Patent US5124629A successfully refreshed from Google Patents.
US5124629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Post regulation circuit with energy storage
Assignee: UNITED OF STATES OF AMERICA AS REPRESENTED BY DEPARTMENT OF ENERGY
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Filing: 1991-04-23
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Granted: 1992-06-23
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Expires: 2011-04-23
Abstract
Abstract A charge regulation circuit provides regulation of an unregulated voltage supply and provides energy storage. The charge regulation circuit according to the present invention provides energy storage without unnecessary dissipation of energy through a resistor as in prior art approaches.
Inventors
- 👤 Don G. Ball
- 👤 Daniel L. Birx
- 👤 Edward G. Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:02
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/125; H02M3/135; H02M3/137; H02M3/142
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
165 words
A charge regulation circuit including: an unregulated power supply, a first inductor connected to said power supply, a capacitor, a first switch connected in a normally open position between said first inductor and said capacitor, means for closing said first switch so as to cause said capacitor to be charged through said first inductor to a voltage approximately twice the voltage of said power supply, a second inductor connected to said power supply, a second switch connected in a normally open position between said capacitor and said second inductor, means for closing said second switch so as to cause a discharge of the voltage stored on said capacitor into said power supply through said second inductor, means for opening said second switch when said capacitor is sufficiently discharged, and a diode connected between said second inductor and said power supply to provide protection against high voltage transients in said second switch and to provide a complete current path when said second switch is turned off.
Claim 2
Dependent Claim
165 words
A charge regulation circuit including: an unregulated power supply, a first inductor connected to said power supply, a capacitor, a first switch connected in a normally open position between said first inductor and said capacitor, means for closing said first switch so as to cause said capacitor to be charged through said first inductor to a voltage approximately twice the voltage of said power supply, a second inductor connected to said power supply, a second switch connected in a normally open position between said capacitor and said second inductor, means for closing said second switch so as to cause a discharge of the voltage stored on said capacitor into said power supply through said second inductor, means for opening said second switch when said capacitor is sufficiently discharged, and a diode connected between said second inductor and said power supply to provide protection against high voltage transients in said second switch and to provide a complete current path when said second switch is turned off.
Claim 3
Dependent Claim
24 words
A circuit as in claim 1 wherein said second inductor has a much higher value than said first inductor to provide improved voltage regulation.
Claim 4
Dependent Claim
14 words
A circuit as in claim 2 wherein said first switch is an SCR switch.
Claim 5
Dependent Claim
16 words
A circuit as in claim 3 wherein said second switch is a gate turn off thyristor.
Claim 6
Dependent Claim
14 words
A circuit as in claim 3 wherein said second switch is a field-effect transistor.
Claim 7
Dependent Claim
154 words
A charge regulation circuit comprising an unregulated power supply, a first inductor connected to said power supply, a capacitor, a first switch connected in normally open position between said first inductor and said capacitor, means for closing said first switch so as to cause said capacitor to be charged through said first inductor to a voltage approximately twice the voltage of said power supply, a second inductor connected to said power supply wherein said second inductor has a much higher value than said first inductor to provide improved voltage regulation, a second switch connected in a normally open position between said capacitor and said second inductor, means for closing said second switch when said capacitor is sufficiently discharged, a diode connected between said second inductor and said power supply to provide protection against high voltage transients in said second switch and to provide a complete current path when said second switch is turned off.
Claim 8
Dependent Claim
154 words
A charge regulation circuit comprising an unregulated power supply, a first inductor connected to said power supply, a capacitor, a first switch connected in normally open position between said first inductor and said capacitor, means for closing said first switch so as to cause said capacitor to be charged through said first inductor to a voltage approximately twice the voltage of said power supply, a second inductor connected to said power supply wherein said second inductor has a much higher value than said first inductor to provide improved voltage regulation, a second switch connected in a normally open position between said capacitor and said second inductor, means for closing said second switch when said capacitor is sufficiently discharged, a diode connected between said second inductor and said power supply to provide protection against high voltage transients in said second switch and to provide a complete current path when said second switch is turned off.
Claim 9
Dependent Claim
14 words
A circuit as in claim 6 wherein said first switch is an SCR switch.
Claim 10
Dependent Claim
15 words
A circuit as in claim 7 wherein said second switch is a gate turnoff thyristor.
Claim 11
Dependent Claim
14 words
A circuit as in claim 7 wherein said second switch is a field-effect transistor.
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) | 1995-06-23 | 1995-12-23 | 1996-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-23 | 1999-12-23 | 2000-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-23 | 2003-12-23 | 2004-06-23 | $7700.00 | Window Closed / Lapsed |