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-16 | 1986-11-15 | 1987-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-16 | 1990-11-15 | 1991-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-16 | 1994-11-15 | 1995-05-17 | $7700.00 | Window Closed / Lapsed |