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US4562523A
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Power supply
Assignee: Alcatel Lucent NV
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Filing: 1984-01-31
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Granted: 1985-12-31
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Expires: 2004-01-31
Abstract
Abstract In a power supply consisting of parallel-connected converters, each of the converters includes a current sensor. One terminal of each current sensor is connected to one terminal of each of the other current sensors. The other terminal is connected to the converter's pulse-width modulator through a limiter. If any of the converters fails, the limiter ensures that only a small, limited change occurs in the output voltages of the other converters which is permissible in most cases.
Inventors
- 👤 Gerhard Rodel
- 👤 Werner Wolfel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:31
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/33538; H02M3/33546
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
91 words
Power supply consisting of at least two parallel switching-supply modules each containing a current sensor having a first terminal which is connected by a connection to an error amplifier forming part of an output-voltage-regulating circuit acting on a pulse-width modulator, and a second terminal which is connected to the corresponding second terminal of the current sensor of the respective other of the at least two switching-supply modules, characterized in that the connection of the second terminal to the error amplifier (4) incorporates a limiter (D 1 , D 2 ; 5).
Claim 2
Dependent Claim
91 words
Power supply consisting of at least two parallel switching-supply modules each containing a current sensor having a first terminal which is connected by a connection to an error amplifier forming part of an output-voltage-regulating circuit acting on a pulse-width modulator, and a second terminal which is connected to the corresponding second terminal of the current sensor of the respective other of the at least two switching-supply modules, characterized in that the connection of the second terminal to the error amplifier (4) incorporates a limiter (D 1 , D 2 ; 5).
Claim 3
Dependent Claim
23 words
A power supply as claimed in claim 1, characterized in that the limiter consists of two diodes (D1, D2) connected in inverse parallel.
Claim 4
Dependent Claim
23 words
A power supply as claimed in claim 1, characterized in that the limiter includes an operational amplifier (5) connected as a proportional controller.
Claim 5
Dependent Claim
32 words
A power supply as claimed in claim 3, characterized in that the operational amplifier is connected to a positive supply voltage (+U B ) and a negative supply voltage (-U B ).
References Cited (Backward Citations)
US4177389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |